For me when I created a file and saved it as python file, I was getting this error during importing. I had to create a filename with the type ".py" , like filename.py and then save it as a python file. post trying to import the file worked for me.

I faced this problem and this is how I solved it.

1) Delete all the migration records from your app's migration directory. These are files named 0001_,0002_,0003_ etc. Be careful as to not delete the _init__.py file.

2) Delete the db.sqlite3 file. It will be regenerated later.

Now, run the following commands:

python manage.py makemigrations appname
python manage.py migrate

Be sure to write the name of your app after makemigrations. You might have to create a superuser to access your database again. Do so by the following

python manage.py createsuperuser

For me, none of the offered solutions worked. It turns out that I was using different settings for migration (manage.py) and running (wsgi.py). Settings defined in manage.py used a local database however a production database was used in wsgi.py settings. Thus a production database was never migrated. Using:

django-admin migrate

for migration proved to be better as you have to specify the settings used as here.

• Make sure that when migrating you always use the same database as when running!

If anyone finds that any of the suggested:

python manage.py makemigrations

python manage.py migrate

python manage.py migrate --run-syncdb

fail, you may need to add a folder named "migrations" inside the app directory, and create an empty __init__.py file.

This is called type methods, and are called with dot syntax, like instance methods. However, you call type methods on the type, not on an instance of that type. Here’s how you call a type method on a class called SomeClass:

What is the correct C# way of representing a data structure...

Remeber, "All models are wrong, but some are useful." -George E. P. Box

There is no a "correct way", only a useful one.

Choose one that is useful to you and/your users. That's it. Develop economically, don't over-engineer. The less code you write, the less code you will need to debug. (read the following editions).

-- Edited

My best answer would be... it depends. Inheriting from a List would expose the clients of this class to methods that may be should not be exposed, primarily because FootballTeam looks like a business entity.

-- Edition 2

I sincerely don't remember to what I was referring on the “don't over-engineer” comment. While I believe the KISS mindset is a good guide, I want to emphasize that inheriting a business class from List would create more problems than it resolves, due abstraction leakage.

On the other hand, I believe there are a limited number of cases where simply to inherit from List is useful. As I wrote in the previous edition, it depends. The answer to each case is heavily influenced by both knowledge, experience and personal preferences.

Thanks to @kai for helping me to think more precisely about the answer.

The right answer is

Decoupled the build-specific components of the Android SDK from the platform-tools component, so that the build tools can be updated independently of the integrated development environment (IDE) components.

link (expand Revision 17)

Your code already contains a beautiful way to execute all statements from a specified sql file

# Open and read the file as a single buffer
fd = open('ZooDatabase.sql', 'r')
sqlFile = fd.read()
fd.close()

# all SQL commands (split on ';')
sqlCommands = sqlFile.split(';')

# Execute every command from the input file
for command in sqlCommands:
    # This will skip and report errors
    # For example, if the tables do not yet exist, this will skip over
    # the DROP TABLE commands
    try:
        c.execute(command)
    except OperationalError, msg:
        print "Command skipped: ", msg

Wrap this in a function and you can reuse it.

def executeScriptsFromFile(filename):
    # Open and read the file as a single buffer
    fd = open(filename, 'r')
    sqlFile = fd.read()
    fd.close()

    # all SQL commands (split on ';')
    sqlCommands = sqlFile.split(';')

    # Execute every command from the input file
    for command in sqlCommands:
        # This will skip and report errors
        # For example, if the tables do not yet exist, this will skip over
        # the DROP TABLE commands
        try:
            c.execute(command)
        except OperationalError, msg:
            print "Command skipped: ", msg

To use it

executeScriptsFromFile('zookeeper.sql')

You said you were confused by

result = c.execute("SELECT * FROM %s;" % table);

In Python, you can add stuff to a string by using something called string formatting.

You have a string "Some string with %s" with %s, that's a placeholder for something else. To replace the placeholder, you add % ("what you want to replace it with") after your string

ex:

a = "Hi, my name is %s and I have a %s hat" % ("Azeirah", "cool")
print(a)
>>> Hi, my name is Azeirah and I have a Cool hat

Bit of a childish example, but it should be clear.

Now, what

result = c.execute("SELECT * FROM %s;" % table);

means, is it replaces %s with the value of the table variable.

(created in)

for table in ['ZooKeeper', 'Animal', 'Handles']:


# for loop example

for fruit in ["apple", "pear", "orange"]:
    print fruit
>>> apple
>>> pear
>>> orange

If you have any additional questions, poke me.

A blanket "no you shouldn't" is terrible advice. This is perfectly reasonable in many situations depending on your use case, workload, data entropy, hardware, etc.. What you shouldn't do is make assumptions.

It should be noted that you can specify a prefix which will limit MySQL's indexing, thereby giving you some help in narrowing down the results before scanning the rest. This may, however, become less useful over time as your prefix "fills up" and becomes less unique.

It's very simple to do, e.g.:

CREATE TABLE IF NOT EXISTS `foo` (
  `id` varchar(128),
  PRIMARY KEY (`id`(4))
)

Also note that the prefix (4) appears after the column quotes. Where the 4 means that it should use the first 4 characters of the 128 possible characters that can exist as the id.

Lastly, you should read how index prefixes work and their limitations before using them: https://dev.mysql.com/doc/refman/8.0/en/create-index.html

Configure your DB connection in the 'Manage DB Connections dialog. Select 'Standard (TCP/IP)' as connection method.

See this page for more details http://dev.mysql.com/doc/workbench/en/wb-manage-db-connections.html

According to this other page a socket file is used even if you specify localhost.

A Unix socket file is used if you do not specify a host name or if you specify the special host name localhost.

It also shows how to check on your server by running these commands:

If a mysqld process is running, you can check it by trying the following commands. The port number or Unix socket file name might be different in your setup. host_ip represents the IP address of the machine where the server is running.

shell> mysqladmin version 
shell> mysqladmin variables 
shell> mysqladmin -h `hostname` version variables 
shell> mysqladmin -h `hostname` --port=3306 version 
shell> mysqladmin -h host_ip version 
shell> mysqladmin --protocol=SOCKET --socket=/tmp/mysql.sock version

Manual Symlinks (and Windows Junctions)

Couldn't the examples directory contain a node_modules with a symbolic link to the root of the project project -> ../../ thus allowing the examples to use require('project'), although this doesn't remove the mapping, it does allow the source to use require('project') rather than require('../../').

I have tested this, and it does work with v0.6.18.

Listing of project directory:

$ ls -lR project
project:
drwxr-xr-x 3 user user 4096 2012-06-02 03:51 examples
-rw-r--r-- 1 user user   49 2012-06-02 03:51 index.js

project/examples:
drwxr-xr-x 2 user user 4096 2012-06-02 03:50 node_modules
-rw-r--r-- 1 user user   20 2012-06-02 03:51 test.js

project/examples/node_modules:
lrwxrwxrwx 1 user user 6 2012-06-02 03:50 project -> ../../

The contents of index.js assigns a value to a property of the exports object and invokes console.log with a message that states it was required. The contents of test.js is require('project').

Automated Symlinks

The problem with manually creating symlinks is that every time you npm ci, you lose the symlink. If you make the symlink process a dependency, viola, no problems.

The module basetag is a postinstall script that creates a symlink (or Windows junction) named $ every time npm install or npm ci is run:

npm install --save basetag

node_modules/$ -> ..

With that, you don't need any special modification to your code or require system. $ becomes the root from which you can require.

var foo = require('$/lib/foo.js');

If you don't like the use of $ and would prefer # or something else (except @, which is a special character for npm), you could fork it and make the change.

Note: Although Windows symlinks (to files) require admin permissions, Windows junctions (to directories) do not need Windows admin permissions. This is a safe, reliable, cross-platform solution.

I'm not quite sure what a "good way" of copying a file is, but assuming "good" means "fast", I could broaden the subject a little.

Current operating systems have long been optimized to deal with run of the mill file copy. No clever bit of code will beat that. It is possible that some variant of your copy techniques will prove faster in some test scenario, but they most likely would fare worse in other cases.

Typically, the sendfile function probably returns before the write has been committed, thus giving the impression of being faster than the rest. I haven't read the code, but it is most certainly because it allocates its own dedicated buffer, trading memory for time. And the reason why it won't work for files bigger than 2Gb.

As long as you're dealing with a small number of files, everything occurs inside various buffers (the C++ runtime's first if you use iostream, the OS internal ones, apparently a file-sized extra buffer in the case of sendfile). Actual storage media is only accessed once enough data has been moved around to be worth the trouble of spinning a hard disk.

I suppose you could slightly improve performances in specific cases. Off the top of my head:

• If you're copying a huge file on the same disk, using a buffer bigger than the OS's might improve things a bit (but we're probably talking about gigabytes here).
• If you want to copy the same file on two different physical destinations you will probably be faster opening the three files at once than calling two copy_file sequentially (though you'll hardly notice the difference as long as the file fits in the OS cache)
• If you're dealing with lots of tiny files on an HDD you might want to read them in batches to minimize seeking time (though the OS already caches directory entries to avoid seeking like crazy and tiny files will likely reduce disk bandwidth dramatically anyway).

But all that is outside the scope of a general purpose file copy function.

So in my arguably seasoned programmer's opinion, a C++ file copy should just use the C++17 file_copy dedicated function, unless more is known about the context where the file copy occurs and some clever strategies can be devised to outsmart the OS.

An old question, but I'll answer anyway. The answer to the actual question asked is that the bare return is redundant and should be left out.

Furthermore, the suggested value is false for the following reason:

if (ret<0) return;

Redefining a C reserved word as a macro is a bad idea on the face of it, but this particular suggestion is simply unsupportable, both as an argument and as code.

In my case the sqlite db file db.sqlite3 was stored in the DocumentRoot of apache. So, even after setting the following permissions it didn't work:

sudo chown www-data:www-data /path/to/db-folder
sudo chown www-data:www-data /path/to/db-folder/sqlite-db.db

Finally when i moved db.sqlite3 to a newly created folder dbfolder under DocumentRoot and gave the above permissions, and it worked.

Even if it's a late answer: I think this is still a very good question and IMHO Python (without additional libraries or toolkits like numpy) is still lacking a convenient method to access the indices of list elements according to a manually defined filter.

You could manually define a function, which provides that functionality:

def indices(list, filtr=lambda x: bool(x)):
    return [i for i,x in enumerate(list) if filtr(x)]

print(indices([1,0,3,5,1], lambda x: x==1))

Yields: [0, 4]

In my imagination the perfect way would be making a child class of list and adding the indices function as class method. In this way only the filter method would be needed:

class MyList(list):
    def __init__(self, *args):
        list.__init__(self, *args)
    def indices(self, filtr=lambda x: bool(x)):
        return [i for i,x in enumerate(self) if filtr(x)]

my_list = MyList([1,0,3,5,1])
my_list.indices(lambda x: x==1)

I elaborated a bit more on that topic here: http://tinyurl.com/jajrr87

In some cases, it's easily to deal with a null than an exception. In particular, the coalescing operator is handy:

SomeClass someObject = (obj as SomeClass) ?? new SomeClass();

It also simplifies code where you are (not using polymorphism, and) branching based on the type of an object:

ClassA a;
ClassB b;
if ((a = obj as ClassA) != null)
{
    // use a
}
else if ((b = obj as ClassB) != null)
{
    // use b
}

As specified on the MSDN page, the as operator is equivalent to:

expression is type ? (type)expression : (type)null

which avoids the exception completely in favour of a faster type test, but also limits its use to types that support null (reference types and Nullable<T>).

On my machine:

C:\Program Files\PostgreSQL\8.4\data\postgresql.conf

Just close (stop) and open (start) the database. This solved my problem.

I think the common approach is to SELECT * FROM INFORMATION_SCHEMA.TABLES for each database using sp_MSforeachdb

I created a snippet in VS Code that I think it might be helpful.

Query

IF OBJECT_ID('tempdb..#alltables', 'U') IS NOT NULL DROP TABLE #alltables;
SELECT * INTO #alltables FROM INFORMATION_SCHEMA.TABLES;
TRUNCATE TABLE #alltables;
EXEC sp_MSforeachdb 'USE [?];INSERT INTO #alltables SELECT * from INFORMATION_SCHEMA.TABLES';
SELECT * FROM #alltables WHERE TABLE_NAME LIKE '%<TABLE_NAME_TO_SEARCH>%';
GO 

Snippet

{
    "List all tables": {
        "prefix": "sqlListTable",
        "body": [
            "IF OBJECT_ID('tempdb..#alltables', 'U') IS NOT NULL DROP TABLE #alltables;",
            "SELECT * INTO #alltables FROM INFORMATION_SCHEMA.TABLES;",
            "TRUNCATE TABLE #alltables;",
            "EXEC sp_MSforeachdb 'USE [?];INSERT INTO #alltables SELECT * from INFORMATION_SCHEMA.TABLES';",
            "SELECT * FROM #alltables WHERE TABLE_NAME LIKE '%$0%';",
            "GO"
        ]
    }
}

In Linux you can do something similar, for example, if your locked file is development.db:

$ fuser development.db This command will show what process is locking the file:

development.db: 5430 Just kill the process...

kill -9 5430 ...And your database will be unlocked.

I'd agree it is interesting to propose a particular style of working. However, unless I have the chance to set the style, I usually follow what's been done for consistency.

Taking a look at the Linux Kernel Commits, the project that started git if you like, http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=bca476139d2ded86be146dae09b06e22548b67f3, they don't follow the 50/72 rule. The first line is 54 characters.

I would say consistency matters. Set up proper means of identifying users who've made commits (user.name, user.email - especially on internal networks. User@OFFICE-1-PC-10293982811111 isn't a useful contact address). Depending on the project, make the appropriate detail available in the commit. It's hard to say what that should be; it might be tasks completed in a development process, then details of what's changed.

I don't believe users should use git one way because certain interfaces to git treat the commits in certain ways.

I should also note there are other ways to find commits. For a start, git diff will tell you what's changed. You can also do things like git log --pretty=format:'%T %cN %ce' to format the options of git log.

There is a HUGE difference between VARCHAR and TEXT. While VARCHAR fields can be indexed, TEXT fields cannot. VARCHAR type fields are stored inline while TEXT are stored offline, only pointers to TEXT data is actually stored in the records.

If you have to index your field for faster search, update or delete than go for VARCHAR, no matter how big. A VARCHAR(10000000) will never be the same as a TEXT field bacause these two data types are different in nature.

• If you use you field only for archiving
• you don't care about data speed retrival
• you care about speed but you will use the operator '%LIKE%' in your search query so indexing will not help much
• you can't predict a limit of the data length

than go for TEXT.

I coudn't get any gain from transactions until I raised cache_size to a higher value i.e. PRAGMA cache_size=10000;

The most important rationale for avoiding ++ or -- is that the operators return values and cause side effects at the same time, making it harder to reason about the code.

For efficiency's sake, I prefer:

• ++i when not using the return value (no temporary)
• i++ when using the return value (no pipeline stall)

I am a fan of Mr. Crockford, but in this case I have to disagree. ++i is 25% less text to parse than i+=1 and arguably clearer.

Some packages like javax.swing were not included in java standard library at first. Sun company decided to consider them official and included them into the early versions of java as standard libraries or standard extensions.

By convention, all the standard extensions start with an X while they can get promoted to first-class over time like what happened for javax.swing.

In a question tagged 'bash' that explicitly has "in Bash" in the title, I'm a little surprised by all of the replies saying you should avoid [[...]] because it only works in bash!

It's true that portability is the primary objection: if you want to write a shell script which works in Bourne-compatible shells even if they aren't bash, you should avoid [[...]]. (And if you want to test your shell scripts in a more strictly POSIX shell, I recommend dash; though it is an incomplete POSIX implementation since it lacks the internationalization support required by the standard, it also lacks support for the many non-POSIX constructs found in bash, ksh, zsh, etc.)

The other objection I see is at least applicable within the assumption of bash: that [[...]] has its own special rules which you have to learn, while [...] acts like just another command. That is again true (and Mr. Santilli brought the receipts showing all the differences), but it's rather subjective whether the differences are good or bad. I personally find it freeing that the double-bracket construct lets me use (...) for grouping, && and || for Boolean logic, < and > for comparison, and unquoted parameter expansions. It's like its own little closed-off world where expressions work more like they do in traditional, non-command-shell programming languages.

A point I haven't seen raised is that this behavior of [[...]] is entirely consistent with that of the arithmetic expansion construct $((...)), which is specified by POSIX, and also allows unquoted parentheses and Boolean and inequality operators (which here perform numeric instead of lexical comparisons). Essentially, any time you see the doubled bracket characters you get the same quote-shielding effect.

(Bash and its modern relatives also use ((...)) – without the leading $ – as either a C-style for loop header or an environment for performing arithmetic operations; neither syntax is part of POSIX.)

So there are some good reasons to prefer [[...]]; there are also reasons to avoid it, which may or may not be applicable in your environment. As to your coworker, "our style guide says so" is a valid justification, as far as it goes, but I'd also seek out backstory from someone who understands why the style guide recommends what it does.

I prefer not to use a prefix on interfaces:

• The prefix hurts readability.

• Using interfaces in clients is the standard best way to program, so interfaces names should be as short and pleasant as possible. Implementing classes should be uglier to discourage their use.

• When changing from an abstract class to an interface a coding convention with prefix I implies renaming all the occurrences of the class --- not good!

An ambiguous case that breaks in the absence of a semicolon:

// define a function
var fn = function () {
    //...
} // semicolon missing at this line

// then execute some code inside a closure
(function () {
    //...
})();

This will be interpreted as:

var fn = function () {
    //...
}(function () {
    //...
})();

We end up passing the second function as an argument to the first function and then trying to call the result of the first function call as a function. The second function will fail with a "... is not a function" error at runtime.

Poking around online, it looks like it might be possible to do this with JNI. You'd then have to make a call to putenv() from C, and you'd (presumably) have to do it in a way that worked on both Windows and UNIX.

If all that can be done, it surely wouldn't be too hard for Java itself to support this instead of putting me in a straight jacket.

A Perl-speaking friend elsewhere suggests that this is because environment variables are process global and Java is striving for good isolation for good design.

You can not do it as a member function, because the implicit this parameter is the left hand side of the <<-operator. (Hence, you would need to add it as a member function to the ostream-class. Not good :)

Could you do it as a free function without friending it? That's what I prefer, because it makes it clear that this is an integration with ostream, and not a core functionality of your class.

When you use a TemplateField and bind literal text to it like you are doing, asp.net will actually insert a control FOR YOU! It gets put into a DataBoundLiteralControl. You can see this if you look in the debugger near your line of code that is getting the empty text.

So, to access the information without changing your template to use a control, you would cast like this:

string percentage = ((DataBoundLiteralControl)e.Row.Cells[7].Controls[0]).Text;

That will get you your text!

As you say, you don't need to request the file twice. Pass it from your controller to your directive. Assuming you use the directive inside the scope of the controller:

.controller('MyController', ['$scope', '$http', function($scope, $http) {
  $http.get('locations/locations.json').success(function(data) {
      $scope.locations = data;
  });
}

Then in your HTML (where you call upon the directive).
Note: locations is a reference to your controllers $scope.locations.

<div my-directive location-data="locations"></div>

And finally in your directive

...
scope: {
  locationData: '=locationData'
},
controller: ['$scope', function($scope){
  // And here you can access your data
  $scope.locationData
}]
...

This is just an outline to point you in the right direction, so it's incomplete and not tested.

here is the best practiced method to center a div as position absolute

DEMO FIDDLE

code --

#header {
background:black;
height:90px;
width:100%;
position:relative; // you forgot this, this is very important
}

#logo {
background:red;
height:50px;
position:absolute;
width:50px;
margin: auto; // margin auto works just you need to put top left bottom right as 0
top:0;
bottom:0;
left:0;
right:0;
}

The json.load() method (without "s" in "load") can read a file directly:

import json

with open('strings.json') as f:
    d = json.load(f)
    print(d)

You were using the json.loads() method, which is used for string arguments only.

