A threadpool is at core a set of threads all bound to a function working as an event loop. These threads will endlessly wait for a task to be executed, or their own termination.

The threadpool job is to provide an interface to submit jobs, define (and perhaps modify) the policy of running these jobs (scheduling rules, thread instantiation, size of the pool), and monitor the status of the threads and related resources.

So for a versatile pool, one must start by defining what a task is, how it is launched, interrupted, what is the result (see the notion of promise and future for that question), what sort of events the threads will have to respond to, how they will handle them, how these events shall be discriminated from the ones handled by the tasks. This can become quite complicated as you can see, and impose restrictions on how the threads will work, as the solution becomes more and more involved.

The current tooling for handling events is fairly barebones(*): primitives like mutexes, condition variables, and a few abstractions on top of that (locks, barriers). But in some cases, these abstrations may turn out to be unfit (see this related question), and one must revert to using the primitives.

Other problems have to be managed too:

• signal
• i/o
• hardware (processor affinity, heterogenous setup)

How would these play out in your setting?

This answer to a similar question points to an existing implementation meant for boost and the stl.

I offered a very crude implementation of a threadpool for another question, which doesn't address many problems outlined above. You might want to build up on it. You might also want to have a look of existing frameworks in other languages, to find inspiration.

_{(*) I don't see that as a problem, quite to the contrary. I think it's the very spirit of C++ inherited from C.}

As Pax rightly said, measure, don't guess. That what I did for DNSwitness and the results were suprising: the ideal number of threads was much higher than I thought, something like 15,000 threads to get the fastest results.

Of course, it depends on many things, that's why you must measure yourself.

Complete measures (in French only) in Combien de fils d'exécution ?.

Two ways:

1. Have a bean implement ApplicationListener<ContextClosedEvent>. onApplicationEvent() will get called before the context and all the beans are destroyed.

2. Have a bean implement Lifecycle or SmartLifecycle. stop() will get called before the context and all the beans are destroyed.

Either way you can shut down the task stuff before the bean destroying mechanism takes place.

Eg:

@Component
public class ContextClosedHandler implements ApplicationListener<ContextClosedEvent> {
    @Autowired ThreadPoolTaskExecutor executor;
    @Autowired ThreadPoolTaskScheduler scheduler;

    @Override
    public void onApplicationEvent(ContextClosedEvent event) {
        scheduler.shutdown();
        executor.shutdown();
    }       
}

(Edit: Fixed method signature)

private class TaskThreadFactory implements ThreadFactory
{

    @Override
    public Thread newThread(Runnable r) {
        Thread t = new Thread(r, "TASK_EXECUTION_THREAD");

        return t;
    }

}

Pass the ThreadFactory to an executorservice and you are good to go

When you must return specified type:

Task.FromResult<MyClass>(null);

You can use ExecutorService.invokeAll method, It will execute all task and wait till all threads finished their task.

Here is complete javadoc

You can also user overloaded version of this method to specify the timeout.

Here is sample code with ExecutorService.invokeAll

public class Test {
    public static void main(String[] args) throws InterruptedException, ExecutionException {
        ExecutorService service = Executors.newFixedThreadPool(3);
        List<Callable<String>> taskList = new ArrayList<>();
        taskList.add(new Task1());
        taskList.add(new Task2());
        List<Future<String>> results = service.invokeAll(taskList);
        for (Future<String> f : results) {
            System.out.println(f.get());
        }
    }

}

class Task1 implements Callable<String> {
    @Override
    public String call() throws Exception {
        try {
            Thread.sleep(2000);
            return "Task 1 done";
        } catch (Exception e) {
            e.printStackTrace();
            return " error in task1";
        }
    }
}

class Task2 implements Callable<String> {
    @Override
    public String call() throws Exception {
        try {
            Thread.sleep(3000);
            return "Task 2 done";
        } catch (Exception e) {
            e.printStackTrace();
            return " error in task2";
        }
    }
}

You would have to tune it according to your environment.

Sometimes it's more useful to increase the size of the backlog (acceptCount) instead of the maximum number of threads.

Say, instead of

<Connector ... maxThreads="500" acceptCount="50"

you use

<Connector ... maxThreads="300" acceptCount="150"

you can get much better performance in some cases, cause there would be less threads disputing the resources and the backlog queue would be consumed faster.