Edit: The new message is a totally different problem. In that case, there is some invalid json in that file. For that, I would recommend running the file through a json validator.

There are also solutions for fixing json like for example How do I automatically fix an invalid JSON string?.

Ok well this might work for you, a function that takes a path and returns an array of file names in the folder. You could use an if statement to get just the excel files when looping through the array.

Function listfiles(ByVal sPath As String)

    Dim vaArray     As Variant
    Dim i           As Integer
    Dim oFile       As Object
    Dim oFSO        As Object
    Dim oFolder     As Object
    Dim oFiles      As Object

    Set oFSO = CreateObject("Scripting.FileSystemObject")
    Set oFolder = oFSO.GetFolder(sPath)
    Set oFiles = oFolder.Files

    If oFiles.Count = 0 Then Exit Function

    ReDim vaArray(1 To oFiles.Count)
    i = 1
    For Each oFile In oFiles
        vaArray(i) = oFile.Name
        i = i + 1
    Next

    listfiles = vaArray

End Function

It would be nice if we could just access the files in the files object by index number but that seems to be broken in VBA for whatever reason (bug?).

Using a regex

#include <regex>
#include <string>

string trim(string s) {
    regex e("^\\s+|\\s+$");   // remove leading and trailing spaces
    return regex_replace(s, e, "");
}

Credit to: https://www.regular-expressions.info/examples.html for the regex

You should work with padding on the inner container rather than with margin. Try this!

HTML

<div class="row info-panel">
    <div class="col-md-4" id="server_1">
       <div class="server-action-menu">
           Server 1
       </div>
   </div>
</div>

CSS

.server-action-menu {
    background-color: transparent;
    background-image: linear-gradient(to bottom, rgba(30, 87, 153, 0.2) 0%, rgba(125, 185, 232, 0) 100%);
    background-repeat: repeat;
    border-radius:10px;
    padding: 5px;
}

To attempt command line arguments directly is not possible.

One alternative might be environment variables (https://superuser.com/questions/728951/systemd-giving-my-service-multiple-arguments).

This is where I found the answer: http://www.freedesktop.org/software/systemd/man/systemctl.html

so sudo systemctl restart myprog -v -- systemctl will think you're trying to set one of its flags, not myprog's flag.

sudo systemctl restart myprog someotheroption -- systemctl will restart myprog and the someotheroption service, if it exists.

this is just as a side note, but generally what you want to do is keep size on the Session and ViewState small. I generally just store IDs and small amounts of packets in Session and ViewState.

for instance if you want to pass large chunks of data from one page to another, you can store an ID in the querystring and use that ID to either get data from a database or a file.

PS: but like I said, this might be totally unrelated to your query :)

This worked for me on my VM instance of Ubuntu.

hdfs dfs -copyToLocal [hadoop directory] [local directory]

Here is yet another answer. I was answering a similar question and saw link referenced to this question. I didnt see any answer similar to mine. So, I thought of writing it here.

  class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = UIColor.whiteColor()
        setupViews()
    }

    var constraints: [NSLayoutConstraint] = []

    func setupViews() {

        let container1 = createButtonContainer(withButtonTitle: "Button 1")
        let container2 = createButtonContainer(withButtonTitle: "Button 2")
        let container3 = createButtonContainer(withButtonTitle: "Button 3")
        let container4 = createButtonContainer(withButtonTitle: "Button 4")

        view.addSubview(container1)
        view.addSubview(container2)
        view.addSubview(container3)
        view.addSubview(container4)

        [

            // left right alignment
            container1.leftAnchor.constraintEqualToAnchor(view.leftAnchor, constant: 20),
            container1.rightAnchor.constraintEqualToAnchor(view.rightAnchor, constant: -20),
            container2.leftAnchor.constraintEqualToAnchor(container1.leftAnchor),
            container2.rightAnchor.constraintEqualToAnchor(container1.rightAnchor),
            container3.leftAnchor.constraintEqualToAnchor(container1.leftAnchor),
            container3.rightAnchor.constraintEqualToAnchor(container1.rightAnchor),
            container4.leftAnchor.constraintEqualToAnchor(container1.leftAnchor),
            container4.rightAnchor.constraintEqualToAnchor(container1.rightAnchor),


            // place containers one after another vertically
            container1.topAnchor.constraintEqualToAnchor(view.topAnchor),
            container2.topAnchor.constraintEqualToAnchor(container1.bottomAnchor),
            container3.topAnchor.constraintEqualToAnchor(container2.bottomAnchor),
            container4.topAnchor.constraintEqualToAnchor(container3.bottomAnchor),
            container4.bottomAnchor.constraintEqualToAnchor(view.bottomAnchor),


            // container height constraints
            container2.heightAnchor.constraintEqualToAnchor(container1.heightAnchor),
            container3.heightAnchor.constraintEqualToAnchor(container1.heightAnchor),
            container4.heightAnchor.constraintEqualToAnchor(container1.heightAnchor)
            ]
            .forEach { $0.active = true }
    }


    func createButtonContainer(withButtonTitle title: String) -> UIView {
        let view = UIView(frame: .zero)
        view.translatesAutoresizingMaskIntoConstraints = false

        let button = UIButton(type: .System)
        button.translatesAutoresizingMaskIntoConstraints = false
        button.setTitle(title, forState: .Normal)
        view.addSubview(button)

        [button.centerYAnchor.constraintEqualToAnchor(view.centerYAnchor),
            button.leftAnchor.constraintEqualToAnchor(view.leftAnchor),
            button.rightAnchor.constraintEqualToAnchor(view.rightAnchor)].forEach { $0.active = true }

        return view
    }
}

And again, this can be done quite easily with iOS9 UIStackViews as well.

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = UIColor.greenColor()
        setupViews()
    }

    var constraints: [NSLayoutConstraint] = []

    func setupViews() {

        let container1 = createButtonContainer(withButtonTitle: "Button 1")
        let container2 = createButtonContainer(withButtonTitle: "Button 2")
        let container3 = createButtonContainer(withButtonTitle: "Button 3")
        let container4 = createButtonContainer(withButtonTitle: "Button 4")

        let stackView = UIStackView(arrangedSubviews: [container1, container2, container3, container4])
        stackView.translatesAutoresizingMaskIntoConstraints = false
        stackView.axis = .Vertical
        stackView.distribution = .FillEqually
        view.addSubview(stackView)

        [stackView.topAnchor.constraintEqualToAnchor(view.topAnchor),
            stackView.bottomAnchor.constraintEqualToAnchor(view.bottomAnchor),
            stackView.leftAnchor.constraintEqualToAnchor(view.leftAnchor, constant: 20),
            stackView.rightAnchor.constraintEqualToAnchor(view.rightAnchor, constant: -20)].forEach { $0.active = true }
    }


    func createButtonContainer(withButtonTitle title: String) -> UIView {
        let button = UIButton(type: .Custom)
        button.translatesAutoresizingMaskIntoConstraints = false
        button.backgroundColor = UIColor.redColor()
        button.setTitleColor(UIColor.whiteColor(), forState: .Normal)
        button.setTitle(title, forState: .Normal)
        let buttonContainer = UIStackView(arrangedSubviews: [button])
        buttonContainer.distribution = .EqualCentering
        buttonContainer.alignment = .Center
        buttonContainer.translatesAutoresizingMaskIntoConstraints = false
        return buttonContainer
    }
}

Notice that it is exact same approach as above. It adds four container views which are filled equally and a view is added to each stack view which is aligned in center. But, this version of UIStackView reduces some code and looks nice.

The following code displays which JRadiobutton is selected from Buttongroup on click of a button.
It is done by looping through all JRadioButtons in a particular buttonGroup.

 JRadioButton firstRadioButton=new JRadioButton("Female",true);  
 JRadioButton secondRadioButton=new JRadioButton("Male");  

 //Create a radio button group using ButtonGroup  
 ButtonGroup btngroup=new ButtonGroup();  

 btngroup.add(firstRadioButton);  
 btngroup.add(secondRadioButton);  

 //Create a button with text ( What i select )  
 JButton button=new JButton("What i select");  

 //Add action listener to created button  
 button.addActionListener(this);  

 //Get selected JRadioButton from ButtonGroup  
  public void actionPerformed(ActionEvent event)  
  {  
     if(event.getSource()==button)  
     {  
        Enumeration<AbstractButton> allRadioButton=btngroup.getElements();  
        while(allRadioButton.hasMoreElements())  
        {  
           JRadioButton temp=(JRadioButton)allRadioButton.nextElement();  
           if(temp.isSelected())  
           {  
            JOptionPane.showMessageDialog(null,"You select : "+temp.getText());  
           }  
        }            
     }
  }

This works for me (Chrome 86):

function download(content, mimeType, filename){
  var a = document.createElement('a')
  var blob = new Blob([content], {type: mimeType})
  var url = URL.createObjectURL(blob)
  a.setAttribute('href', url)
  a.setAttribute('download', filename)
  a.click()
}

Here you can see a Fiddle: https://jsfiddle.net/Stelios2020/ukmf5304/6/

You can use xdpyinfo (can be installed via apt-get install x11-utils).

In general I use system, open, IPC::Open2, or IPC::Open3 depending on what I want to do. The qx// operator, while simple, is too constraining in its functionality to be very useful outside of quick hacks. I find open to much handier.

system: run a command and wait for it to return

Use system when you want to run a command, don't care about its output, and don't want the Perl script to do anything until the command finishes.

#doesn't spawn a shell, arguments are passed as they are
system("command", "arg1", "arg2", "arg3");

or

#spawns a shell, arguments are interpreted by the shell, use only if you
#want the shell to do globbing (e.g. *.txt) for you or you want to redirect
#output
system("command arg1 arg2 arg3");

qx// or ``: run a command and capture its STDOUT

Use qx// when you want to run a command, capture what it writes to STDOUT, and don't want the Perl script to do anything until the command finishes.

#arguments are always processed by the shell

#in list context it returns the output as a list of lines
my @lines = qx/command arg1 arg2 arg3/;

#in scalar context it returns the output as one string
my $output = qx/command arg1 arg2 arg3/;

exec: replace the current process with another process.

Use exec along with fork when you want to run a command, don't care about its output, and don't want to wait for it to return. system is really just

sub my_system {
    die "could not fork\n" unless defined(my $pid = fork);
    return waitpid $pid, 0 if $pid; #parent waits for child
    exec @_; #replace child with new process
}

You may also want to read the waitpid and perlipc manuals.

open: run a process and create a pipe to its STDIN or STDERR

Use open when you want to write data to a process's STDIN or read data from a process's STDOUT (but not both at the same time).

#read from a gzip file as if it were a normal file
open my $read_fh, "-|", "gzip", "-d", $filename
    or die "could not open $filename: $!";

#write to a gzip compressed file as if were a normal file
open my $write_fh, "|-", "gzip", $filename
    or die "could not open $filename: $!";

IPC::Open2: run a process and create a pipe to both STDIN and STDOUT

Use IPC::Open2 when you need to read from and write to a process's STDIN and STDOUT.

use IPC::Open2;

open2 my $out, my $in, "/usr/bin/bc"
    or die "could not run bc";

print $in "5+6\n";

my $answer = <$out>;

IPC::Open3: run a process and create a pipe to STDIN, STDOUT, and STDERR

use IPC::Open3 when you need to capture all three standard file handles of the process. I would write an example, but it works mostly the same way IPC::Open2 does, but with a slightly different order to the arguments and a third file handle.

From command line -

Hadoop fs -copyFromLocal

Hadoop fs -copyToLocal

Or you also use spark FileSystem library to get or put hdfs file.

Hope this is helpful.

In Java, all strings are immutable(Can't change). When you are trying to modify a String, what you are really doing is creating a new one.

Following ways we can create the string object

1. Using String literal

   String str="java";
   

2. Using new keyword

   String str = new String("java");
   

3. Using character array

   char[] helloArray = { 'h', 'e', 'l', 'l', 'o', '.' };
   
   String helloString = new String(helloArray);   
   

coming to String immutability, simply means unmodifiable or unchangeable

Let's take one example

I'm initializing the value to the String literal s

String s="kumar";

Below I'm going to display the decimal representation of the location address using hashcode()

System.out.println(s.hashCode());

Simply printing the value of a String s

System.out.println("value "+s);

Okay, this time I'm inittializing value "kumar" to s1

String s1="kumar";   // what you think is this line, takes new location in the memory ??? 

Okay let's check by displaying hashcode of the s1 object which we created

System.out.println(s1.hashCode());

okay, let's check below code

String s2=new String("Kumar");
    System.out.println(s2.hashCode());  // why this gives the different address ??

Okay, check this below code at last

String s3=new String("KUMAR");
    System.out.println(s3.hashCode());  // again different address ???

YES, if you see Strings 's' and 's1' having the same hashcode because the value hold by 's' & 's1' are same that is 'kumar'

Let's consider String 's2' and 's3' these two Strings hashcode appears to be different in the sense, they both stored in a different location because you see their values are different.

since s and s1 hashcode is same because those values are same and storing in the same location.

Example 1: Try below code and analyze line by line

public class StringImmutable {
public static void main(String[] args) {

    String s="java";
    System.out.println(s.hashCode());
    String s1="javA";
    System.out.println(s1.hashCode());
    String s2=new String("Java");
    System.out.println(s2.hashCode());
    String s3=new String("JAVA");
    System.out.println(s3.hashCode());
}
}

Example 2: Try below code and analyze line by line

public class StringImmutable {
    public static void main(String[] args) {

        String s="java";
        s.concat(" programming");  // s can not be changed "immutablity"
        System.out.println("value of s "+s);
        System.out.println(" hashcode of s "+s.hashCode());

        String s1="java";
        String s2=s.concat(" programming");   // s1 can not be changed "immutablity" rather creates object s2
        System.out.println("value of s1 "+s1);
        System.out.println(" hashcode of s1 "+s1.hashCode());  

        System.out.println("value of s2 "+s2);
        System.out.println(" hashcode of s2 "+s2.hashCode());

    }
}

Okay, Let's look what is the difference between mutable and immutable.

mutable(it change) vs. immutable (it can't change)

public class StringMutableANDimmutable {
    public static void main(String[] args) {


        // it demonstrates immutable concept
        String s="java";
        s.concat(" programming");  // s can not be changed (immutablity)
        System.out.println("value of s ==  "+s); 
        System.out.println(" hashcode of s == "+s.hashCode()+"\n\n");


        // it demonstrates mutable concept
        StringBuffer s1= new StringBuffer("java");
        s1.append(" programming");  // s can be changed (mutablity)
        System.out.println("value of s1 ==  "+s1); 
        System.out.println(" hashcode of s1 == "+s1.hashCode());


    }
}

Any further questions?? please write on...

AWGN Similar to Matlab Function

def awgn(sinal):
    regsnr=54
    sigpower=sum([math.pow(abs(sinal[i]),2) for i in range(len(sinal))])
    sigpower=sigpower/len(sinal)
    noisepower=sigpower/(math.pow(10,regsnr/10))
    noise=math.sqrt(noisepower)*(np.random.uniform(-1,1,size=len(sinal)))
    return noise

You can use MySQL variables to do it. Something like this should work (though, it consists of two queries).

SELECT 0 INTO @x;

SELECT itemID, 
       COUNT(*) AS ordercount, 
       (@x:=@x+1) AS rownumber 
FROM orders 
GROUP BY itemID 
ORDER BY ordercount DESC; 

I had a similar problem, was trying to use the FIND_IN_SET procedure with a string variable.

SET @my_var = 'string1,string2';
SELECT * from my_table WHERE FIND_IN_SET(column_name,@my_var);

and was receiving the error

Error Code: 1267. Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation 'find_in_set'

Short answer:

No need to change any collation_YYYY variables, just add the correct collation next to your variable declaration, i.e.

SET @my_var = 'string1,string2' COLLATE utf8_unicode_ci;
SELECT * from my_table WHERE FIND_IN_SET(column_name,@my_var);

Long answer:

I first checked the collation variables:

mysql> SHOW VARIABLES LIKE 'collation%';
    +----------------------+-----------------+
    | Variable_name        | Value           |
    +----------------------+-----------------+
    | collation_connection | utf8_general_ci |
    +----------------------+-----------------+
    | collation_database   | utf8_general_ci |
    +----------------------+-----------------+
    | collation_server     | utf8_general_ci |
    +----------------------+-----------------+

Then I checked the table collation:

mysql> SHOW CREATE TABLE my_table;

CREATE TABLE `my_table` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `column_name` varchar(40) COLLATE utf8_unicode_ci DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM AUTO_INCREMENT=125 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

This means that my variable was configured with the default collation of utf8_general_ci while my table was configured as utf8_unicode_ci.

By adding the COLLATE command next to the variable declaration, the variable collation matched the collation configured for the table.

Using Query parameter

<a href="edit.jsp?userId=${user.id}" />  

Using Hidden variable .

<form method="post" action="update.jsp">  
...  
   <input type="hidden" name="userId" value="${user.id}">  

you can send Using Session object.

   session.setAttribute("userId", userid);

These values will now be available from any jsp as long as your session is still active.

   int userid = session.getAttribute("userId"); 

list1 = [[], [], [], [], [], 'text', 'text2', [], 'moreText']
list2 = []
for item in list1:
    if item!=[]:
        list2.append(item)
print(list2)

output:

['text', 'text2', 'moreText']

If you are using bootstrap-datepicker you may use this style:

$('#datepicker').datepicker('setStartDate', "01-01-1900");

iOS 9 has made a small change to the handling of URL scheme. You must whitelist the url's that your app will call out to using the LSApplicationQueriesSchemes key in your Info.plist.

Please see post here: http://awkwardhare.com/post/121196006730/quick-take-on-ios-9-url-scheme-changes

The main conclusion is that:

If you call the “canOpenURL” method on a URL that is not in your whitelist, it will return “NO”, even if there is an app installed that has registered to handle this scheme. A “This app is not allowed to query for scheme xxx” syslog entry will appear.

If you call the “openURL” method on a URL that is not in your whitelist, it will fail silently. A “This app is not allowed to query for scheme xxx” syslog entry will appear.

The author also speculates that this is a bug with the OS and Apple will fix this in a subsequent release.

They may look a bit different from normal HTML, but : and @ are valid chars for attribute names and all Vue.js supported browsers can parse it correctly. In addition, they do not appear in the final rendered markup. The shorthand syntax is totally optional, but you will likely appreciate it when you learn more about its usage later.

Source: official documentation.

Check your input parameters, and make sure you don't have one named type. If so then you will have a clash and get this error.

(Posting in case someone might have a use of it).

I was looking for a solution for a problem a bit more sophisticated than OP - replacing EVERY occurrence of something with the number by same thing with incremented number

E.g. Replacing something like this:

<row id="1" />
<row id="2" />
<row id="1" />
<row id="3" />
<row id="1" />

By this:

<row id="2" />
<row id="3" />
<row id="2" />
<row id="4" />
<row id="2" />

Couldnt find the solution online so I wrote my own script in groovy (a bit ugly but does the job):

 /**
 * <p> Finds words that matches template and increases them by 1.
 * '_' in word template represents number.
 *
 * <p> E.g. if template equals 'Row="_"', then:
 * ALL Row=0 will be replaced by Row="1"
 * All Row=1 will be replaced by Row="2"
 * <p> Warning - your find template might not work properly if _ is the last character of it
 * etc.
 * <p> Requirments:
 * - Original text does not contain tepmlate string
 * - Only numbers in non-disrupted sequence are incremented and replaced
 * (i.e. from example below, if Row=4 exists in original text, but Row=3 not, than Row=4 will NOT be 
 * replaced by Row=5)
 */
def replace_inc(String text, int startingIndex, String findTemplate) {
    assert findTemplate.contains('_') : 'search template needs to contain "_" placeholder'
    assert !(findTemplate.replaceFirst('_','').contains('_')) : 'only one "_" placeholder is allowed'
    assert !text.contains('_____') : 'input text should not contain "______" (5 underscores)'
    while (true) {
        findString = findTemplate.replace("_",(startingIndex).toString())
        if (!text.contains(findString)) break;
        replaceString = findTemplate.replace("_", "_____"+(++startingIndex).toString())
        text = text.replaceAll(findString, replaceString)
    }
    return text.replaceAll("_____","") // get rid of '_____' character
}

// input
findTemplate = 'Row="_"'
path = /C:\TEMP\working_copy.txt/
startingIndex = 0

// do stuff
f = new File(path)
outText = replace_inc(f.text,startingIndex,findTemplate)
println "Results \n: " + outText
f.withWriter { out -> out.println outText }
println "Results written to $f"

Using the client manager affects all connections or sets a client machine specific alias.

Use the comma as above: this can be used in an app.config too

It's probably needed if you have firewalls between you and the server too...

If you do not want to convert into int, I prefer this below logic because it can handle nulls IFNULL(field,LTRIM(field,'0'))

DECLARE
    v_max NUMBER;
BEGIN
    SELECT (NVL (MAX (<COLUMN_NAME>), 0) + 1) INTO v_max FROM <TABLE_NAME>;
    EXECUTE IMMEDIATE 'CREATE SEQUENCE <SEQUENCE_NAME> INCREMENT BY 1 START WITH ' || v_max || ' NOCYCLE CACHE 20 NOORDER';
END;

Both codes are only relevant when the phone runs out of memory and kills the service before it finishes executing. START_STICKY tells the OS to recreate the service after it has enough memory and call onStartCommand() again with a null intent. START_NOT_STICKY tells the OS to not bother recreating the service again. There is also a third code START_REDELIVER_INTENT that tells the OS to recreate the service and redeliver the same intent to onStartCommand().

This article by Dianne Hackborn explained the background of this a lot better than the official documentation.

Source: http://android-developers.blogspot.com.au/2010/02/service-api-changes-starting-with.html

The key part here is a new result code returned by the function, telling the system what it should do with the service if its process is killed while it is running:

START_STICKY is basically the same as the previous behavior, where the service is left "started" and will later be restarted by the system. The only difference from previous versions of the platform is that it if it gets restarted because its process is killed, onStartCommand() will be called on the next instance of the service with a null Intent instead of not being called at all. Services that use this mode should always check for this case and deal with it appropriately.

START_NOT_STICKY says that, after returning from onStartCreated(), if the process is killed with no remaining start commands to deliver, then the service will be stopped instead of restarted. This makes a lot more sense for services that are intended to only run while executing commands sent to them. For example, a service may be started every 15 minutes from an alarm to poll some network state. If it gets killed while doing that work, it would be best to just let it be stopped and get started the next time the alarm fires.

START_REDELIVER_INTENT is like START_NOT_STICKY, except if the service's process is killed before it calls stopSelf() for a given intent, that intent will be re-delivered to it until it completes (unless after some number of more tries it still can't complete, at which point the system gives up). This is useful for services that are receiving commands of work to do, and want to make sure they do eventually complete the work for each command sent.

You would want and instead of &&.

In python, you can put ‘j’ or ‘J’ after a number to make it imaginary, so you can write complex literals easily:

>>> 1j
1j
>>> 1J
1j
>>> 1j * 1j
(-1+0j)

The ‘j’ suffix comes from electrical engineering, where the variable ‘i’ is usually used for current. (Reasoning found here.)

The type of a complex number is complex, and you can use the type as a constructor if you prefer:

>>> complex(2,3)
(2+3j)

A complex number has some built-in accessors:

>>> z = 2+3j
>>> z.real
2.0
>>> z.imag
3.0
>>> z.conjugate()
(2-3j)

Several built-in functions support complex numbers:

>>> abs(3 + 4j)
5.0
>>> pow(3 + 4j, 2)
(-7+24j)

The standard module cmath has more functions that handle complex numbers:

>>> import cmath
>>> cmath.sin(2 + 3j)
(9.15449914691143-4.168906959966565j)

The library Hamcrest 1.3 Utility Matchers has a special matcher that uses reflection instead of equals.

assertThat(obj1, reflectEquals(obj2));

You can edit the page in SharePoint designer, convert the List View web part to an XSLT Data View. (by right click + "Convert to XSLT Data View").
Then you can edit the XSLT - find the A tag and add an attribute target="_blank"

Background

All Java objects have a toString() method, which is invoked when you try to print the object.

System.out.println(myObject);  // invokes myObject.toString()

This method is defined in the Object class (the superclass of all Java objects). The Object.toString() method returns a fairly ugly looking string, composed of the name of the class, an @ symbol and the hashcode of the object in hexadecimal. The code for this looks like:

// Code of Object.toString()
public String toString() {
    return getClass().getName() + "@" + Integer.toHexString(hashCode());
}

A result such as com.foo.MyType@2f92e0f4 can therefore be explained as:

• com.foo.MyType - the name of the class, i.e. the class is MyType in the package com.foo.
• @ - joins the string together
• 2f92e0f4 the hashcode of the object.

The name of array classes look a little different, which is explained well in the Javadocs for Class.getName(). For instance, [Ljava.lang.String means:

• [ - an single-dimensional array (as opposed to [[ or [[[ etc.)
• L - the array contains a class or interface
• java.lang.String - the type of objects in the array

Customizing the Output

To print something different when you call System.out.println(myObject), you must override the toString() method in your own class. Here's a simple example:

public class Person {

  private String name;
  
  // constructors and other methods omitted
  
  @Override
  public String toString() {
    return name;
  }
}

Now if we print a Person, we see their name rather than com.foo.Person@12345678.

Bear in mind that toString() is just one way for an object to be converted to a string. Typically this output should fully describe your object in a clear and concise manner. A better toString() for our Person class might be:

@Override
public String toString() {
  return getClass().getSimpleName() + "[name=" + name + "]";
}

Which would print, e.g., Person[name=Henry]. That's a really useful piece of data for debugging/testing.

If you want to focus on just one aspect of your object or include a lot of jazzy formatting, you might be better to define a separate method instead, e.g. String toElegantReport() {...}.

Auto-generating the Output

Many IDEs offer support for auto-generating a toString() method, based on the fields in the class. See docs for Eclipse and IntelliJ, for example.

Several popular Java libraries offer this feature as well. Some examples include:

• ToStringBuilder from Apache Commons Lang

• MoreObjects.ToStringHelper from Google Guava

• @ToString annotation from Project Lombok

Printing groups of objects

So you've created a nice toString() for your class. What happens if that class is placed into an array or a collection?

Arrays

If you have an array of objects, you can call Arrays.toString() to produce a simple representation of the contents of the array. For instance, consider this array of Person objects:

Person[] people = { new Person("Fred"), new Person("Mike") };
System.out.println(Arrays.toString(people));

// Prints: [Fred, Mike]

Note: this is a call to a static method called toString() in the Arrays class, which is different to what we've been discussing above.

If you have a multi-dimensional array, you can use Arrays.deepToString() to achieve the same sort of output.

Collections

Most collections will produce a pretty output based on calling .toString() on every element.

List<Person> people = new ArrayList<>();
people.add(new Person("Alice"));
people.add(new Person("Bob"));    
System.out.println(people);

// Prints [Alice, Bob]

So you just need to ensure your list elements define a nice toString() as discussed above.

OCR which stands for Optical Character Recognition is a computer vision technique used to identify the different types of handwritten digits that are used in common mathematics. To perform OCR in OpenCV we will use the KNN algorithm which detects the nearest k neighbors of a particular data point and then classifies that data point based on the class type detected for n neighbors.

Data Used

This data contains 5000 handwritten digits where there are 500 digits for every type of digit. Each digit is of 20×20 pixel dimensions. We will split the data such that 250 digits are for training and 250 digits are for testing for every class.

Below is the implementation.

Output

91.64

Well, I decided to workout myself on my question to solve the above problem. What I wanted is to implement a simple OCR using KNearest or SVM features in OpenCV. And below is what I did and how. (it is just for learning how to use KNearest for simple OCR purposes).

1) My first question was about letter_recognition.data file that comes with OpenCV samples. I wanted to know what is inside that file.

It contains a letter, along with 16 features of that letter.

And this SOF helped me to find it. These 16 features are explained in the paper Letter Recognition Using Holland-Style Adaptive Classifiers. (Although I didn't understand some of the features at the end)

2) Since I knew, without understanding all those features, it is difficult to do that method. I tried some other papers, but all were a little difficult for a beginner.

So I just decided to take all the pixel values as my features. (I was not worried about accuracy or performance, I just wanted it to work, at least with the least accuracy)

I took the below image for my training data:

(I know the amount of training data is less. But, since all letters are of the same font and size, I decided to try on this).

To prepare the data for training, I made a small code in OpenCV. It does the following things:

1. It loads the image.
2. Selects the digits (obviously by contour finding and applying constraints on area and height of letters to avoid false detections).
3. Draws the bounding rectangle around one letter and wait for key press manually. This time we press the digit key ourselves corresponding to the letter in the box.
4. Once the corresponding digit key is pressed, it resizes this box to 10x10 and saves all 100 pixel values in an array (here, samples) and corresponding manually entered digit in another array(here, responses).
5. Then save both the arrays in separate .txt files.

At the end of the manual classification of digits, all the digits in the training data (train.png) are labeled manually by ourselves, image will look like below:

Below is the code I used for the above purpose (of course, not so clean):

import sys

import numpy as np
import cv2

im = cv2.imread('pitrain.png')
im3 = im.copy()

gray = cv2.cvtColor(im,cv2.COLOR_BGR2GRAY)
blur = cv2.GaussianBlur(gray,(5,5),0)
thresh = cv2.adaptiveThreshold(blur,255,1,1,11,2)

#################      Now finding Contours         ###################

contours,hierarchy = cv2.findContours(thresh,cv2.RETR_LIST,cv2.CHAIN_APPROX_SIMPLE)

samples =  np.empty((0,100))
responses = []
keys = [i for i in range(48,58)]

for cnt in contours:
    if cv2.contourArea(cnt)>50:
        [x,y,w,h] = cv2.boundingRect(cnt)
        
        if  h>28:
            cv2.rectangle(im,(x,y),(x+w,y+h),(0,0,255),2)
            roi = thresh[y:y+h,x:x+w]
            roismall = cv2.resize(roi,(10,10))
            cv2.imshow('norm',im)
            key = cv2.waitKey(0)

            if key == 27:  # (escape to quit)
                sys.exit()
            elif key in keys:
                responses.append(int(chr(key)))
                sample = roismall.reshape((1,100))
                samples = np.append(samples,sample,0)

responses = np.array(responses,np.float32)
responses = responses.reshape((responses.size,1))
print "training complete"

np.savetxt('generalsamples.data',samples)
np.savetxt('generalresponses.data',responses)

Now we enter in to training and testing part.

For the testing part, I used the below image, which has the same type of letters I used for the training phase.

For training we do as follows:

1. Load the .txt files we already saved earlier
2. create an instance of the classifier we are using (it is KNearest in this case)
3. Then we use KNearest.train function to train the data

For testing purposes, we do as follows:

1. We load the image used for testing
2. process the image as earlier and extract each digit using contour methods
3. Draw a bounding box for it, then resize it to 10x10, and store its pixel values in an array as done earlier.
4. Then we use KNearest.find_nearest() function to find the nearest item to the one we gave. ( If lucky, it recognizes the correct digit.)

I included last two steps (training and testing) in single code below:

import cv2
import numpy as np

#######   training part    ############### 
samples = np.loadtxt('generalsamples.data',np.float32)
responses = np.loadtxt('generalresponses.data',np.float32)
responses = responses.reshape((responses.size,1))

model = cv2.KNearest()
model.train(samples,responses)

############################# testing part  #########################

im = cv2.imread('pi.png')
out = np.zeros(im.shape,np.uint8)
gray = cv2.cvtColor(im,cv2.COLOR_BGR2GRAY)
thresh = cv2.adaptiveThreshold(gray,255,1,1,11,2)

contours,hierarchy = cv2.findContours(thresh,cv2.RETR_LIST,cv2.CHAIN_APPROX_SIMPLE)

for cnt in contours:
    if cv2.contourArea(cnt)>50:
        [x,y,w,h] = cv2.boundingRect(cnt)
        if  h>28:
            cv2.rectangle(im,(x,y),(x+w,y+h),(0,255,0),2)
            roi = thresh[y:y+h,x:x+w]
            roismall = cv2.resize(roi,(10,10))
            roismall = roismall.reshape((1,100))
            roismall = np.float32(roismall)
            retval, results, neigh_resp, dists = model.find_nearest(roismall, k = 1)
            string = str(int((results[0][0])))
            cv2.putText(out,string,(x,y+h),0,1,(0,255,0))

cv2.imshow('im',im)
cv2.imshow('out',out)
cv2.waitKey(0)

And it worked, below is the result I got:

Here it worked with 100% accuracy. I assume this is because all the digits are of the same kind and the same size.

But anyway, this is a good start to go for beginners (I hope so).

Javascript now has a specific built in object called Map, you can call as follows :

   var myMap = new Map()

You can update it with .set :

   myMap.set("key0","value")

This has the advantage of methods you can use to handle look ups, like the boolean .has

  myMap.has("key1"); // evaluates to false 

You can use this before calling .get on your Map object to handle looking up non-existent keys

All you have to do is have a height of 100vh on your main container/wrapper, and then set height 100% or 50% for child elements.. depending on what you're trying to achieve. I tried to copy your mock up in a basic sense.

In case you want to center stuff within, look into flexbox. I put in an example for you.

You can view it on full screen, and resize the browser and see how it works. The layout stays the same.

.left {_x000D_
  background: grey;  _x000D_
}_x000D_
_x000D_
.right {_x000D_
  background: black;  _x000D_
}_x000D_
_x000D_
.main-wrapper {_x000D_
  height: 100vh;  _x000D_
}_x000D_
_x000D_
.section {_x000D_
  height: 100%;  _x000D_
  display: flex;_x000D_
  flex-direction: column;_x000D_
  justify-content: center;_x000D_
  align-items: center;_x000D_
}_x000D_
_x000D_
.half {_x000D_
  background: #f9f9f9;_x000D_
  height: 50%;  _x000D_
  width: 100%;_x000D_
  margin: 15px 0;_x000D_
}_x000D_
_x000D_
h4 {_x000D_
  color: white;  _x000D_
}

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">_x000D_
_x000D_
<div class="main-wrapper">_x000D_
  <div class="section left col-xs-3">_x000D_
    <div class="half"><h4>Top left</h4></div>_x000D_
    <div class="half"><h4>Bottom left</h4></div>_x000D_
  </div>_x000D_
  <div class="section right col-xs-9">_x000D_
    <h4>Extra step: center stuff here</h4>_x000D_
  </div>_x000D_
</div>

Obviously, the standard library provided operator does not know what to do with your user defined type mystruct. It only works for predefined data types. To be able to use it for your own data type, You need to overload operator << to take your user defined data type.

Use a comparison function:

bool compareByLength(const data &a, const data &b)
{
    return a.word.size() < b.word.size();
}

and then use std::sort in the header #include <algorithm>:

std::sort(info.begin(), info.end(), compareByLength);

The right way is this:

Integer i = Integer.class.cast(obj);

The method cast() is a much safer alternative to compile-time casting.

I think it is better if you just created it like this:

var arr = [];

arr = {
   key1: 'value1',
   key2:'value2'
};

For more info, take a look at this:

JavaScript Data Structures - Associative Array

There are two types of WITH clauses:

Here is the FizzBuzz in SQL form, using a WITH common table expression (CTE).

;WITH mil AS (
 SELECT TOP 1000000 ROW_NUMBER() OVER ( ORDER BY c.column_id ) [n]
 FROM master.sys.all_columns as c
 CROSS JOIN master.sys.all_columns as c2
)                
 SELECT CASE WHEN n  % 3 = 0 THEN
             CASE WHEN n  % 5 = 0 THEN 'FizzBuzz' ELSE 'Fizz' END
        WHEN n % 5 = 0 THEN 'Buzz'
        ELSE CAST(n AS char(6))
     END + CHAR(13)
 FROM mil

Here is a select statement also using a WITH clause

SELECT * FROM orders WITH (NOLOCK) where order_id = 123

I would recommend using SoundJS, a library I've help develop. It allows you to write a single code base that works everywhere, with SoundJS picking web audio, html audio, or flash audio as appropriate.

It will allow you to do all of the thing you want:

• Play and mix multiple sounds,
• Play the same sample multiple times, possibly overlapping playbacks
• Interrupt playback of a sample at any point
• play WAV files containing (depending on browser support)

Hope that helps.

 <html>
 <head></head>
 <body>
 <canvas id="canvas" width="300" height="300"></canvas>
 <script>
  var sun = new Image();
  var moon = new Image();
  var earth = new Image();
  function init() {
  sun.src = 'https://mdn.mozillademos.org/files/1456/Canvas_sun.png';
  moon.src = 'https://mdn.mozillademos.org/files/1443/Canvas_moon.png';
  earth.src = 'https://mdn.mozillademos.org/files/1429/Canvas_earth.png';
  window.requestAnimationFrame(draw);
  }

  function draw() {
  var ctx = document.getElementById('canvas').getContext('2d');

  ctx.globalCompositeOperation = 'destination-over';
  ctx.clearRect(0, 0, 300, 300);

  ctx.fillStyle = 'rgba(0, 0, 0, 0.4)';
  ctx.strokeStyle = 'rgba(0, 153, 255, 0.4)';
  ctx.save();
  ctx.translate(150, 150);

  // Earth
  var time = new Date();
  ctx.rotate(((2 * Math.PI) / 60) * time.getSeconds() + ((2 * Math.PI) / 60000) * 
  time.getMilliseconds());
  ctx.translate(105, 0);
  ctx.fillRect(10, -19, 55, 31); 
  ctx.drawImage(earth, -12, -12);

   // Moon
  ctx.save();
  ctx.rotate(((2 * Math.PI) / 6) * time.getSeconds() + ((2 * Math.PI) / 6000) * 
  time.getMilliseconds());
  ctx.translate(0, 28.5);
  ctx.drawImage(moon, -3.5, -3.5);
  ctx.restore();

  ctx.restore();

   ctx.beginPath();
   ctx.arc(150, 150, 105, 0, Math.PI * 2, false);
   ctx.stroke();

   ctx.drawImage(sun, 0, 0, 300, 300);

   window.requestAnimationFrame(draw);
    }

   init();
   </script>
   </body>
   </html>

It is not elegant but possible to do it as one-liner <a> element

<a href onclick="event.preventDefault(); location+='&like=like'">Like</a>

    $ch = curl_init();

    $data = array(
        'client_id' => 'xx',
        'client_secret' => 'xx',
        'redirect_uri' => $x,
        'grant_type' => 'xxx',
        'code' => $xx,
    );

    $data = http_build_query($data);

    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    curl_setopt($ch, CURLOPT_URL, "https://example.com");
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_POST, 1);

    $output = curl_exec($ch);

What you can do is

RelationActiveEnum ae = Enum.valueOf(RelationActiveEnum.class,
                                     RelationActiveEnum.ACTIVE.name();

or

RelationActiveEnum ae = RelationActiveEnum.valueOf(
                                     RelationActiveEnum.ACTIVE.name();

or

// not recommended as the ordinal might not match the value
RelationActiveEnum ae = RelationActiveEnum.values()[
                                     RelationActiveEnum.ACTIVE.value];

By if you want to lookup by a field of an enum you need to construct a collection such as a List, an array or a Map.

public enum RelationActiveEnum {
    Invited(0),
    Active(1),
    Suspended(2);

    private final int code;

    private RelationActiveEnum(final int code) {
        this.code = code;
    }

    private static final Map<Integer, RelationActiveEnum> BY_CODE_MAP = new LinkedHashMap<>();
    static {
        for (RelationActiveEnum rae : RelationActiveEnum.values()) {
            BY_CODE_MAP.put(rae.code, rae);
        }
    }

    public static RelationActiveEnum forCode(int code) {
        return BY_CODE_MAP.get(code);
    }
}

allows you to write

String name = RelationActiveEnum.forCode(RelationActiveEnum.ACTIVE.code).name();

Is there a way to get it via $event->getComposer()->getRepositoryManager()->getAllPackages()

The following snippet will start an operation in a separate thread, then wait for up to 10 seconds for the operation to complete. If the operation does not complete in time, the code will attempt to cancel the operation, then continue on its merry way. Even if the operation cannot be cancelled easily, the parent thread will not wait for the child thread to terminate.