In any case, though, you have to do some benchmarks to really know what is best.

There is the way of current thread getting:

Thread t = Thread.currentThread();

After you have got Thread class object (t) you are able to get information you need using Thread class methods.

Thread ID gettting:

long tId = t.getId(); // e.g. 14291

Thread name gettting:

String tName = t.getName(); // e.g. "pool-29-thread-7"

Two options:

char c1 = '\u0001';
char c1 = (char) 1;

If you seek a key that is equivalent to a directory then you might want this approach

session = boto3.session.Session()
resource = session.resource("s3")
bucket = resource.Bucket('mybucket')

key = 'dir-like-or-file-like-key'
objects = [o for o in bucket.objects.filter(Prefix=key).limit(1)]    
has_key = len(objects) > 0

This works for a parent key or a key that equates to file or a key that does not exist. I tried the favored approach above and failed on parent keys.

There's the dot notation and the bracket notation

myObj[a] = b;

There are multiple methods to do that:

Method 1:

alert($('.checkbox_class_here:checked').size());

Method 2:

alert($('input[name=checkbox_name]').attr('checked'));

Method 3:

alert($(":checkbox:checked").length);

Contrary to some of the other answers here, I say that you can use tabs however you want. vim was designed to be versatile and customizable, rather than forcing you to work according to predefined parameters. We all know how us programmers love to impose our "ethics" on everyone else, so this achievement is certainly a primary feature.

<C-w>gf is the tab equivalent of buffers' gf command. <C-PageUp> and <C-PageDown> will switch between tabs. (In Byobu, these two commands never work for me, but they work outside of Byobu/tmux. Alternatives are gt and gT.) <C-w>T will move the current window to a new tab page.

If you'd prefer that vim use an existing tab if possible, rather than creating a duplicate tab, add :set switchbuf=usetab to your .vimrc file. You can add newtab to the list (:set switchbuf=usetab,newtab) to force QuickFix commands that display compile errors to open in separate tabs. I prefer split instead, which opens the compile errors in a split window.

If you have mouse support enabled with :set mouse=a, you can interact with the tabs by clicking on them. There's also a + button by default that will create a new tab.

For the documentation on tabs, type :help tab-page in normal mode. (After you do that, you can practice moving a window to a tab using <C-w>T.) There's a long list of commands. Some of the window commands have to do with tabs, so you might want to look at that documentation as well via :help windows.

Addition: 2013-12-19

To open multiple files in vim with each file in a separate tab, use vim -p file1 file2 .... If you're like me and always forget to add -p, you can add it at the end, as vim follows the normal command line option parsing rules. Alternatively, you can add a bash alias mapping vim to vim -p.

I have got this error on open page from Google Cache.

I think, cached page(client) disconnecting on page loading.

You can ignore this error log with try-catch on filter.

If you are trying to build John the Ripper "bleeding-jumbo" and get an error like "make: *** No rule to make target 'linux-x86-64'". Try running this command instead: ./configure && make

In terms of a Spring boot application, a bean is simply a Java object which is created by Spring framework when the application starts.

The purpose of the object can be pretty much anything - a configuration, a service, database connection factory etc. - Spring doesn't really care.

Most beans depend on other beans to work, for example an entity manager might need a database connection. Spring framework is able to figure out how the beans should be wired together automatically. From your point of an application developer, you just have to declare the beans you need and they "magically" appear in your application ready to use.

The Random class is used to create random numbers. (Pseudo-random that is of course.).

Example:

Random rnd = new Random();
int month  = rnd.Next(1, 13);  // creates a number between 1 and 12
int dice   = rnd.Next(1, 7);   // creates a number between 1 and 6
int card   = rnd.Next(52);     // creates a number between 0 and 51

If you are going to create more than one random number, you should keep the Random instance and reuse it. If you create new instances too close in time, they will produce the same series of random numbers as the random generator is seeded from the system clock.