ExecutorService executorService = getExecutorService();
Future<SomeClass> future = executorService.submit(new Callable<SomeClass>() {
    public SomeClass call() {
        // Perform long-running task, return result. The code should check
        // interrupt status regularly, to facilitate cancellation.
    }
});
try {
    // Real life code should define the timeout as a constant or
    // retrieve it from configuration
    SomeClass result = future.get(10, TimeUnit.SECONDS);
    // Do something with the result
} catch (TimeoutException e) {
    future.cancel(true);
    // Perform other error handling, e.g. logging, throwing an exception
}

The getExecutorService() method can be implemented in a number of ways. If you do not have any particular requirements, you can simply call Executors.newCachedThreadPool() for thread pooling with no upper limit on the number of threads.

For anyone who came here looking for how to get the true accordion effect and only allow one row to be expanded at a time, you can add an event handler for show.bs.collapse like so:

$('.collapse').on('show.bs.collapse', function () {
    $('.collapse.in').collapse('hide');
});

I modified this example to do so here: http://jsfiddle.net/QLfMU/116/

The only solution that works for me on Linux, Mac and Windows:

public static String getJarContainingFolder(Class aclass) throws Exception {
  CodeSource codeSource = aclass.getProtectionDomain().getCodeSource();

  File jarFile;

  if (codeSource.getLocation() != null) {
    jarFile = new File(codeSource.getLocation().toURI());
  }
  else {
    String path = aclass.getResource(aclass.getSimpleName() + ".class").getPath();
    String jarFilePath = path.substring(path.indexOf(":") + 1, path.indexOf("!"));
    jarFilePath = URLDecoder.decode(jarFilePath, "UTF-8");
    jarFile = new File(jarFilePath);
  }
  return jarFile.getParentFile().getAbsolutePath();
}

if you are using .bind(this), try this:

let index = Array.from(evt.target.parentElement.children).indexOf(evt.target);

$(this.pagination).find("a").on('click', function(evt) {
        let index = Array.from(evt.target.parentElement.children).indexOf(evt.target);

        this.goTo(index);
    }.bind(this))

Well there is a more easy way to do this

drawerToggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.open_drawer, R.string.close_drawer);
arrow = drawerToggle.getDrawerArrowDrawable();

And then

arrow.setColor(getResources().getColor(R.color.blue);

You are right, the documentation lacks of those methods. However when I dug into rxjs repository, I found nice comments about tap (too long to paste here) and pipe operators:

  /**
   * Used to stitch together functional operators into a chain.
   * @method pipe
   * @return {Observable} the Observable result of all of the operators having
   * been called in the order they were passed in.
   *
   * @example
   *
   * import { map, filter, scan } from 'rxjs/operators';
   *
   * Rx.Observable.interval(1000)
   *   .pipe(
   *     filter(x => x % 2 === 0),
   *     map(x => x + x),
   *     scan((acc, x) => acc + x)
   *   )
   *   .subscribe(x => console.log(x))
   */

In brief:

Pipe: Used to stitch together functional operators into a chain. Before we could just do observable.filter().map().scan(), but since every RxJS operator is a standalone function rather than an Observable's method, we need pipe() to make a chain of those operators (see example above).

Tap: Can perform side effects with observed data but does not modify the stream in any way. Formerly called do(). You can think of it as if observable was an array over time, then tap() would be an equivalent to Array.forEach().

All solutions here doesn't really bind the model to the input because you will have to change back the dateAsString to be saved as date in your object (in the controller after the form will be submitted).

If you don't need the binding effect, but just to show it in the input,

a simple could be:

<input type="date" value="{{ item.date | date: 'yyyy-MM-dd' }}" id="item_date" />

Then, if you like, in the controller, you can save the edited date in this way:

  $scope.item.date = new Date(document.getElementById('item_date').value).getTime();

be aware: in your controller, you have to declare your item variable as $scope.item in order for this to work.

Method 1:

    [1] pry(main)> [1,2,3,4].sum
    => 10
    [2] pry(main)> [].sum
    => 0
    [3] pry(main)> [1,2,3,5,nil].sum
    TypeError: nil can't be coerced into Integer

Method 2:

   [24] pry(main)> [].inject(:+)
   => nil
   [25] pry(main)> [].inject(0, :+)
   => 0
   [4] pry(main)> [1,2,3,4,5].inject(0, :+)
   => 15
   [5] pry(main)> [1,2,3,4,nil].inject(0, :+)
   TypeError: nil can't be coerced into Integer
   from (pry):5:in `+'

Method 3:

   [6] pry(main)> [1,2,3].reduce(:+)
   => 6
   [9] pry(main)> [].reduce(:+)
   => nil
   [7] pry(main)> [1,2,nil].reduce(:+)
   TypeError: nil can't be coerced into Integer
   from (pry):7:in `+'

Method 4: When Array contains an nil and empty values, by default if you use any above functions reduce, sum, inject everything will through the

TypeError: nil can't be coerced into Integer

You can overcome this by,

   [16] pry(main)> sum = 0 
   => 0
   [17] pry(main)> [1,2,3,4,nil, ''].each{|a| sum+= a.to_i }
   => [1, 2, 3, 4, nil, ""]
   [18] pry(main)> sum
   => 10

Method 6: eval

Evaluates the Ruby expression(s) in string.

  [26] pry(main)> a = [1,3,4,5]
  => [1, 3, 4, 5]
  [27] pry(main)> eval a.join '+'
  => 13
  [30] pry(main)> a = [1,3,4,5, nil]
  => [1, 3, 4, 5, nil]
  [31] pry(main)> eval a.join '+'
  SyntaxError: (eval):1: syntax error, unexpected end-of-input
  1+3+4+5+

You should try HttpAutoindexModule.

Set autoindex option to on. It is off by default.

Your example configuration should be ok

location /{ 
   root /home/yozloy/html/; 
   index index.html; 
   autoindex on;
}

Without autoindex option you should be getting Error 403 for requests that end with / on directories that do not have an index.html file. With this option you should be getting a simple listing:

<html>
<head><title>Index of /</title></head>
<body bgcolor="white">
<h1>Index of /test/</h1><hr><pre><a href="../">../</a>
<a href="test.txt">test.txt</a>                 19-May-2012 10:43            0
</pre><hr></body>
</html>

Edit: Updated the listing to delete any references to test

See the LayoutInflater class.

LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
ViewGroup parent = (ViewGroup)findViewById(R.id.where_you_want_to_insert);
inflater.inflate(R.layout.the_child_view, parent);

This worked for me:

ios sdk 9.3

into your build setting of app.xcodeproj valid architecture: armv7 armv7s Build Active architecture : No

Clean and build , worked for me.

It is also very important to distinguish a SENDING multicast socket from a RECEIVING multicast socket.

I agree with all the answers above regarding RECEIVING multicast sockets. The OP noted that binding a RECEIVING socket to an interface did not help. However, it is necessary to bind a multicast SENDING socket to an interface.

For a SENDING multicast socket on a multi-homed server, it is very important to create a separate socket for each interface you want to send to. A bound SENDING socket should be created for each interface.

  // This is a fix for that bug that causes Servers to pop offline/online.
  // Servers will intermittently pop offline/online for 10 seconds or so.
  // The bug only happens if the machine had a DHCP gateway, and the gateway is no longer accessible.
  // After several minutes, the route to the DHCP gateway may timeout, at which
  // point the pingponging stops.
  // You need 3 machines, Client machine, server A, and server B
  // Client has both ethernets connected, and both ethernets receiving CITP pings (machine A pinging to en0, machine B pinging to en1)
  // Now turn off the ping from machine B (en1), but leave the network connected.
  // You will notice that the machine transmitting on the interface with
  // the DHCP gateway will fail sendto() with errno 'No route to host'
  if ( theErr == 0 )
  {
     // inspired by 'ping -b' option in man page:      
     //      -b boundif
     //             Bind the socket to interface boundif for sending.
     struct sockaddr_in bindInterfaceAddr;
     bzero(&bindInterfaceAddr, sizeof(bindInterfaceAddr));
     bindInterfaceAddr.sin_len = sizeof(bindInterfaceAddr);
     bindInterfaceAddr.sin_family = AF_INET;
     bindInterfaceAddr.sin_addr.s_addr = htonl(interfaceipaddr);
     bindInterfaceAddr.sin_port = 0; // Allow the kernel to choose a random port number by passing in 0 for the port.
     theErr = bind(mSendSocketID, (struct sockaddr *)&bindInterfaceAddr, sizeof(bindInterfaceAddr));
     struct sockaddr_in serverAddress;
     int namelen = sizeof(serverAddress);  
     if (getsockname(mSendSocketID, (struct sockaddr *)&serverAddress, (socklen_t *)&namelen) < 0) {
        DLogErr(@"ERROR Publishing service... getsockname err");
     }
     else
     {
        DLog( @"socket %d bind, %@ port %d", mSendSocketID, [NSString stringFromIPAddress:htonl(serverAddress.sin_addr.s_addr)], htons(serverAddress.sin_port) );
     }

Without this fix, multicast sending will intermittently get sendto() errno 'No route to host'. If anyone can shed light on why unplugging a DHCP gateway causes Mac OS X multicast SENDING sockets to get confused, I would love to hear it.

It's not good practice. You soon will get confused about it. It looks similiar to a common error: misuse "=" and "==" operators.

You should break it into 2 lines of codes. It not only helps to make the code clearer, but also easy to refactor in the future. Imagine that you change the IF condition? You may accidently remove the line and your variable no longer get the value assigned to it.

Update with React v16 and ReactRouter v4.2.0 (October 2017):

class BackButton extends Component {
  static contextTypes = {
    router: () => true, // replace with PropTypes.object if you use them
  }

  render() {
    return (
      <button
        className="button icon-left"
        onClick={this.context.router.history.goBack}>
          Back
      </button>
    )
  }
}

Update with React v15 and ReactRouter v3.0.0 (August 2016):

var browserHistory = ReactRouter.browserHistory;

var BackButton = React.createClass({
  render: function() {
    return (
      <button
        className="button icon-left"
        onClick={browserHistory.goBack}>
        Back
      </button>
    );
  }
});

Created a fiddle with a little bit more complex example with an embedded iframe: https://jsfiddle.net/kwg1da3a/

React v14 and ReacRouter v1.0.0 (Sep 10, 2015)

You can do this:

var React = require("react");
var Router = require("react-router");

var SomePage = React.createClass({
  ...

  contextTypes: {
    router: React.PropTypes.func
  },
  ...

  handleClose: function () {
    if (Router.History.length > 1) {
      // this will take you back if there is history
      Router.History.back();
    } else {
      // this will take you to the parent route if there is no history,
      // but unfortunately also add it as a new route
      var currentRoutes = this.context.router.getCurrentRoutes();
      var routeName = currentRoutes[currentRoutes.length - 2].name;
      this.context.router.transitionTo(routeName);
    }
  },
  ...

You need to be careful that you have the necessary history to go back. If you hit the page directly and then hit back it will take you back in the browser history before your app.

This solution will take care of both scenarios. It will, however, not handle an iframe that can navigate within the page (and add to the browser history), with the back button. Frankly, I think that is a bug in the react-router. Issue created here: https://github.com/rackt/react-router/issues/1874

I had this same issue and wondered why it didn't happen with a bitbucket repo that was cloned with https. Looking into it a bit I found that the config for the BB repo had a URL that included my username. So I manually edited the config for my GH repo like so and voila, no more username prompt. I'm on Windows.

Edit your_repo_dir/.git/config (remember: .git folder is hidden)

Change:

https://github.com/WEMP/project-slideshow.git

to:

https://*username*@github.com/WEMP/project-slideshow.git

Save the file. Do a git pull to test it.

The proper way to do this is probably by using git bash commands to edit the setting, but editing the file directly didn't seem to be a problem.

I bring you my solution which offers the following features:

• Supports 2 ways binding

• Auto updates the TreeViewItem.IsSelected properties (according to the SelectedItem)

• No TreeView subclassing

• Items bound to ViewModel can be of any type (even null)

1/ Paste the following code in your CS:

public class BindableSelectedItem
{
    public static readonly DependencyProperty SelectedItemProperty = DependencyProperty.RegisterAttached(
        "SelectedItem", typeof(object), typeof(BindableSelectedItem), new PropertyMetadata(default(object), OnSelectedItemPropertyChangedCallback));

    private static void OnSelectedItemPropertyChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
        var treeView = d as TreeView;
        if (treeView != null)
        {
            BrowseTreeViewItems(treeView, tvi =>
            {
                tvi.IsSelected = tvi.DataContext == e.NewValue;
            });
        }
        else
        {
            throw new Exception("Attached property supports only TreeView");
        }
    }

    public static void SetSelectedItem(DependencyObject element, object value)
    {
        element.SetValue(SelectedItemProperty, value);
    }

    public static object GetSelectedItem(DependencyObject element)
    {
        return element.GetValue(SelectedItemProperty);
    }

    public static void BrowseTreeViewItems(TreeView treeView, Action<TreeViewItem> onBrowsedTreeViewItem)
    {
        var collectionsToVisit = new System.Collections.Generic.List<Tuple<ItemContainerGenerator, ItemCollection>> { new Tuple<ItemContainerGenerator, ItemCollection>(treeView.ItemContainerGenerator, treeView.Items) };
        var collectionIndex = 0;
        while (collectionIndex < collectionsToVisit.Count)
        {
            var itemContainerGenerator = collectionsToVisit[collectionIndex].Item1;
            var itemCollection = collectionsToVisit[collectionIndex].Item2;
            for (var i = 0; i < itemCollection.Count; i++)
            {
                var tvi = itemContainerGenerator.ContainerFromIndex(i) as TreeViewItem;
                if (tvi == null)
                {
                    continue;
                }

                if (tvi.ItemContainerGenerator.Status == System.Windows.Controls.Primitives.GeneratorStatus.ContainersGenerated)
                {
                    collectionsToVisit.Add(new Tuple<ItemContainerGenerator, ItemCollection>(tvi.ItemContainerGenerator, tvi.Items));
                }

                onBrowsedTreeViewItem(tvi);
            }

            collectionIndex++;
        }
    }

}

2/ Example of use in your XAML file

<TreeView myNS:BindableSelectedItem.SelectedItem="{Binding Path=SelectedItem, Mode=TwoWay}" />  

You can directly use the equality operator

<script>
    var firstName;
    var lastName = null;
    /* Since null == undefined is true, the following statements will catch both null and undefined */
        if(firstName == null){
            alert('Variable "firstName" is undefined.');
        }    
        if(lastName == null){
           alert('Variable "lastName" is null.');
        }
</script>

demo @ How to determine if variable is undefined or null using JavaScript

Here's a collection of media queries that will allow you to do that for any version of Internet Explorer (from IE6 to IE11+), Firefox, Chrome & Safari (EDIT: also added Opera).

IE 6

* html .ie6 { property: value; }

or

.ie6 { _property: value; }

IE 7

*+html .ie7 { property: value; }

or

*:first-child+html .ie7 { property: value; }

IE 6 and 7

@media screen\9 { 
    .ie67 {
        property: value; 
    }
}

or

.ie67 { *property: value; }

or

.ie67 { #property: value; }

IE 6, 7 and 8

@media \0screen\,screen\9 {
    .ie678 {
        property: value;
    }
}

IE 8

html>/**/body .ie8 { property: value; }

or

@media \0screen {
    .ie8 {
        property: value;
    }
}

IE 8 Standards Mode

.ie8 { property /*\**/: value\9 }

IE 8,9 and 10

@media screen\0 {
    .ie8910 {
        property: value;
    }
}

IE 9 only

@media screen and (min-width:0\0) and (min-resolution: .001dpcm) { 
    // IE9 CSS
    .ie9{
        property: value;
    }
}

IE 9 and above

@media screen and (min-width:0\0) and (min-resolution: +72dpi) {
    // IE9+ CSS
    .ie9up { 
        property: value; 
    }
}

IE 9 and 10

@media screen and (min-width:0\0) {
    .ie910 {
        property: value\9;
    } /* backslash-9 removes ie11+ & old Safari 4 */
}

IE 10 only

_:-ms-lang(x), .ie10 { property: value\9; }

IE 10 and above

_:-ms-lang(x), .ie10up { property: value; }

or

@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
    .ie10up {
        property:value;
    }
}

IE 11 (and above..)

_:-ms-fullscreen, :root .ie11up { property: value; }

Firefox (any version)

@-moz-document url-prefix() {
    .ff {
        color: red;
    }
}

Firefox (Quantum Only / Stylo)

@-moz-document url-prefix() {
    @supports (animation: calc(0s)) {
        /* Stylo */
        .ffStylo {
            property: value;
        }
    }
}

Firefox Legacy (pre-Stylo)

@-moz-document url-prefix() {
    @supports not (animation: calc(0s)) {
        /* Gecko */
        .ffGecko {
            property: value;
        }
    }
}

Webkit (Chrome & Safari, any version)

@media screen and (-webkit-min-device-pixel-ratio:0) { 
    property: value;
}

Google Chrome (29+)

@media screen and (-webkit-min-device-pixel-ratio:0) and (min-resolution:.001dpcm) {
    .chrome {
        property: value;
    }
}

Safari (7.1+)

_::-webkit-full-page-media, _:future, :root .safari_only {
    property: value;
}

Safari (from 6.1 to 10.0)

@media screen and (min-color-index:0) and(-webkit-min-device-pixel-ratio:0) { 
    @media {
        .safari6 { 
            color:#0000FF; 
            background-color:#CCCCCC; 
        }
    }
}

Safari (10.1+)

@media not all and (min-resolution:.001dpcm) { 
    @media {
        .safari10 { 
            color:#0000FF; 
            background-color:#CCCCCC; 
        }
    }
}

Opera (12+)

@media (min-resolution: .001dpcm) {
    _:-o-prefocus, .selector {
        .opera12 {
            color:#0000FF; 
            background-color:#CCCCCC; 
        }
    } 
}

Opera (11 and lower)

@media all and (-webkit-min-device-pixel-ratio:10000), not all and (-webkit-min-device-pixel-ratio:0) {
    .opera11 {
        color:#0000FF; 
        background-color:#CCCCCC; 
    }
}

For further info or additional media queries, visit the browserhacks.com web site and/or check out this blog post that I wrote on this topic.

find . -type f -exec cat {} \; -print

CDATA has no meaning at all in HTML.

CDATA is an XML construct which sets a tag's contents that is normally #PCDATA - parsed character data, to be instead taken as #CDATA, that is, non-parsed character data. It is only relevant and valid in XHTML.

It is used in script tags to avoid parsing < and &. In HTML, this is not needed, because in HTML, script is already #CDATA.

Unfortunately, it the Developer Tools in Chrome seem to be unable to "stop on all errors", as Firebug does.

You can do something like this using Blob.

<a download="content.txt" ng-href="{{ url }}">download</a>

in your controller:

var content = 'file content for example';
var blob = new Blob([ content ], { type : 'text/plain' });
$scope.url = (window.URL || window.webkitURL).createObjectURL( blob );

in order to enable the URL:

app = angular.module(...);
app.config(['$compileProvider',
    function ($compileProvider) {
        $compileProvider.aHrefSanitizationWhitelist(/^\s*(https?|ftp|mailto|tel|file|blob):/);
}]);

Please note that

Each time you call createObjectURL(), a new object URL is created, even if you've already created one for the same object. Each of these must be released by calling URL.revokeObjectURL() when you no longer need them. Browsers will release these automatically when the document is unloaded; however, for optimal performance and memory usage, if there are safe times when you can explicitly unload them, you should do so.

Source: MDN

The following worked for me:

$("[id=attached_docs][value=123]")

It's the response code a SIP User Agent Server (UAS) will send to the client after the client sends a CANCEL request for the original unanswered INVITE request (yet to receive a final response).

Here is a nice CANCEL SIP Call Flow illustration.

You could try as well:

let diceRoll = Int(arc4random_uniform(UInt32(6)))

I had to add "UInt32" to make it work.

It depends what kind of UUID you want.

• The standard Java UUID class generates Version 4 (random) UUIDs. (UPDATE - Version 3 (name) UUIDs can also be generated.) It can also handle other variants, though it cannot generate them. (In this case, "handle" means construct UUID instances from long, byte[] or String representations, and provide some appropriate accessors.)

• The Java UUID Generator (JUG) implementation purports to support "all 3 'official' types of UUID as defined by RFC-4122" ... though the RFC actually defines 4 types and mentions a 5th type.

For more information on UUID types and variants, there is a good summary in Wikipedia, and the gory details are in RFC 4122 and the other specifications.

.data() works perfectly for most cases. The only time I had a problem was when the JSON string itself had a single quote. I could not find any easy way to get past this so resorted to this approach (am using Coldfusion as server language):

    <!DOCTYPE html>
        <html>
            <head>
                <title>
                    Special Chars in Data Attribute
                </title>
                <meta http-equiv="X-UA-Compatible" content="IE=edge">
                <script src="https://code.jquery.com/jquery-1.12.2.min.js"></script>
                <script>
                    $(function(){
                        var o = $("##xxx");
                        /**
                            1. get the data attribute as a string using attr()
                            2. unescape
                            3. convert unescaped string back to object
                            4. set the original data attribute to future calls get it as JSON.
                        */
                        o.data("xxx",jQuery.parseJSON(unescape(o.attr("data-xxx"))));
                        console.log(o.data("xxx")); // this is JSON object.
                    });
                </script>
                <title>
                    Title of the document
                </title>
            </head>
            <body>
                <cfset str = {name:"o'reilly's stuff",code:1}>
<!-- urlencode is a CF function to UTF8 the string, serializeJSON converts object to strin -->
                <div id="xxx" data-xxx='#urlencodedformat(serializejson(str))#'>
                </div>
            </body>
        </html>

I just input some value that I knew was invalid and here is the output:

'whatToInput' is not a supported event for HtmlPanelGrid. Please specify one of these supported event names: click, dblclick, keydown, keypress, keyup, mousedown, mousemove, mouseout, mouseover, mouseup.

So values you can pass to event are

• click
• dblclick
• keydown
• mousedown
• mousemove
• mouseover
• mouseup

control-shift-L should open the log(s) for you. this will by default be the messages log, but if you create the item that is creating the error the Compiler Log will show up (for me the box shows up in the bottom middle left).

if the messages log is the only log that shows up, simply re-execute the item that was causing the failure and the compiler log will show up

for instance, hit Control-shift-L then execute this

CREATE OR REPLACE FUNCTION TEST123() IS
BEGIN
VAR := 2;
end TEST123;

and you will see the message "Error(1,18): PLS-00103: Encountered the symbol ")" when expecting one of the following: current delete exists prior "

(You can also see this in "View--Log")

One more thing, if you are having a problem with a (function || package || procedure) if you do the coding via the SQL Developer interface (by finding the object in question on the connections tab and editing it the error will be immediately displayed (and even underlined at times)

If you want to handle server errors globally, you may want to register an interceptor service for $httpProvider:

$httpProvider.interceptors.push(function ($q) {
    return {
        'responseError': function (rejection) {
            // do something on error
            if (canRecover(rejection)) {
                return responseOrNewPromise
            }
            return $q.reject(rejection);
        }
    };
});

Docs: http://docs.angularjs.org/api/ng.$http

It could be that you have not configured the Amazon Security Group assigned to your EC2 Instance to accept incoming requests on port 3306 (default port for MySQL).

If this is the case then you can easily open up the port for the security group in a few button clicks:

1) Log into you AWS Console and go to 'EC2'

2) On the left hand menu under 'Network & Security' go to 'Security Groups'

3) Check the Security Group in question

4) Click on 'Inbound tab'

5) Choose 'MYSQL' from drop down list and click 'Add Rule'

Might not be the reason but worth a go...

Two simple solutions:

1. Execute your code once before the while loop

   actions() {
      check_if_file_present
      # Do other stuff
   }
   
   actions #1st execution
   while [ current_time <= $cutoff ]; do
      actions # Loop execution
   done
   

2. Or:

   while : ; do
       actions
       [[ current_time <= $cutoff ]] || break
   done
   

Either you are quoting wrong or github has different recommendation on different pages or they may learned with time and updated their reco.

We strongly recommend using an SSH connection when interacting with GitHub. SSH keys are a way to identify trusted computers, without involving passwords. The steps below will walk you through generating an SSH key and then adding the public key to your GitHub account.

https://help.github.com/articles/generating-ssh-keys

In case you are using application.yml add the Following lines to it

server:
     port: 9000

and of course 0 for random port.

This is a hairy one to answer, because you didn't give the full context of what you're doing. The accepted answer will work, but in some cases will cause poor performance. That, and it's going to be harder to test.

If you're doing this as part of a static form, fine. The accepted answer will work, even if it isn't easy to test, and it's hinky.

If you want to be "Angular" about this:

You'll want to keep any "business logic" (i.e. logic that alters data to be displayed) out of your views. This is so you can unit test your logic, and so you don't end up tightly coupling your controller and your view. Theoretically, you should be able to point your controller at another view and use the same values from the scopes. (if that makes sense).

You'll also want to consider that any function calls inside of a binding (such as {{}} or ng-bind or ng-bind-html) will have to be evaluated on every digest, because angular has no way of knowing if the value has changed or not like it would with a property on the scope.

The "angular" way to do this would be to cache the value in a property on the scope on change using an ng-change event or even a $watch.

For example with a static form:

angular.controller('MainCtrl', function($scope, $window) {
   $scope.count = 0;
   $scope.total = 1;

   $scope.updatePercentage = function () {
      $scope.percentage = $window.Math.round((100 * $scope.count) / $scope.total);
   };
});

<form name="calcForm">
   <label>Count <input name="count" ng-model="count" 
                  ng-change="updatePercentage()"
                  type="number" min="0" required/></label><br/>
   <label>Total <input name="total" ng-model="total"
                  ng-change="updatePercentage()"
                  type="number" min="1" required/></label><br/>
   <hr/>
   Percentage: {{percentage}}
</form>

And now you can test it!

describe('Testing percentage controller', function() {
  var $scope = null;
  var ctrl = null;

  //you need to indicate your module in a test
  beforeEach(module('plunker'));

  beforeEach(inject(function($rootScope, $controller) {
    $scope = $rootScope.$new();

    ctrl = $controller('MainCtrl', {
      $scope: $scope
    });
  }));

  it('should calculate percentages properly', function() {
    $scope.count = 1;
    $scope.total = 1;
    $scope.updatePercentage();
    expect($scope.percentage).toEqual(100);

    $scope.count = 1;
    $scope.total = 2;
    $scope.updatePercentage();
    expect($scope.percentage).toEqual(50);

    $scope.count = 497;
    $scope.total = 10000;
    $scope.updatePercentage();
    expect($scope.percentage).toEqual(5); //4.97% rounded up.

    $scope.count = 231;
    $scope.total = 10000;
    $scope.updatePercentage();
    expect($scope.percentage).toEqual(2); //2.31% rounded down.
  });
});

You can put the condition after the WHEN clause, like so:

SELECT
  CASE
    WHEN PAT_ENT.SCR_DT is not null and PAT_ENTRY.ELIGIBILITY is null THEN 'Favor'
    WHEN PAT_ENT.SCR_DT is not null and PAT_ENTRY.EL = 'No' THEN 'Error'
    WHEN PAT_ENTRY.EL = 'Yes' and ISNULL(DS.DES, 'OFF') = 'OFF' THEN 'Active'
    WHEN DS.DES = 'N' THEN 'Early Term'
    WHEN DS.DES = 'Y' THEN 'Complete'
  END
FROM
  ....

Of course, the argument could be made that complex rules like this belong in your business logic layer, not in a stored procedure in the database...

You can set the margin and padding of either an ol or ul in CSS

ol {
margin-left: 0;
padding-left: 3em;
list-style-position: outside;
}

Usually, uname with its various options will tell you what environment you're running in:

pax> uname -a
CYGWIN_NT-5.1 IBM-L3F3936 1.5.25(0.156/4/2) 2008-06-12 19:34 i686 Cygwin

pax> uname -s
CYGWIN_NT-5.1

And, according to the very helpful schot (in the comments), uname -s gives Darwin for OSX and Linux for Linux, while my Cygwin gives CYGWIN_NT-5.1. But you may have to experiment with all sorts of different versions.

So the bash code to do such a check would be along the lines of:

unameOut="$(uname -s)"
case "${unameOut}" in
    Linux*)     machine=Linux;;
    Darwin*)    machine=Mac;;
    CYGWIN*)    machine=Cygwin;;
    MINGW*)     machine=MinGw;;
    *)          machine="UNKNOWN:${unameOut}"
esac
echo ${machine}

Note that I'm assuming here that you're actually running within CygWin (the bash shell of it) so paths should already be correctly set up. As one commenter notes, you can run the bash program, passing the script, from cmd itself and this may result in the paths not being set up as needed.

If you are doing that, it's your responsibility to ensure the correct executables (i.e., the CygWin ones) are being called, possibly by modifying the path beforehand or fully specifying the executable locations (e.g., /c/cygwin/bin/uname).

In case .empty() doesn't work for you, which is for me

function SetDropDownToEmpty() 
{           
$('#dropdown').find('option').remove().end().append('<option value="0"></option>');
$("#dropdown").trigger("liszt:updated");          
}

$(document).ready(
SetDropDownToEmpty() ;
)

With gawk , you can use match function:

    x="hey there how are you"
    echo "$x" |awk --re-interval '{match($0,/(.{4})how(.{4})/,a);print a[1],a[2]}'
    ere   are

If you are ok with perl, more flexible solution : Following will print three characters before the pattern followed by actual pattern and then 5 character after the pattern.

echo hey there how are you |perl -lne 'print "$1$2$3" if /(.{3})(there)(.{5})/'
ey there how

This can also be applied to words instead of just characters.Following will print one word before the actual matching string.

echo hey there how are you |perl -lne 'print $1 if /(\w+) there/'
hey

Following will print one word after the pattern:

echo hey there how are you |perl -lne 'print $2 if /(\w+) there (\w+)/'
how

Following will print one word before the pattern , then the actual word and then one word after the pattern:

echo hey there how are you |perl -lne 'print "$1$2$3" if /(\w+)( there )(\w+)/'
hey there how

First of all, install the prerequisite libraries:

sudo apt-get update
sudo apt-get install git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev python-software-properties libffi-dev

Then install rbenv, which is used to install Ruby:

cd
git clone https://github.com/rbenv/rbenv.git ~/.rbenv
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc
echo 'eval "$(rbenv init -)"' >> ~/.bashrc
exec $SHELL

git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build
echo 'export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH"' >> ~/.bashrc
exec $SHELL

rbenv install 2.3.1
rbenv global 2.3.1
ruby -v

Then (optional) tell Rubygems to not install local documentation:

echo "gem: --no-ri --no-rdoc" > ~/.gemrc

Credits: https://gorails.com/setup/ubuntu/14.10

Warning!!! There are issues with Gnome-Shell. See comment below.

Added KOTLIN version with Mathematical Explanation

Consider we have a scale between (OMin, Omax) and we we have a value X in this range

We want to convert it to scale (NMin, NMax)

We know X and we need to find Y, the ratio must be same:

 => (Y-NMin)/(NMax-NMin) = (X-OMin)/(OMax-OMin)  
      
 =>  (Y-NMin)/NewRange = (X-OMin)/OldRange 

 =>   Y = ((X-OMin)*NewRange)/oldRange)+NMin  Answer
   

Pragmatically we can write this rquation like this:

 private fun  convertScale(oldValueToConvert:Int): Float {
       // Old Scale 50-100
       val oldScaleMin = 50
       val oldScaleMax = 100
       val oldScaleRange= (oldScaleMax - oldScaleMin)

       //new Scale 0-1
       val newScaleMin = 0.0f
       val newScaleMax = 1.0f
       val newScaleRange=  (newScaleMax - newScaleMin)
     
       return ((oldValueToConvert - oldScaleMin)* newScaleRange/ oldScaleRange) + newScaleMin
    }

JAVA

/**
     * 
     * @param x
     * @param inMin
     * @param inMax
     * @param outMin
     * @param outMax
     * @return
     */
        private long normalize(long x, long inMin, long inMax, long outMin, long outMax) {
          long outRange = outMax - outMin;
          long inRange  = inMax - inMin;
          return (x - inMin) *outRange / inRange + outMin;
        }

Usage:

float brightness = normalize(progress, 0, 10, 0,255);

UPDATE: Check out AngularUI's new project to address this problem

For subsections it's as easy as leveraging strings in ng-include:

<ul id="subNav">
  <li><a ng-click="subPage='section1/subpage1.htm'">Sub Page 1</a></li>
  <li><a ng-click="subPage='section1/subpage2.htm'">Sub Page 2</a></li>
  <li><a ng-click="subPage='section1/subpage3.htm'">Sub Page 3</a></li>
</ul>
<ng-include src="subPage"></ng-include>

Or you can create an object in case you have links to sub pages all over the place:

$scope.pages = { page1: 'section1/subpage1.htm', ... };

<ul id="subNav">
  <li><a ng-click="subPage='page1'">Sub Page 1</a></li>
  <li><a ng-click="subPage='page2'">Sub Page 2</a></li>
  <li><a ng-click="subPage='page3'">Sub Page 3</a></li>
</ul>
<ng-include src="pages[subPage]"></ng-include>

Or you can even use $routeParams

$routeProvider.when('/home', ...);
$routeProvider.when('/home/:tab', ...);
$scope.params = $routeParams;

<ul id="subNav">
  <li><a href="#/home/tab1">Sub Page 1</a></li>
  <li><a href="#/home/tab2">Sub Page 2</a></li>
  <li><a href="#/home/tab3">Sub Page 3</a></li>
</ul>
<ng-include src=" '/home/' + tab + '.html' "></ng-include>

You can also put an ng-controller at the top-most level of each partial

For me this is the best way:

<form id="myForm">
  First name: <input type="text" name="fname"><br>
  Last name: <input type="text" name="lname"><br><br>
  <input type="button" onclick="myFunction()" value="Reset form">
</form>

<script>
function myFunction() {
    document.getElementById("myForm").reset();
}
</script>

I ended up using this code:

public void setMaximized(boolean maximized){
    if(maximized){
        DisplayMode mode = this.getGraphicsConfiguration().getDevice().getDisplayMode();
        Insets insets = Toolkit.getDefaultToolkit().getScreenInsets(this.getGraphicsConfiguration());
        this.setMaximizedBounds(new Rectangle(
                mode.getWidth() - insets.right - insets.left, 
                mode.getHeight() - insets.top - insets.bottom
        ));
        this.setExtendedState(this.getExtendedState() | JFrame.MAXIMIZED_BOTH);
    }else{
        this.setExtendedState(JFrame.NORMAL);
    }
}

This options worked the best of all the options, including multiple monitor support. The only flaw this has is that the taskbar offset is used on all monitors is some configurations.

There could be many reasons, but the most common are:

1. The port is not open on the destination machine.

2. The port is open on the destination machine, but its backlog of pending connections is full.

3. A firewall between the client and server is blocking access (also check local firewalls).

After checking for firewalls and that the port is open, use telnet to connect to the ip/port to test connectivity. This removes any potential issues from your application.

Adding -webkit-transform: translate3d(0,0,0) to an element statically doesn't work for me.

I apply this property dynamically. For example, when a page is scrolled, I set -webkit-transform: translate3d(0,0,0) on a element. Then after a short delay, I reset this property, that is, -webkit-transform: none This approach seems to work.

Thank you, @Colin Williams for pointing me in the right direction.

If you are catching an exception type, you do not need to throw it, unless you are going to rethrow it. In the example you post, the developer should have done one or another, not both.

Typically, if you are not going to do anything with the exception, you should not catch it.

The most dangerous thing you can do is catch an exception and not do anything with it.

A good discussion of when it is appropriate to throw exceptions is here

When to throw an exception?

The accepted answer didn't work for me but the following did:

>PsExec.exe \\<SERVER FQDN> -u <DOMAIN\USER> -p <PASSWORD> /accepteula cmd 
    /c "powershell -noninteractive -command gci c:\"

Example from here

On Firefox 78 use this ("keypress" doesn't work for Escape key):

function keyPress (e)(){
  if (e.key == "Escape"){
     //do something here      
  }
document.addEventListener("keyup", keyPress);

How about ioreg? The output's much more detailed than the profiler, but it's a bit dense.

Source: https://lists.macosforge.org/pipermail/macports-users/2008-July/011115.html

1. In {workspace-directory}/.metadata/.plugins/org.eclipse.core.runtime/.settings delete the following two files:

   • org.eclipse.wst.server.core.prefs
   • org.eclipse.jst.server.tomcat.core.prefs

2. Restart Eclipse

If you think you'll be using more than 1 db for any reason, go with the variable because you'll be able to change one parameter to switch to an entirely different db. I.e. for testing , autobackup, etc.

A simple solution would be setting export Lang=C in your bash script. I had a similar issue where the default language was german so it reverted back to english.

yeah, but as @supersan stated upper in a comment, if you delete() on a QueryBuilder, the model event will not be fired, because we are not loading the model itself, then calling delete() on that model.

The events are fired only if we use the delete function on a Model Instance.

So, this beeing said:

if user->hasMany(post)
and if post->hasMany(tags)

in order to delete the post tags when deleting the user, we would have to iterate over $user->posts and calling $post->delete()

foreach($user->posts as $post) { $post->delete(); } -> this will fire the deleting event on Post

VS

$user->posts()->delete() -> this will not fire the deleting event on post because we do not actually load the Post Model (we only run a SQL like: DELETE * from posts where user_id = $user->id and thus, the Post model is not even loaded)

This turned out to be a very useful thread.