I was upgrading from old sweetalert and found out how to do it in the new Version (official Docs):

// this is a Node object    
var span = document.createElement("span");
span.innerHTML = "Testno  sporocilo za objekt <b>test</b>";

swal({
    title: "" + txt + "", 
    content: span,
    confirmButtonText: "V redu", 
    allowOutsideClick: "true" 
});

You can skip all the metaprogramming in C++14, and just write this using fit::conditional from the Fit library:

template<class T>
std::string optionalToString(T* x)
{
    return fit::conditional(
        [](auto* obj) -> decltype(obj->toString()) { return obj->toString(); },
        [](auto*) { return "toString not defined"; }
    )(x);
}

You can also create the function directly from the lambdas as well:

FIT_STATIC_LAMBDA_FUNCTION(optionalToString) = fit::conditional(
    [](auto* obj) -> decltype(obj->toString(), std::string()) { return obj->toString(); },
    [](auto*) -> std::string { return "toString not defined"; }
);

However, if you are using a compiler that doesn't support generic lambdas, you will have to write separate function objects:

struct withToString
{
    template<class T>
    auto operator()(T* obj) const -> decltype(obj->toString(), std::string())
    {
        return obj->toString();
    }
};

struct withoutToString
{
    template<class T>
    std::string operator()(T*) const
    {
        return "toString not defined";
    }
};

FIT_STATIC_FUNCTION(optionalToString) = fit::conditional(
    withToString(),
    withoutToString()
);

I think zeroclipboard is great. this version work with latest Flash 11: http://www.itjungles.com/javascript/javascript-easy-cross-browser-copy-to-clipboard-solution.

A stable sorting algorithm is the one that sorts the identical elements in their same order as they appear in the input, whilst unstable sorting may not satisfy the case. - _{^{I thank my algorithm lecturer Didem Gozupek to have provided insight into algorithms}}.

Stable Sorting Algorithms:

• Insertion Sort
• Merge Sort
• Bubble Sort
• Tim Sort
• Counting Sort
• Block Sort
• Quadsort
• Library Sort
• Cocktail shaker Sort
• Gnome Sort
• Odd–even Sort

Unstable Sorting Algorithms:

• Heap sort
• Selection sort
• Shell sort
• Quick sort
• Introsort (subject to Quicksort)
• Tree sort
• Cycle sort
• Smoothsort
• Tournament sort(subject to Hesapsort)

First, I'm not certain that you need a second thread to set the shutdown_flag.
Why not set it directly in the SIGTERM handler?

An alternative is to raise an exception from the SIGTERM handler, which will be propagated up the stack. Assuming you've got proper exception handling (e.g. with with/contextmanager and try: ... finally: blocks) this should be a fairly graceful shutdown, similar to if you were to Ctrl+C your program.

Example program signals-test.py:

#!/usr/bin/python

from time import sleep
import signal
import sys


def sigterm_handler(_signo, _stack_frame):
    # Raises SystemExit(0):
    sys.exit(0)

if sys.argv[1] == "handle_signal":
    signal.signal(signal.SIGTERM, sigterm_handler)

try:
    print "Hello"
    i = 0
    while True:
        i += 1
        print "Iteration #%i" % i
        sleep(1)
finally:
    print "Goodbye"

Now see the Ctrl+C behaviour:

$ ./signals-test.py default
Hello
Iteration #1
Iteration #2
Iteration #3
Iteration #4
^CGoodbye
Traceback (most recent call last):
  File "./signals-test.py", line 21, in <module>
    sleep(1)
KeyboardInterrupt
$ echo $?
1

This time I send it SIGTERM after 4 iterations with kill $(ps aux | grep signals-test | awk '/python/ {print $2}'):

$ ./signals-test.py default
Hello
Iteration #1
Iteration #2
Iteration #3
Iteration #4
Terminated
$ echo $?
143

This time I enable my custom SIGTERM handler and send it SIGTERM:

$ ./signals-test.py handle_signal
Hello
Iteration #1
Iteration #2
Iteration #3
Iteration #4
Goodbye
$ echo $?
0

For current datetime, you can use now() function in postgresql insert query.

You can also refer following link.

insert statement in postgres for data type timestamp without time zone NOT NULL,.