For those who are allergic to curly braces, here is the VB.NET version of Lucas' and Crake's answers:

Public Module ActionImage
    <System.Runtime.CompilerServices.Extension()>
    Function ActionImage(html As HtmlHelper, Action As String, RouteValues As Object, ImagePath As String, AltText As String) As MvcHtmlString

        Dim url = New UrlHelper(html.ViewContext.RequestContext)

        Dim imgHtml As String
        'Build the <img> tag
        Dim imgBuilder = New TagBuilder("img")
        With imgBuilder
            .MergeAttribute("src", url.Content(ImagePath))
            .MergeAttribute("alt", AltText)
            imgHtml = .ToString(TagRenderMode.Normal)
        End With

        Dim aHtml As String
        'Build the <a> tag
        Dim aBuilder = New TagBuilder("a")
        With aBuilder
            .MergeAttribute("href", url.Action(Action, RouteValues))
            .InnerHtml = imgHtml 'Include the <img> tag inside
            aHtml = aBuilder.ToString(TagRenderMode.Normal)
        End With

        Return MvcHtmlString.Create(aHtml)

    End Function

    <Extension()>
    Function ActionImage(html As HtmlHelper, Action As String, Controller As String, RouteValues As Object, ImagePath As String, AltText As String) As MvcHtmlString

        Dim url = New UrlHelper(html.ViewContext.RequestContext)

        Dim imgHtml As String
        'Build the <img> tag
        Dim imgBuilder = New TagBuilder("img")
        With imgBuilder
            .MergeAttribute("src", url.Content(ImagePath))
            .MergeAttribute("alt", AltText)
            imgHtml = .ToString(TagRenderMode.Normal)
        End With

        Dim aHtml As String
        'Build the <a> tag
        Dim aBuilder = New TagBuilder("a")
        With aBuilder
            .MergeAttribute("href", url.Action(Action, Controller, RouteValues))
            .InnerHtml = imgHtml 'Include the <img> tag inside
            aHtml = aBuilder.ToString(TagRenderMode.Normal)
        End With

        Return MvcHtmlString.Create(aHtml)

    End Function

End Module

HTML

<div id="wrapper">
    <div id="nav"></div>
    <div id="content"></div>      
    <div class="clearFloat"></div>
</div>

CSS

.clearFloat {
    font-size: 0px;
    line-height: 0px;
    margin: 0px;
    padding: 0px;
    clear: both;
    height: 0px;
}

use implode(',', $array); for output as apple,banana,orange

Or

foreach($array as $key => $value)
{
   echo $key." is ". $value;
}

Add this dependency in build.gradle

compile 'com.google.android.gms:play-services:6.5.87'

Now this works

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <fragment
        android:id="@+id/map"
        android:name="com.google.android.gms.maps.MapFragment"
        android:layout_width="match_parent"
        android:layout_height="388dp"
        android:layout_weight="0.40" />
</LinearLayout>

Oddly. but in my experience TeamViewer is not faster/more responsive than VNC, only easier to setup. I have a couple of win-boxen that I VNC over OpenVPN into (so there is another overhead layer) and that's on cheap Cable (512 up) and I find properly setup TightVNC to be much more responsive than TeamViewer to same boxen. RDP (naturally) even more so since by large part it sends GUI draw commands instead of bitmap tiles.

Which brings us to:

1. Why are you not using VNC? There are plethora of open source solutions, and Tight is probably on top of it's game right now.

2. Advanced VNC implementations use lossy compression and that seems to achieve better results than your choice of PNG. Also, IIRC the rest of the payload is also squashed using zlib. Bothj Tight and UltraVNC have very optimized algos, especially for windows. On top of that Tight is open-source.

3. If win boxen are your primary target RDP may be a better option, and has an opensource implementation (rdesktop)

4. If *nix boxen are your primary target NX may be a better option and has an open source implementation (FreeNX, albeit not as optimised as NoMachine's proprietary product).

If compressing JPEG is a performance issue for your algo, I'm pretty sure that image comparison would still take away some performance. I'd bet they use best-case compression for every specific situation ie lossy for large frames, some quick and dirty internall losless for smaller ones, compare bits of images and send only diffs of sort and bunch of other optimisation tricks.

And a lot of those tricks must be present in Tight > 2.0 since again, in my experience it beats the hell out of TeamViewer performance wyse, YMMV.

Also the choice of a JIT compiled runtime over something like C++ might take a slice from your performance edge, especially in memory constrained machines (a lot of performance tuning goes to the toilet when windows start using the pagefile intensively). And you will need memory to keep previous image states for internal comparison atop of what DF mirage gives you.

I think I got it at last by doing some manual transformations with the data before visualization:

d <- diamonds
# computing logarithm of prices
d$price <- log10(d$price)

And work out a formatter to later compute 'back' the logarithmic data:

formatBack <- function(x) 10^x 
# or with special formatter (here: "dollar")
formatBack <- function(x) paste(round(10^x, 2), "$", sep=' ') 

And draw the plot with given formatter:

m <- ggplot(d, aes(y = price, x = color))
m + geom_boxplot() + scale_y_continuous(formatter='formatBack')

Sorry to the community to bother you with a question I could have solved before! The funny part is: I was working hard to make this plot work a month ago but did not succeed. After asking here, I got it.

Anyway, thanks to @DWin for motivation!

This is the simplest wat to get the File object to which a certain URL object is pointing at:

File file=new File(url.toURI());

Now, for your concrete questions:

• finding all resources in the META-INF "directory":

You can indeed get the File object pointing to this URL

Enumeration<URL> en=getClass().getClassLoader().getResources("META-INF");
if (en.hasMoreElements()) {
    URL metaInf=en.nextElement();
    File fileMetaInf=new File(metaInf.toURI());

    File[] files=fileMetaInf.listFiles();
    //or 
    String[] filenames=fileMetaInf.list();
}

• all resources named bla.xml (recursivly)

In this case, you'll have to do some custom code. Here is a dummy example:

final List<File> foundFiles=new ArrayList<File>();

FileFilter customFilter=new FileFilter() {
    @Override
    public boolean accept(File pathname) {

        if(pathname.isDirectory()) {
            pathname.listFiles(this);
        }
        if(pathname.getName().endsWith("bla.xml")) {
            foundFiles.add(pathname);
            return true;
        }
        return false;
    }

};      
//rootFolder here represents a File Object pointing the root forlder of your search 
rootFolder.listFiles(customFilter);

When the code is run, you'll get all the found ocurrences at the foundFiles List.

This tutorial should help you:

Getting Started with Oracle SQL Developer

See the prerequisites:

1. Install Oracle SQL Developer. You already have it.
2. Install the Oracle Database. Download available here.

3. Unlock the HR user. Login to SQL*Plus as the SYS user and execute the following command:

   alter user hr identified by hr account unlock;

4. Download and unzip the sqldev_mngdb.zip file that contains all the files you need to perform this tutorial.

Another version from May 2011: Getting Started with Oracle SQL Developer

For more info check this related question:

How to create a new database after initally installing oracle database 11g Express Edition?

I cannot get a match using Xpather, but the following worked for me with plain XML and XSL files in Microsoft's XML Notepad:

<xsl:value-of select="count(//td[text()='&nbsp;'])" />

The value returned is 1, which is the correct value in my test case.

However, I did have to declare nbsp as an entity within my XML and XSL using the following:

<!DOCTYPE xsl:stylesheet [ <!ENTITY nbsp "&#160;"> ]>

I'm not sure if that helps you, but I was able to actually find nbsp using an XPath expression.

Edit: My code sample actually contains the characters ' ' but the JavaScript syntax highlight converts it to the space character. Don't be mislead!

$arr = [
  [
    'ID' => 1
  ]
];

echo array_search(1, array_column($arr, 'ID')); // prints 0 (!== false)

Above code echoes the index of the matching element, or false if none.

To get the corresponding element, do something like:

$i = array_search(1, array_column($arr, 'ID'));
$element = ($i !== false ? $arr[$i] : null);

array_column works both on an array of arrays, and on an array of objects.

Both pandas and matplotlib.dates use matplotlib.units for locating the ticks.

But while matplotlib.dates has convenient ways to set the ticks manually, pandas seems to have the focus on auto formatting so far (you can have a look at the code for date conversion and formatting in pandas).

So for the moment it seems more reasonable to use matplotlib.dates (as mentioned by @BrenBarn in his comment).

import numpy as np
import pandas as pd
import matplotlib.pyplot as plt 
import matplotlib.dates as dates

idx = pd.date_range('2011-05-01', '2011-07-01')
s = pd.Series(np.random.randn(len(idx)), index=idx)

fig, ax = plt.subplots()
ax.plot_date(idx.to_pydatetime(), s, 'v-')
ax.xaxis.set_minor_locator(dates.WeekdayLocator(byweekday=(1),
                                                interval=1))
ax.xaxis.set_minor_formatter(dates.DateFormatter('%d\n%a'))
ax.xaxis.grid(True, which="minor")
ax.yaxis.grid()
ax.xaxis.set_major_locator(dates.MonthLocator())
ax.xaxis.set_major_formatter(dates.DateFormatter('\n\n\n%b\n%Y'))
plt.tight_layout()
plt.show()

(my locale is German, so that Tuesday [Tue] becomes Dienstag [Di])

Generally speaking, the fact that a function which iterates over an object works on strings as well as tuples and lists is more feature than bug. You certainly can use isinstance or duck typing to check an argument, but why should you?

That sounds like a rhetorical question, but it isn't. The answer to "why should I check the argument's type?" is probably going to suggest a solution to the real problem, not the perceived problem. Why is it a bug when a string is passed to the function? Also: if it's a bug when a string is passed to this function, is it also a bug if some other non-list/tuple iterable is passed to it? Why, or why not?

I think that the most common answer to the question is likely to be that developers who write f("abc") are expecting the function to behave as though they'd written f(["abc"]). There are probably circumstances where it makes more sense to protect developers from themselves than it does to support the use case of iterating across the characters in a string. But I'd think long and hard about it first.

you can use class with static methods that return an instance of that class

    class MyClass {
        constructor(a,b,c,d){
            this.a = a
            this.b = b
            this.c = c
            this.d = d
        }
        static BAndCInstance(b,c){
            return new MyClass(null,b,c)
        }
        static BAndDInstance(b,d){
            return new MyClass(null,b, null,d)
        }
    }

    //new Instance just with a and other is nul this can
    //use for other params that are first in constructor
    const myclass=new MyClass(a)

    //an Instance that has b and c params
    const instanceWithBAndC = MyClass.BAndCInstance(b,c)

    //another example for b and d
    const instanceWithBAndD = MyClass.BAndDInstance(b,d)

with this pattern you can create multi constructor

Try this simple JQuery:

$('#select-all').click(function(event) {
  if (this.checked) {
    $(':checkbox').prop('checked', true);
  } else {
    $(':checkbox').prop('checked', false);
  }
});

I based this on @asawyer's answer. He doesn't seem to get a compile error, but some of us do. Here is a version which the C# compiler in Visual Studio 2010 will accept.

var timer = new System.Threading.Timer(
    e => MyMethod(),  
    null, 
    TimeSpan.Zero, 
    TimeSpan.FromMinutes(5));

Select a range of cells (the entire column in this case), type in your formula, and hold down Ctrl while you press Enter. This places the formula in all selected cells.

const char* charPointer = "Hello, World!\n";
std::string strFromChar;
strFromChar.append(charPointer);
std::cout<<strFromChar<<std::endl;

Use break and continue to do this. Breaking nested loops can be done in Python using the following:

for a in range(...):
   for b in range(..):
      if some condition:
         # break the inner loop
         break
   else:
      # will be called if the previous loop did not end with a `break` 
      continue
   # but here we end up right after breaking the inner loop, so we can
   # simply break the outer loop as well
   break

Another way is to wrap everything in a function and use return to escape from the loop.

WARNING: There are reports that this will not work on iOS 6. This might only work on older versions of the OS. Evidently at least one dev has had their app rejected for using this trick (see the comments). Use at your own risk. Using an image (see answer above) might be a safer solution.

This can be done without adding in your own image files using sekr1t button type 101 to get the correct shape. For me the trick was figuring out that I could use initWithCustomView to create the BarButtonItem. I personally needed this for a dynamic navbar rather than a toolbar, but I tested it with a toolbar and the code is nearly the same:

// create button
UIButton* backButton = [UIButton buttonWithType:101]; // left-pointing shape!
[backButton addTarget:self action:@selector(backAction) forControlEvents:UIControlEventTouchUpInside];
[backButton setTitle:@"Back" forState:UIControlStateNormal];

// create button item -- possible because UIButton subclasses UIView!
UIBarButtonItem* backItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];

// add to toolbar, or to a navbar (you should only have one of these!)
[toolbar setItems:[NSArray arrayWithObject:backItem]];
navItem.leftBarButtonItem = backItem;

If you're doing this on a toolbar you'll have to tweak how you set the items, but that depends on the rest of your code and I leave that as an exercise for the reader. :P This sample worked for me (compiled & run).

Blah blah, read the HIG, don't use undocumented features, and all that. There's only six supported button types and this isn't one of them.

If you want to detect the status of navigation bar wether it is hidden/shown. You can simply use following code to detect -

if self.navigationController?.isNavigationBarHidden{
    print("Show navigation bar")
} else {
    print("hide navigation bar")
}

<?php if ($my_name == 'aboutme') { ?>
    HTML_GOES_HERE
<?php } ?>

Either one of the below three options gets rid of the message (but for different reasons and with different side-effects I suppose):

1. exclude the node_modules directory or explicitly include the directory where your app resides (which presumably does not contain files in excess of 100KB)
2. set the Babel option compact to true (actually any value other than "auto")
3. set the Babel option compact to false (see above)

#1 in the above list can be achieved by either excluding the node_modules directory or be explicitly including the directory where your app resides.

E.g. in webpack.config.js:

let path = require('path');
....
module: {
     loaders: [
          ...
          loader: 'babel',
          exclude: path.resolve(__dirname, 'node_modules/')

... or by using include: path.resolve(__dirname, 'app/') (again in webpack.config.js).

#2 and #3 in the above list can be accomplished by the method suggested in this answer or (my preference) by editing the .babelrc file. E.g.:

$ cat .babelrc 
{
    "presets": ["es2015", "react"],
    "compact" : true
}

Tested with the following setup:

$ npm ls --depth 0 | grep babel
+-- [email protected]
+-- [email protected]
+-- [email protected]
+-- [email protected]

Use application/javascript as content type instead of text/javascript

text/javascript is mentioned obsolete. See reference docs.

http://www.iana.org/assignments/media-types/application

Also see this question on SO.

UPDATE:

I have tried executing the code you have given and the below didn't work.

res.setHeader('content-type', 'text/javascript');
res.send(JS_Script);

This is what worked for me.

res.setHeader('content-type', 'text/javascript');
res.end(JS_Script);

As robertklep has suggested, please refer to the node http docs, there is no response.send() there.

You can accomplish this using the function FILL to create filled polygons under the sections of your plots. You will want to plot the lines and polygons in the order you want them to be stacked on the screen, starting with the bottom-most one. Here's an example with some sample data:

x = 1:100;             %# X range
y1 = rand(1,100)+1.5;  %# One set of data ranging from 1.5 to 2.5
y2 = rand(1,100)+0.5;  %# Another set of data ranging from 0.5 to 1.5
baseLine = 0.2;        %# Baseline value for filling under the curves
index = 30:70;         %# Indices of points to fill under

plot(x,y1,'b');                              %# Plot the first line
hold on;                                     %# Add to the plot
h1 = fill(x(index([1 1:end end])),...        %# Plot the first filled polygon
          [baseLine y1(index) baseLine],...
          'b','EdgeColor','none');
plot(x,y2,'g');                              %# Plot the second line
h2 = fill(x(index([1 1:end end])),...        %# Plot the second filled polygon
          [baseLine y2(index) baseLine],...
          'g','EdgeColor','none');
plot(x(index),baseLine.*ones(size(index)),'r');  %# Plot the red line

And here's the resulting figure:

You can also change the stacking order of the objects in the figure after you've plotted them by modifying the order of handles in the 'Children' property of the axes object. For example, this code reverses the stacking order, hiding the green polygon behind the blue polygon:

kids = get(gca,'Children');        %# Get the child object handles
set(gca,'Children',flipud(kids));  %# Set them to the reverse order

Finally, if you don't know exactly what order you want to stack your polygons ahead of time (i.e. either one could be the smaller polygon, which you probably want on top), then you could adjust the 'FaceAlpha' property so that one or both polygons will appear partially transparent and show the other beneath it. For example, the following will make the green polygon partially transparent:

set(h2,'FaceAlpha',0.5);

"System tray" application is just a regular win forms application, only difference is that it creates a icon in windows system tray area. In order to create sys.tray icon use NotifyIcon component , you can find it in Toolbox(Common controls), and modify it's properties: Icon, tool tip. Also it enables you to handle mouse click and double click messages.

And One more thing , in order to achieve look and feels or standard tray app. add followinf lines on your main form show event:

private void MainForm_Shown(object sender, EventArgs e)
{
    WindowState = FormWindowState.Minimized;
    Hide();
} 

I think you should cast the pointers to (void *) to get rid of the warnings.

memcpy((void *)&RTCclk, (void *)&RTCclkBuffert, sizeof RTCclk);

Also you have use sizeof without brackets, you can use this with variables but if RTCclk was defined as an array, sizeof of will return full size of the array. If you use use sizeof with type you should use with brackets.

sizeof(struct RTCclk)

Primitive data type

The primitive data type is a basic type provided by a programming language as a basic building block. So it's predefined data types. A primitive type has always a value. It storing simple value.

It specifies the size and type of variable values, so the size of a primitive type depends on the data type and it has no additional methods.

And these are reserved keywords in the language. So we can't use these names as variable, class or method name. A primitive type starts with a lowercase letter. When declaring the primitive types we don't need to allocate memory. (memory is allocated and released by JRE-Java Runtime Environment in Java)

8 primitive data types in Java

+================+=========+===================================================================================+
| Primitive type | Size    | Description                                                                       |
+================+=========+===================================================================================+
| byte           | 1 byte  | Stores whole numbers from -128 to 127                                             |
+----------------+---------+-----------------------------------------------------------------------------------+
| short          | 2 bytes | Stores whole numbers from -32,768 to 32,767                                       |
+----------------+---------+-----------------------------------------------------------------------------------+
| int            | 4 bytes | Stores whole numbers from -2,147,483,648 to 2,147,483,647                         |
+----------------+---------+-----------------------------------------------------------------------------------+
| long           | 8 bytes | Stores whole numbers from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 |
+----------------+---------+-----------------------------------------------------------------------------------+
| float          | 4 bytes | Stores fractional numbers. Sufficient for storing 6 to 7 decimal digits           |
+----------------+---------+-----------------------------------------------------------------------------------+
| double         | 8 bytes | Stores fractional numbers. Sufficient for storing 15 decimal digits               |
+----------------+---------+-----------------------------------------------------------------------------------+
| char           | 2 bytes | Stores a single character/letter or ASCII values                                  |
+----------------+---------+-----------------------------------------------------------------------------------+
| boolean        | 1 bit   | Stores true or false values                                                       |
+----------------+---------+-----------------------------------------------------------------------------------+

Reference data type

Reference data type refers to objects. Most of these types are not defined by programming language(except for String, arrays in JAVA). Reference types of value can be null. It storing an address of the object it refers to. Reference or non-primitive data types have all the same size. and reference types can be used to call methods to perform certain operations.

when declaring the reference type need to allocate memory. In Java, we used new keyword to allocate memory, or alternatively, call a factory method.

Example:

List< String > strings = new ArrayList<>() ;  // Calling `new`  to instantiate an object and thereby allocate memory.

Point point = Point(1,2) ;           // Calling a factory method.

Relative paths can be best understood if you know how Java runs the program.

There is a concept of working directory when running programs in Java. Assuming you have a class, say, FileHelper that does the IO under /User/home/Desktop/projectRoot/src/topLevelPackage/.

Depending on the case where you invoke java to run the program, you will have different working directory. If you run your program from within and IDE, it will most probably be projectRoot.

• In this case $ projectRoot/src : java topLevelPackage.FileHelper it will be src.

• In this case $ projectRoot : java -cp src topLevelPackage.FileHelper it will be projectRoot.

• In this case $ /User/home/Desktop : java -cp ./projectRoot/src topLevelPackage.FileHelper it will be Desktop.

(Assuming $ is your command prompt with standard Unix-like FileSystem. Similar correspondence/parallels with Windows system)

So, your relative path root (.) resolves to your working directory. Thus to be better sure of where to write files, it's said to consider below approach.

package topLevelPackage

import java.io.File;
import java.nio.file.Path;
import java.nio.file.Paths;

public class FileHelper {

    // Not full implementation, just barebone stub for path
    public void createLocalFile() {

        // Explicitly get hold of working directory
        String workingDir = System.getProperty("user.dir");

        Path filePath = Paths.get(workingDir+File.separator+"sampleFile.txt");

        // In case we need specific path, traverse that path, rather using . or .. 
        Path pathToProjectRoot = Paths.get(System.getProperty("user.home"), "Desktop", "projectRoot");

        System.out.println(filePath);
        System.out.println(pathToProjectRoot);

    }
}

Hope this helps.

There are different approaches. If you want to do this from remote, issue flushall to that instance, through command line tool redis-cli or whatever tools i.e. telnet, a programming language SDK. Or just log in that server, kill the process, delete its dump.rdb file and appendonly.aof(backup them before deletion).

As of August 4 2015, the native facebook like box have a responsive code snippet available at Facebook Developers page.

You can generate your responsive Facebook likebox here

https://developers.facebook.com/docs/plugins/page-plugin

This is the best solution ever rather than hacking CSS.

You can focus on a split window using # ctrl-ww.

for example, pressing:

1 ctrl-ww

would focus on the first window, usually being NERDTree.

Should it be LIBRARY_PATH instead of LD_LIBRARY_PATH. gcc checks for LIBRARY_PATH which can be seen with -v option

I use chromium but I have created a shell script called chrome just to be easy for me to open the browser from dmenu.

#!/bin/bash

/usr/bin/chromium

Chrome driver looking for chrome in PATH and executes that. In result I got the same error.

org.openqa.selenium.WebDriverException: unknown error: Chrome failed to start: exited normally.
  (unknown error: DevToolsActivePort file doesn't exist)
  (The process started from chrome location /home/s1n7ax/.local/share/s1n7ax/bin/chrome is no longer running, so ChromeDriver is assuming that Chrome has crashed.)
Build info: version: '3.141.59', revision: 'e82be7d358', time: '2018-11-14T08:17:03'
System info: host: 's1n7ax', ip: '127.0.1.16', os.name: 'Linux', os.arch: 'amd64', os.version: '5.4.70-1-lts', java.version: '11.0.8'
Driver info: driver.version: ChromeDriver
remote stacktrace: #0 0x56030c96dd99 <unknown>

I just removed the shell script and added a soft link to chromium. Everything working now.

Alternatively, try removing "data" and making the URL "logtime.php?userID="+userId

I like Brian's answer better, this answer is just because you're trying to use URL parameter syntax in "data" and I wanted to demonstrate where you can use that syntax correctly.

So - the solution of providing a base works given that all of the paths have the same base path. But if you want to provide different base paths, this still won't work.

One way I solved this problem was by making the beginning of the path relative. For your case:

gulp.src([
    'index.php',
    '*css/**/*',
    '*js/**/*',
    '*src/**/*',
])
.pipe(gulp.dest('/var/www/'));

The reason this works is that Gulp sets the base to be the end of the first explicit chunk - the leading * causes it to set the base at the cwd (which is the result that we all want!)

This only works if you can ensure your folder structure won't have certain paths that could match twice. For example, if you had randomjs/ at the same level as js, you would end up matching both.

This is the only way that I have found to include these as part of a top-level gulp.src function. It would likely be simple to create a plugin/function that could separate out each of those globs so you could specify the base directory for them, however.

If you are using JetBrains editors like IntelliJ IDEA, PhpStorm, WebStorm etc. Use the following settings in Settings > File Watchers.

1. Convert style.scss to style.css set the arguments

   --no-cache --update $FileName$:$FileNameWithoutExtension$.css
   

   and output paths to refresh

   $FileNameWithoutExtension$.css
   

2. Convert style.scss to compressed style.min.css set the arguments

   --no-cache --update $FileName$:$FileNameWithoutExtension$.min.css --style compressed
   

   and output paths to refresh

   $FileNameWithoutExtension$.min.css
   

According to Github API two empty lines are a new paragraph (same as here in stackoverflow)

You can test it with http://prose.io

This is exactly what you want. Try this:

{{ wpis.entry.lastChangeDate|date:'Y-m-d H:i' }}

Note that if you want a multi line text box you have to use a <textarea> instead of an <input type="text">.

1. Allocates some dynamic memory from the free store, and creates an object in that memory using its default constructor. You never delete it, so the memory is leaked.
2. Does exactly the same as 1; in the case of user-defined types, the parentheses are optional.
3. Allocates some automatic memory, and creates an object in that memory using its default constructor. The memory is released automatically when the object goes out of scope.
4. Similar to 3. Notionally, the named object foo4 is initialised by default-constructing, copying and destroying a temporary object; usually, this is elided giving the same result as 3.
5. Allocates a dynamic object, then initialises a second by copying the first. Both objects are leaked; and there's no way to delete the first since you don't keep a pointer to it.
6. Does exactly the same as 5.
7. Does not compile. Foo foo5 is a declaration, not an expression; function (and constructor) arguments must be expressions.
8. Creates a temporary object, and initialises a dynamic object by copying it. Only the dynamic object is leaked; the temporary is destroyed automatically at the end of the full expression. Note that you can create the temporary with just Foo() rather than the equivalent Foo::Foo() (or indeed Foo::Foo::Foo::Foo::Foo())

When do I use each?

1. Don't, unless you like unnecessary decorations on your code.
2. When you want to create an object that outlives the current scope. Remember to delete it when you've finished with it, and learn how to use smart pointers to control the lifetime more conveniently.
3. When you want an object that only exists in the current scope.
4. Don't, unless you think 3 looks boring and what to add some unnecessary decoration.
5. Don't, because it leaks memory with no chance of recovery.
6. Don't, because it leaks memory with no chance of recovery.
7. Don't, because it won't compile
8. When you want to create a dynamic Bar from a temporary Foo.

Guid? myGuidVar = (Guid?)null;

It could be. Unnecessary casting not required.

Guid? myGuidVar = null;

It depends on how much content your website has. At first I used a database like all other people here, but it can be time-consuming to script all the workings of a database. I don't say that this is an ideal method and especially if you have a lot of text, but if you want to do it fast without using a database, this method could work, though, you can't allow users to input data which will be used as translation-files. But if you add the translations yourself, it will work:

Let's say you have this text:

Welcome!

You can input this in a database with translations, but you can also do this:

$welcome = array(
"English"=>"Welcome!",
"German"=>"Willkommen!",
"French"=>"Bienvenue!",
"Turkish"=>"Hosgeldiniz!",
"Russian"=>"????? ??????????!",
"Dutch"=>"Welkom!",
"Swedish"=>"Välkommen!",
"Basque"=>"Ongietorri!",
"Spanish"=>"Bienvenito!"
"Welsh"=>"Croeso!");

Now, if your website uses a cookie, you have this for example:

$_COOKIE['language'];

To make it easy let's transform it in a code which can easily be used:

$language=$_COOKIE['language'];

If your cookie language is Welsh and you have this piece of code:

echo $welcome[$language];

The result of this will be:

Croeso!

If you need to add a lot of translations for your website and a database is too consuming, using an array can be an ideal solution.

Here's a controversial option:

String.prototype.includesOneOf = function(arrayOfStrings) {
  if(!Array.isArray(arrayOfStrings)) {
    throw new Error('includesOneOf only accepts an array')
  }
  return arrayOfStrings.some(str => this.includes(str))
}

Allowing you to do things like:

'Hi, hope you like this option'.toLowerCase().includesOneOf(["hello", "hi", "howdy"]) // True

Since SHA-1 maps several byte sequences to one, you can't "decrypt" a hash, but in theory you can find collisions: strings that have the same hash.

It seems that breaking a single hash would cost about 2.7 million dollars worth of computer time currently, so your efforts are probably better spent somewhere else.

Try formatting the link like this (looks hellish, but it works in Firefox 3 under Vista for me) :

<a href="file://///SERVER/directory/file.ext">file.ext</a>

As explained here, you can use:

function replaceall(str,replace,with_this)
{
    var str_hasil ="";
    var temp;

    for(var i=0;i<str.length;i++) // not need to be equal. it causes the last change: undefined..
    {
        if (str[i] == replace)
        {
            temp = with_this;
        }
        else
        {
                temp = str[i];
        }

        str_hasil += temp;
    }

    return str_hasil;
}

... which you can then call using:

var str = "50.000.000";
alert(replaceall(str,'.',''));

The function will alert "50000000"

Not 100% sure about the relationship between these two entities but here goes:

IList<Splitting> res = (from s in [data source]
                        where s.Customer.CompanyID == [companyID] &&
                              s.CustomerID == [customerID]
                        select s).ToList();

IList<Splitting> res = [data source].Splittings.Where(
                           x => x.Customer.CompanyID == [companyID] &&
                                x.CustomerID == [customerID]).ToList();

As per the documentation: This allows you to switch from the default ASCII to other encodings such as UTF-8, which the Python runtime will use whenever it has to decode a string buffer to unicode.

This function is only available at Python start-up time, when Python scans the environment. It has to be called in a system-wide module, sitecustomize.py, After this module has been evaluated, the setdefaultencoding() function is removed from the sys module.

The only way to actually use it is with a reload hack that brings the attribute back.

Also, the use of sys.setdefaultencoding() has always been discouraged, and it has become a no-op in py3k. The encoding of py3k is hard-wired to "utf-8" and changing it raises an error.

I suggest some pointers for reading:

• http://blog.ianbicking.org/illusive-setdefaultencoding.html
• http://nedbatchelder.com/blog/200401/printing_unicode_from_python.html
• http://www.diveintopython3.net/strings.html#one-ring-to-rule-them-all
• http://boodebr.org/main/python/all-about-python-and-unicode
• http://blog.notdot.net/2010/07/Getting-unicode-right-in-Python

Allocate maximum memory to your docker machine from (docker preference -> advance )

Screenshot of advance settings:

This will set the maximum limit docker consume while running containers. Now run your image in new container with -m=4g flag for 4 gigs ram or more. e.g.

docker run -m=4g {imageID}

Remember to apply the ram limit increase changes. Restart the docker and double check that ram limit did increased. This can be one of the factor you not see the ram limit increase in docker containers.

As other said, bubbling and capturing describe in which order some nested elements receive a given event.

I wanted to point out that for the innermost element may appear something strange. Indeed, in this case the order in which the event listeners are added does matter.

In the following example, capturing for div2 will be executed first than bubbling; while bubbling for div4 will be executed first than capturing.

function addClickListener (msg, num, type) {
  document.querySelector("#div" + num)
    .addEventListener("click", () => alert(msg + num), type);
}
bubble  = (num) => addClickListener("bubble ", num, false);
capture = (num) => addClickListener("capture ", num, true);

// first capture then bubble
capture(1);
capture(2);
bubble(2);
bubble(1);

// try reverse order
bubble(3);
bubble(4);
capture(4);
capture(3);

#div1, #div2, #div3, #div4 {
  border: solid 1px;
  padding: 3px;
  margin: 3px;
}

<div id="div1">
  div 1
  <div id="div2">
    div 2
  </div>
</div>
<div id="div3">
  div 3
  <div id="div4">
    div 4
  </div>
</div>

getArguments() is returning null because "Its doesn't get anything"

Try this code to handle this situation

if(getArguments()!=null)
{
int myInt = getArguments().getInt(key, defaultValue);
}

You can create a countdown timer using applet, below is the code,

   import java.applet.*;
   import java.awt.*;
   import java.awt.event.*;
   import javax.swing.*;
   import javax.swing.Timer; // not java.util.Timer
   import java.text.NumberFormat;
   import java.net.*;



/**
    * An applet that counts down from a specified time. When it reaches 00:00,
    * it optionally plays a sound and optionally moves the browser to a new page.
    * Place the mouse over the applet to pause the count; move it off to resume.
    * This class demonstrates most applet methods and features.
    **/

public class Countdown extends JApplet implements ActionListener, MouseListener
{
long remaining; // How many milliseconds remain in the countdown.
long lastUpdate; // When count was last updated
JLabel label; // Displays the count
Timer timer; // Updates the count every second
NumberFormat format; // Format minutes:seconds with leading zeros
Image image; // Image to display along with the time
AudioClip sound; // Sound to play when we reach 00:00

// Called when the applet is first loaded
public void init() {
    // Figure out how long to count for by reading the "minutes" parameter
    // defined in a <param> tag inside the <applet> tag. Convert to ms.
    String minutes = getParameter("minutes");
    if (minutes != null) remaining = Integer.parseInt(minutes) * 60000;
    else remaining = 600000; // 10 minutes by default

    // Create a JLabel to display remaining time, and set some properties.
    label = new JLabel();
    label.setHorizontalAlignment(SwingConstants.CENTER );
    label.setOpaque(true); // So label draws the background color

    // Read some parameters for this JLabel object
    String font = getParameter("font");
    String foreground = getParameter("foreground");
    String background = getParameter("background");
    String imageURL = getParameter("image");

    // Set label properties based on those parameters
    if (font != null) label.setFont(Font.decode(font));
    if (foreground != null) label.setForeground(Color.decode(foreground));
    if (background != null) label.setBackground(Color.decode(background));
    if (imageURL != null) {
        // Load the image, and save it so we can release it later
        image = getImage(getDocumentBase(), imageURL);
        // Now display the image in the JLabel.
        label.setIcon(new ImageIcon(image));
    }

    // Now add the label to the applet. Like JFrame and JDialog, JApplet
    // has a content pane that you add children to
    getContentPane().add(label, BorderLayout.CENTER);

    // Get an optional AudioClip to play when the count expires
    String soundURL = getParameter("sound");
    if (soundURL != null) sound=getAudioClip(getDocumentBase(), soundURL);

    // Obtain a NumberFormat object to convert number of minutes and
    // seconds to strings. Set it up to produce a leading 0 if necessary
    format = NumberFormat.getNumberInstance();
    format.setMinimumIntegerDigits(2); // pad with 0 if necessary

    // Specify a MouseListener to handle mouse events in the applet.
    // Note that the applet implements this interface itself
    addMouseListener(this);

    // Create a timer to call the actionPerformed() method immediately,
    // and then every 1000 milliseconds. Note we don't start the timer yet.
    timer = new Timer(1000, this);
    timer.setInitialDelay(0); // First timer is immediate.
}

// Free up any resources we hold; called when the applet is done
public void destroy() { if (image != null) image.flush(); }

// The browser calls this to start the applet running
// The resume() method is defined below.
public void start() { resume(); } // Start displaying updates

// The browser calls this to stop the applet. It may be restarted later.
// The pause() method is defined below
public void stop() { pause(); } // Stop displaying updates

// Return information about the applet
public String getAppletInfo() {
    return "Countdown applet Copyright (c) 2003 by David Flanagan";
}

// Return information about the applet parameters
public String[][] getParameterInfo() { return parameterInfo; }

// This is the parameter information. One array of strings for each
// parameter. The elements are parameter name, type, and description.
static String[][] parameterInfo = {
    {"minutes", "number", "time, in minutes, to countdown from"},
    {"font", "font", "optional font for the time display"},
    {"foreground", "color", "optional foreground color for the time"},
    {"background", "color", "optional background color"},
    {"image", "image URL", "optional image to display next to countdown"},
    {"sound", "sound URL", "optional sound to play when we reach 00:00"},
    {"newpage", "document URL", "URL to load when timer expires"},
};

// Start or resume the countdown
void resume() {
    // Restore the time we're counting down from and restart the timer.
    lastUpdate = System.currentTimeMillis();
    timer.start(); // Start the timer
}

// Pause the countdown
void pause() {
    // Subtract elapsed time from the remaining time and stop timing
    long now = System.currentTimeMillis();
    remaining -= (now - lastUpdate);
    timer.stop(); // Stop the timer
}

// Update the displayed time. This method is called from actionPerformed()
// which is itself invoked by the timer.
void updateDisplay() {
    long now = System.currentTimeMillis(); // current time in ms
    long elapsed = now - lastUpdate; // ms elapsed since last update
    remaining -= elapsed; // adjust remaining time
    lastUpdate = now; // remember this update time

    // Convert remaining milliseconds to mm:ss format and display
    if (remaining < 0) remaining = 0;
    int minutes = (int)(remaining/60000);
    int seconds = (int)((remaining)/1000);
    label.setText(format.format(minutes) + ":" + format.format(seconds));

    // If we've completed the countdown beep and display new page
    if (remaining == 0) {
        // Stop updating now.
        timer.stop();
        // If we have an alarm sound clip, play it now.
        if (sound != null) sound.play();
        // If there is a newpage URL specified, make the browser
        // load that page now.
        String newpage = getParameter("newpage");
        if (newpage != null) {
            try {
                URL url = new URL(getDocumentBase(), newpage);
                getAppletContext().showDocument(url);
            }
            catch(MalformedURLException ex) {      showStatus(ex.toString()); }
        }
    }
}

// This method implements the ActionListener interface.
// It is invoked once a second by the Timer object
// and updates the JLabel to display minutes and seconds remaining.
public void actionPerformed(ActionEvent e) { updateDisplay(); }

// The methods below implement the MouseListener interface. We use
// two of them to pause the countdown when the mouse hovers over the timer.
// Note that we also display a message in the statusline
public void mouseEntered(MouseEvent e) {
    pause(); // pause countdown
    showStatus("Paused"); // display statusline message
}
public void mouseExited(MouseEvent e) {
    resume(); // resume countdown
    showStatus(""); // clear statusline
}
// These MouseListener methods are unused.
public void mouseClicked(MouseEvent e) {}
public void mousePressed(MouseEvent e) {}
public void mouseReleased(MouseEvent e) {}
} 

I have just include Maven integration plug-in with Eclipse:

Just follow the bellow steps:

In eclipse, from upper menu item select- Help ->click on Install New Software..-> then click on Add button.

set the MavenAPI at name text box and http://download.eclipse.org/technology/m2e/releases at location text box.

press OK and select the Maven project and install by clicking next.

PyQt4 can be forced to use a new API in which QString is automatically converted to and from a Python object:

import sip
sip.setapi('QString', 2)

With this API, QtCore.QString class is no longer available and self.ui.comboBox.currentText() will return a Python string or unicode object.

See Selecting Incompatible APIs from the doc.

Simple-read but precise solution would be:

func nowAsUnixMilliseconds(){
    return time.Now().Round(time.Millisecond).UnixNano() / 1e6
}

This function:

1. Correctly rounds the value to the nearest millisecond (compare with integer division: it just discards decimal part of the resulting value);
2. Does not dive into Go-specifics of time.Duration coercion — since it uses a numerical constant that represents absolute millisecond/nanosecond divider.

P.S. I've run benchmarks with constant and composite dividers, they showed almost no difference, so feel free to use more readable or more language-strict solution.

The code of JS20'07'11 is really incredible simple and direct. One suggestion that I would like to give is to put a exclamation mark in the conditions:

InStr(1, objName.RefersTo, sWsName+"!", vbTextCompare)

Because this will prevent adding a NamedRange in an incorrect Sheet. Eg: If the NamedRange refers to a Sheet named Plan11 and you have another Sheet named Plan1 the code can do some mess when add the ranges if you don't use the exclamation mark.

UPDATE

A correction: It's best to use a regular expression evaluate the name of the Sheet. A simple function that you can use is the following (adapted by http://blog.malcolmp.com/2010/regular-expressions-excel-add-in, enable Microsoft VBScript Regular Expressions 5.5):

Function xMatch(pattern As String, searchText As String, Optional matchIndex As Integer = 1, Optional ignoreCase As Boolean = True) As String
On Error Resume Next
Dim RegEx As New RegExp
RegEx.Global = True
RegEx.MultiLine = True
RegEx.pattern = pattern
RegEx.ignoreCase = ignoreCase
Dim matches As MatchCollection
Set matches = RegEx.Execute(searchText)
Dim i As Integer
i = 1
For Each Match In matches
    If i = matchIndex Then
        xMatch = Match.Value
    End If
    i = i + 1
Next
End Function

So, You can use something like that:

xMatch("'?" +sWsName + "'?" + "!", objName.RefersTo, 1) <> ""

instead of

InStr(1, objName.RefersTo, sWsName+"!", vbTextCompare)

This will cover Plan1 and 'Plan1' (when the range refers to more than one cell) variations

TIP: Avoid Sheet names with single quotes ('), :) .

Try the onbeforeunload event: It is fired just before the page is unloaded. It also allows you to ask back if the user really wants to leave. See the demo onbeforeunload Demo.

Alternatively, you can send out an Ajax request when he leaves.