A simple solution is the library factoextra. You can change the clustering method and the method for calculate the best number of groups. For example if you want to know the best number of clusters for a k- means:

Data: mtcars

library(factoextra)   
fviz_nbclust(mtcars, kmeans, method = "wss") +
      geom_vline(xintercept = 3, linetype = 2)+
      labs(subtitle = "Elbow method")

Finally, we get a graph like:

The primary committer to node-mongodb-native says:

You open do MongoClient.connect once when your app boots up and reuse the db object. It's not a singleton connection pool each .connect creates a new connection pool.

So, to answer your question directly, reuse the db object that results from MongoClient.connect(). This gives you pooling, and will provide a noticeable speed increase as compared with opening/closing connections on each db action.

Use an array instead of an object (square brackets).

var example = [ {/* stuff1 */}, { /* stuff2 */}, { /* stuff3 */}];
var fist = example[0];

Note that you lose the 'foo' identifiers. But you could add a name property to the contained objects:

var example = [ 
  {name: 'foo1', /* stuff1 */},
  {name: 'foo2', /* stuff2 */},
  {name: 'foo3', /* stuff3 */}
];
var whatWasFirst = example[0].name;

All the radio buttons options must have the same name for you to be able to select one option at a time.

Just window.location = "http://wherever.you.wanna.go.com/", or, for local links, window.location = "my_relative_link.html".

You can try it by typing it into your address bar as well, e.g. javascript: window.location = "http://www.google.com/".

Also note that the protocol part of the URL (http://) is not optional for absolute links; omitting it will make javascript assume a relative link.

First, you need to create your branch locally

git checkout -b your_branch

After that, you can work locally in your branch, when you are ready to share the branch, push it. The next command push the branch to the remote repository origin and tracks it

git push -u origin your_branch

Your Teammates/colleagues can push to your branch by doing commits and then push explicitly

... work ...
git commit
... work ...
git commit
git push origin HEAD:refs/heads/your_branch 

image_tag is the best way to do the job friend

Parameter Options FollowSymLinks enables you to have a symlink in your webroot pointing to some other file/dir. With this disabled, Apache will refuse to follow such symlink. More secure Options SymLinksIfOwnerMatch can be used instead - this will allow you to link only to other files which you do own.

If you use Options directive in .htaccess with parameter which has been forbidden in main Apache config, server will return HTTP 500 error code.

Allowed .htaccess options are defined by directive AllowOverride in the main Apache config file. To allow symlinks, this directive need to be set to All or Options.

Besides allowing use of symlinks, this directive is also needed to enable mod_rewrite in .htaccess context. But for this, also the more secure SymLinksIfOwnerMatch option can be used.

For identifying a windows machine uniquely. Make sure when you use wmic to have a strategy of alternative methods. Since "wmic bios get serialnumber" might not work on all machines, you might need to have additional methods:

# Get serial number from bios
wmic bios get serialnumber
# If previous fails, get UUID
wmic csproduct get UUID
# If previous fails, get diskdrive serialnumber
wmic DISKDRIVE get SerialNumber

Resources: The Best Way To Uniquely Identify A Windows Machine http://www.nextofwindows.com/the-best-way-to-uniquely-identify-a-windows-machine/

That helped me with my code.

When I tried feltering only a type of files and show them on screen by adding a condition that tests on each line.

Like this

elif command == 'ls':
    print("directory of ", ftp.pwd())
    data = []
    ftp.dir(data.append)

    for line in data:
        x = line.split(".")
        formats=["gz", "zip", "rar", "tar", "bz2", "xz"]
        if x[-1] in formats:
            print ("-", line)

It formats the string as two uppercase hexadecimal characters.

In more depth, the argument "X2" is a "format string" that tells the ToString() method how it should format the string. In this case, "X2" indicates the string should be formatted in Hexadecimal.

byte.ToString() without any arguments returns the number in its natural decimal representation, with no padding.

Microsoft documents the standard numeric format strings which generally work with all primitive numeric types' ToString() methods. This same pattern is used for other types as well: for example, standard date/time format strings can be used with DateTime.ToString().

I want to add or remove "active" class in my code dynamically on ng-click, here what I have done.