Or, instead of setting margin and than overriding it, you can just set it properly right away with the following combo:

span:not(:first-of-type) {
    margin-left:  5px;
}

span:not(:last-of-type) {
    margin-right: 5px;
}

In this case, it's probably because you are using the wrong brackets here:

document.getElementById['calendar'].src = loc;

should be

document.getElementById('calendar').src = loc;

Assuming your code is running inside your parent form, then something like this is probably what you're looking for:

loginForm = new SubLogin();
loginForm.StartPosition = FormStartPosition.CenterParent
loginForm.Show(this);

For the record, there's also a Form.CenterToParent() function, if you need to center it after creation for whatever reason too.

If you want to add 20% or 30% transparency, you should pre-pend two more characters to the hexadecimal code, like CC.

Note

android:background="#CCFF0088" in XML

where CC is the alpha value, FF is the red factor, 00 is the green factor, and 88 is the blue factor.

Some opacity code:

Hex Opacity Values

100% — FF
95% — F2
90% — E6
85% — D9
80% — CC
75% — BF
70% — B3
65% — A6
60% — 99
55% — 8C
50% — 80
45% — 73
40% — 66
35% — 59
30% — 4D
25% — 40
20% — 33
15% — 26
10% — 1A
5%  — 0D
0% —  00

You can also set opacity programmatically like:

yourView.getBackground().setAlpha(127);

Set opacity between 0 (fully transparent) to 255 (completely opaque). The 127.5 is exactly 50%.

You can create any level of transparency using the given formula. If you want half transparent:

 16 |128          Where 128 is the half of 256.
    |8 -0         So it means 80 is half transparent.

And for 25% transparency:

16 |64            Where 64 is the quarter of 256.
   |4 -0          So it means 40 is quarter transparent.

There are a few. I was looking into MBTrading for a friend. I didn't get too far, as my friend lost interest. Seemed relatively straigt forward with a C# and VB.Net SDK. They had some docs and everything. This was ~6 months ago, so it may be better (or worse) by now.

IIRC, you can create a demo account for free. I don't remember all the details, but it let you connect to their test server and pull quotes and make fake trades and such to get your software fine tuned.

Don't know much about cost for an actual account or anything.

Here is an enhancement to vc-74's post that handles commas the same way Excel does. Excel puts quotes around data if the data has a comma but doesn't quote if the data doesn't have a comma.

    public static string ToCsv(this DataTable inDataTable, bool inIncludeHeaders = true)
    {
        var builder = new StringBuilder();
        var columnNames = inDataTable.Columns.Cast<DataColumn>().Select(column => column.ColumnName);
        if (inIncludeHeaders)
            builder.AppendLine(string.Join(",", columnNames));
        foreach (DataRow row in inDataTable.Rows)
        {
            var fields = row.ItemArray.Select(field => field.ToString().WrapInQuotesIfContains(","));
            builder.AppendLine(string.Join(",", fields));
        }

        return builder.ToString();
    }

    public static string WrapInQuotesIfContains(this string inString, string inSearchString)
    {
        if (inString.Contains(inSearchString))
            return "\"" + inString+ "\"";
        return inString;
    }

I hear a lot of people complain the first one is too difficult to understand and that it is unclear. I don't see a problem with it, but after having that discussion, I use the second one even on INNER JOINS for clarity.

When you use a function ...

<p onclick="update_url('/en/step2');">Link</p>

<script>
function update_url(url) {
    history.pushState(null, null, url);
}
</script>

I think what you want is this:

last_list=[]
if p.last_name != None and p.last_name != "":
    last_list.append(p.last_name)
print last_list

Your current if statement:

if p.last_name == None or p.last_name == "":
    pass

Effectively never does anything. If p.last_name is none or the empty string, it does nothing inside the loop. If p.last_name is something else, the body of the if statement is skipped.

Also, it looks like your statement pan_list.append(p.last) is a typo, because I see neither pan_list nor p.last getting used anywhere else in the code you have posted.

It's Quite easy using Google Distance Matrix service

First step is to activate Distance Matrix service from google API console. it returns distances between a set of locations. And apply this simple function

function initMap() {
        var bounds = new google.maps.LatLngBounds;
        var markersArray = [];

        var origin1 = {lat:23.0203, lng: 72.5562};
        //var origin2 = 'Ahmedabad, India';
        var destinationA = {lat:23.0436503, lng: 72.55008939999993};
        //var destinationB = {lat: 23.2156, lng: 72.6369};

        var destinationIcon = 'https://chart.googleapis.com/chart?' +
            'chst=d_map_pin_letter&chld=D|FF0000|000000';
        var originIcon = 'https://chart.googleapis.com/chart?' +
            'chst=d_map_pin_letter&chld=O|FFFF00|000000';
        var map = new google.maps.Map(document.getElementById('map'), {
          center: {lat: 55.53, lng: 9.4},
          zoom: 10
        });
        var geocoder = new google.maps.Geocoder;

        var service = new google.maps.DistanceMatrixService;
        service.getDistanceMatrix({
          origins: [origin1],
          destinations: [destinationA],
          travelMode: 'DRIVING',
          unitSystem: google.maps.UnitSystem.METRIC,
          avoidHighways: false,
          avoidTolls: false
        }, function(response, status) {
          if (status !== 'OK') {
            alert('Error was: ' + status);
          } else {
            var originList = response.originAddresses;
            var destinationList = response.destinationAddresses;
            var outputDiv = document.getElementById('output');
            outputDiv.innerHTML = '';
            deleteMarkers(markersArray);

            var showGeocodedAddressOnMap = function(asDestination) {
              var icon = asDestination ? destinationIcon : originIcon;
              return function(results, status) {
                if (status === 'OK') {
                  map.fitBounds(bounds.extend(results[0].geometry.location));
                  markersArray.push(new google.maps.Marker({
                    map: map,
                    position: results[0].geometry.location,
                    icon: icon
                  }));
                } else {
                  alert('Geocode was not successful due to: ' + status);
                }
              };
            };

            for (var i = 0; i < originList.length; i++) {
              var results = response.rows[i].elements;
              geocoder.geocode({'address': originList[i]},
                  showGeocodedAddressOnMap(false));
              for (var j = 0; j < results.length; j++) {
                geocoder.geocode({'address': destinationList[j]},
                    showGeocodedAddressOnMap(true));
                //outputDiv.innerHTML += originList[i] + ' to ' + destinationList[j] + ': ' + results[j].distance.text + ' in ' +                    results[j].duration.text + '<br>';
                outputDiv.innerHTML += results[j].distance.text + '<br>';
              }
            }

          }
        });
      }

Where origin1 is your location and destinationA is destindation location.you can add above two or more data.

Rad Full Documentation with an example

If you are developing on localhost or a port on localhost such as localhost:8080, in addition to the steps described in the answers above, you also need to ensure that you are not passing a domain value in the Set-Cookie header.
You cannot set the domain to localhost in the Set-Cookie header - that's incorrect - just omit the domain.

See Cookies on localhost with explicit domain and Why won't asp.net create cookies in localhost?

If you are still interested in a javascript api to select both date and time data, have a look at these projects which are forks of bootstrap datepicker:

• Bootstrap Datetime Picker 1

• Bootstrap Datetime Picker 2

The first fork is a big refactor on the parsing/formatting codebase and besides providing all views to select date/time using mouse/touch, it also has a mask option (by default) which lets the user to quickly type the date/time based on a pre-specified format.

You can use -j.

-j
--junk-paths
          Store just the name of a saved file (junk the path), and do  not
          store  directory names. By default, zip will store the full path
          (relative to the current directory).

Extension for UISegmentedControl for setting Font Size.

extension UISegmentedControl {
    @available(iOS 8.2, *)
    func setFontSize(fontSize: CGFloat) {
            let normalTextAttributes: [NSObject : AnyObject]!
            if #available(iOS 9.0, *) {
                normalTextAttributes = [
                    NSFontAttributeName: UIFont.monospacedDigitSystemFontOfSize(fontSize, weight: UIFontWeightRegular)
                ]
            } else {
                normalTextAttributes = [
                    NSFontAttributeName: UIFont.systemFontOfSize(fontSize, weight: UIFontWeightRegular)
                ]
            }

        self.setTitleTextAttributes(normalTextAttributes, forState: .Normal)
    }
 }

As of swift 3.0 .normal state has been removed.you can use following to apply normal state.

myButton.setTitle("myTitle", for: [])

In your first example, you are making a blank array, same as doing var x = []. The 2nd example makes an array of size 3 (with all elements undefined). The 3rd and 4th examples are the same, they both make arrays with those elements.

Be careful when using new Array().

var x = new Array(10); // array of size 10, all elements undefined
var y = new Array(10, 5); // array of size 2: [10, 5]

The preferred way is using the [] syntax.

var x = []; // array of size 0
var y = [10] // array of size 1: [1]

var z = []; // array of size 0
z[2] = 12;  // z is now size 3: [undefined, undefined, 12]

Can use CSS to show error message only on error.

.form-group.has-error .help-block {
    display: block;
}

.form-group .help-block {
    display: none;
}


<div class="form-group has-error">
  <label class="control-label" for="inputError">Input with error</label>
  <input type="text" class="form-control" id="inputError">
  <span class="help-block">Please correct the error</span>
</div>

To extend upon the answer and comment by Yiannis Xanthopoulos and Hot Licks (sorry, I cannot comment yet!), you can set VM options like this example:

-XX:+UseG1GC -XX:MinHeapFreeRatio=15 -XX:MaxHeapFreeRatio=30

In my jdk 7 this will then release unused VM memory if more than 30% of the heap becomes free after GC when the VM is idle. You will probably need to tune these parameters.

While I didn't see it emphasized in the link below, note that some garbage collectors may not obey these parameters and by default java may pick one of these for you, should you happen to have more than one core (hence the UseG1GC argument above).

VM arguments

Update: For java 1.8.0_73 I have seen the JVM occasionally release small amounts with the default settings. Appears to only do it if ~70% of the heap is unused though.. don't know if it would be more aggressive releasing if the OS was low on physical memory.

On the CREATE TABLE,

The AUTO_INCREMENT of abuse_id is set to 2. MySQL now thinks 1 already exists.

With the INSERT statement you are trying to insert abuse_id with record 1. Please set AUTO_INCREMENT on CREATE_TABLE to 1 and try again.

Otherwise set the abuse_id in the INSERT statement to 'NULL'.

How can i resolve this?

We had this exact problem with our ETL jobs at Snowplow, so we extracted our parallel file-copy code (Ruby, built on top of Fog), into its own Ruby gem, called Sluice:

https://github.com/snowplow/sluice

Sluice also handles S3 file delete, move and download; all parallelised and with automatic re-try if an operation fails (which it does surprisingly often). I hope it's useful!

If you plan to get first element often - you can extend QuerySet in this direction:

class FirstQuerySet(models.query.QuerySet):
    def first(self):
        return self[0]


class ManagerWithFirstQuery(models.Manager):
    def get_query_set(self):
        return FirstQuerySet(self.model)

Define model like this:

class MyModel(models.Model):
    objects = ManagerWithFirstQuery()

And use it like this:

 first_object = MyModel.objects.filter(x=100).first()

You can do this by subsetting the data you pass into your merge:

merge(x = DF1, y = DF2[ , c("Client", "LO")], by = "Client", all.x=TRUE)

Or you can simply delete the column after your current merge :)

Set up HADOOP_HOME variable in windows to resolve the problem.

You can find answer in org/apache/hadoop/hadoop-common/2.2.0/hadoop-common-2.2.0-sources.jar!/org/apache/hadoop/util/Shell.java :

IOException from

  public static final String getQualifiedBinPath(String executable) 
  throws IOException {
    // construct hadoop bin path to the specified executable
    String fullExeName = HADOOP_HOME_DIR + File.separator + "bin" 
      + File.separator + executable;
    File exeFile = new File(fullExeName);
    if (!exeFile.exists()) {
      throw new IOException("Could not locate executable " + fullExeName
        + " in the Hadoop binaries.");
    }
    return exeFile.getCanonicalPath();
  }

HADOOP_HOME_DIR from

// first check the Dflag hadoop.home.dir with JVM scope
String home = System.getProperty("hadoop.home.dir");
// fall back to the system/user-global env variable
if (home == null) {
  home = System.getenv("HADOOP_HOME");
}

To define Decimal, Float and Double in .Net (c#)

you must mention values as:

Decimal dec = 12M/6;
Double dbl = 11D/6;
float fl = 15F/6;

and check the results.

And Bytes Occupied by each are

Float - 4
Double - 8
Decimal - 12

If you want to retain the last one of the duplicates you could use

 tac a.csv | sort -u -t, -r -k1,1 |tac

Which was my requirement

here

tac will reverse the file line by line

For difference between dates including holidays I went this way:

1) Table with Holidays:

    CREATE TABLE [dbo].[Holiday](
[Id] [int] IDENTITY(1,1) NOT NULL,
[Name] [nvarchar](50) NULL,
[Date] [datetime] NOT NULL)

2) I had my plannings Table like this and wanted to fill column Work_Days which was empty:

    CREATE TABLE [dbo].[Plan_Phase](
[Id] [int] IDENTITY(1,1) NOT NULL,
[Id_Plan] [int] NOT NULL,
[Id_Phase] [int] NOT NULL,
[Start_Date] [datetime] NULL,
[End_Date] [datetime] NULL,
[Work_Days] [int] NULL)

3) So in order to get "Work_Days" to later fill in my column just had to:

SELECT Start_Date, End_Date,
 (DATEDIFF(dd, Start_Date, End_Date) + 1)
-(DATEDIFF(wk, Start_Date, End_Date) * 2)
-(SELECT COUNT(*) From Holiday Where Date  >= Start_Date AND Date <= End_Date)
-(CASE WHEN DATENAME(dw, Start_Date) = 'Sunday' THEN 1 ELSE 0 END)
-(CASE WHEN DATENAME(dw, End_Date) = 'Saturday' THEN 1 ELSE 0 END)
-(CASE WHEN (SELECT COUNT(*) From Holiday Where Start_Date  = Date) > 0 THEN 1 ELSE 0 END)
-(CASE WHEN (SELECT COUNT(*) From Holiday Where End_Date  = Date) > 0 THEN 1 ELSE 0 END) AS Work_Days
from Plan_Phase

Hope that I could help.

Cheers

class PassByReference:
    def Change(self, var):
        self.a = var
        print(self.a)
s=PassByReference()
s.Change(5)     

Here is the definition of abstract class in c++ standard

n4687

13.4.2

An abstract class is a class that can be used only as a base class of some other class; no objects of an abstract class can be created except as subobjects of a class derived from it. A class is abstract if it has at least one pure virtual function.

I have written an custom ansible module to cleanup files based on multiple filters like age, timestamp, glob patterns, etc.

It is also compatible with ansible older versions. It can be found here.

Here is an example:

- cleanup_files:
  path_pattern: /tmp/*.log
  state: absent
  excludes:
    - foo*
    - bar*

When you assign a variable (x = ...), you are creating a variable in the current scope (e.g. local to the current function). If it happens to shadow a variable fron an outer (e.g. global) scope, well too bad - Python doesn't care (and that's a good thing). So you can't do this:

x = 0
def f():
    x = 1
f()
print x #=>0

and expect 1. Instead, you need do declare that you intend to use the global x:

x = 0
def f():
    global x
    x = 1
f()
print x #=>1

But note that assignment of a variable is very different from method calls. You can always call methods on anything in scope - e.g. on variables that come from an outer (e.g. the global) scope because nothing local shadows them.

Also very important: Member assignment (x.name = ...), item assignment (collection[key] = ...), slice assignment (sliceable[start:end] = ...) and propably more are all method calls as well! And therefore you don't need global to change a global's members or call it methods (even when they mutate the object).

Okay: This is what I did now and it's solved:

My httpd-vhosts.conf looks like this now:

<VirtualHost dropbox.local:80>
    DocumentRoot "E:/Documenten/Dropbox/Dropbox/dummy-htdocs"
    ServerName dropbox.local
    ErrorLog "logs/dropbox.local-error.log"
    CustomLog "logs/dropbox.local-access.log" combined
    <Directory "E:/Documenten/Dropbox/Dropbox/dummy-htdocs">
        # AllowOverride All      # Deprecated
        # Order Allow,Deny       # Deprecated
        # Allow from all         # Deprecated

        # --New way of doing it
        Require all granted    
    </Directory>
</VirtualHost>

First, I saw that it's necessary to have set the <Directory xx:xx> options. So I put the <Directory > [..] </Directory>-part INSIDE the <VirtualHost > [..] </VirtualHost>. After that, I added AllowOverride AuthConfig Indexes to the <Directory> options.

Now http://localhost also points to the dropbox-virtualhost. So I added dropbox.local to <VirtualHost *:80> which makes it as <VirtualHost dropbox.local:80>

FINALLY it works :D!

I'm a happy man! :) :)

I hope someone else can use this information.

The short answer is that history.pushState (not History.pushState, which would throw an exception, the window part is optional) will never do what you suggest.

If pages are refreshing, then it is caused by other things that you are doing (for example, you might have code running that goes to a new location in the case of the address bar changing).

history.pushState({urlPath:'/page2.php'},"",'/page2.php') works exactly like it is supposed to in the latest versions of Chrome, IE and Firefox for me and my colleagues.

In fact you can put whatever you like into the function: history.pushState({}, '', 'So long and thanks for all the fish.not a real file').

If you post some more code (with special attention for code nearby the history.pushState and anywhere document.location is used), then we'll be more than happy to help you figure out where exactly this issue is coming from.

If you post more code, I'll update this answer (I have your question favourited) :).

There is no built-in method, but there are several ways to do it. The most straightforward way that I can think of at the moment is:

1. Create a subclass of JComponent.
2. Override the paintComponent(Graphics g) method to paint the image that you want to display.
3. Set the content pane of the JFrame to be this subclass.

Some sample code:

class ImagePanel extends JComponent {
    private Image image;
    public ImagePanel(Image image) {
        this.image = image;
    }
    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        g.drawImage(image, 0, 0, this);
    }
}

// elsewhere
BufferedImage myImage = ImageIO.read(...);
JFrame myJFrame = new JFrame("Image pane");
myJFrame.setContentPane(new ImagePanel(myImage));

Note that this code does not handle resizing the image to fit the JFrame, if that's what you wanted.

If your jar file already has an absolute pathname as shown, it is particularly easy:

cd /where/you/want/it; jar xf /path/to/jarfile.jar

That is, you have the shell executed by Python change directory for you and then run the extraction.

If your jar file does not already have an absolute pathname, then you have to convert the relative name to absolute (by prefixing it with the path of the current directory) so that jar can find it after the change of directory.

The only issues left to worry about are things like blanks in the path names.

open looks in the current working directory, which in your case is ~, since you are calling your script from the ~ directory.

You can fix the problem by either

• cding to the directory containing data.csv before executing the script, or

• by using the full path to data.csv in your script, or

• by calling os.chdir(...) to change the current working directory from within your script. Note that all subsequent commands that use the current working directory (e.g. open and os.listdir) may be affected by this.

Very simple solution:

randomize = np.arange(len(x))
np.random.shuffle(randomize)
x = x[randomize]
y = y[randomize]

the two arrays x,y are now both randomly shuffled in the same way

To fix this, open the SQL Server Management Studio and click New Query. Then type:

USE mydatabase
exec sp_changedbowner 'sa', 'true'

If you installed font-awesome via package manager (yarn or npm) then, please be aware which version was installed. Alternatively, if you've already installed font-awesome long time ago then, check what version was installed.

In essence, versions installed via package managers might be behind version that is shown on https://fontawesome.com/ website. Thus, as it is today (21.06.2019) package manager will install v4.7.0 as the latest version but, website will point to documentation that refers to v5.*.

Solution, visit the website that documents icons for v4.7.0 https://fontawesome.com/v4.7.0, copy appropriate icon e.g. <i class="fa fa-sign-in" aria-hidden="true"></i> and incorporate it into your html. More context can be found here.