<ul ng-init="selectedTab = 'users'">
   <li ng-class="{'active':selectedTab === 'users'}" ng-click="selectedTab = 'users'"><a href="#users" >Users</a></li>
   <li ng-class="{'active':selectedTab === 'items'}" ng-click="selectedTab = 'items'"><a href="#items" >Items</a></li>
</ul>

You can also do this in ASP.NET Core 2 by defining the connection string in your appSettings.json file. Then in your Startup.cs you specify which connection string to use.

appSettings.json

{
    "connectionStrings": {
        "YourDBConnectionString": "Server=(localdb)\\mssqllocaldb;Database=YourDB;Trusted_Connection=True"
    }
}

Startup.cs

public static IConfiguration Configuration { get; private set;}

public Startup(IConfiguration configuration)
{
    Configuration = configuration;
}
var connectionString = Configuration["connectionStrings:YourDBConnectionString"];
services.AddDbContext<YourDbContext>(x => x.UseSqlServer(connectionString));

The c variable already contains the char code!

"string".each_byte do |c|
    puts c
end

yields

115
116
114
105
110
103

One thing I don't see in examples is that when you cast BehaviorSubject to Observable via asObservable, it inherits behaviour of returning last value on subscription.

It's the tricky bit, as often libraries will expose fields as observable (i.e. params in ActivatedRoute in Angular2), but may use Subject or BehaviorSubject behind the scenes. What they use would affect behaviour of subscribing.

See here http://jsbin.com/ziquxapubo/edit?html,js,console

let A = new Rx.Subject();
let B = new Rx.BehaviorSubject(0);

A.next(1);
B.next(1);

A.asObservable().subscribe(n => console.log('A', n));
B.asObservable().subscribe(n => console.log('B', n));

A.next(2);
B.next(2);

You can use the ps command to take a look at the running containers:

docker ps -a

From there you should see the name of your container along with the container ID that you're looking for. Here's more information about docker ps.

nan = float('nan')

And now you have the constant, nan.

You can similarly create NaN values for decimal.Decimal.:

dnan = Decimal('nan')

Please use the 4th parameter of moment.isBetween function (inclusivity). Example:

var startDate = moment("15/02/2013", "DD/MM/YYYY");
var endDate = moment("20/02/2013", "DD/MM/YYYY");

var testDate = moment("15/02/2013", "DD/MM/YYYY");

testDate.isBetween(startDate, endDate, 'days', true); // will return true
testDate.isBetween(startDate, endDate, 'days', false); // will return false

The problem is you are not linking to the jQuery UI library (which is where datepicker resides):

http://jsfiddle.net/5AkyC/

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<link rel="stylesheet" type="text/css" href="style.css" media="screen" />
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.9/jquery-ui.js"></script>
<script>
$(function() {
    $( "#datepicker" ).datepicker();
});
</script>
</head>
<body>
    <div class="demo">
    <p>Date: <input type="text" id="datepicker"></p>
    </div><!-- End demo -->
</body>
</HTML>

Personally, I would say Web World's answer is the best today, given HTML standards. If you need to support IE < 10, you will need to use some form of ActiveX. I would avoid the recommendations that involve coding against Scripting.FileSystemObject, or instantiating ActiveX directly.

In this case, I have had success using 3rd party JS libraries such as plupload which can be configured to use HTML5 apis or Flash/Silverlight controls to backfill browsers that don't support those. Plupload has a client side API for checking file size that works in IE < 10.

Unfortunately, Date object in javascript returns information about months only in numeric format. The faster thing you can do is to create an array of months (they are not supposed to change frequently!) and create a function which returns the name based on the number.

Something like this:

function getMonthNameByMonthNumber(mm) { 
   var months = new Array("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"); 

   return months[mm]; 
}

Your code therefore becomes:

var prnDt = "Printed on Thursday, " + now.getDate() + " " + getMonthNameByMonthNumber(now.getMonth) + " "+  now.getFullYear() + " at " + h + ":" + m + ":" s;

I had the same problem while installing gensim on windows. Gensim is dependent on scipy and scipy on numpy. Making all three work is real pain. It took me a lot of time to make all there work on same time.

Solution: If you are using windows make sure you install numpy+mkl instead of just numpy. If you have already installed scipy and numpy, uninstall then using "pip uninstall scipy" and "pip uninstall numpy"

Then download numpy-1.13.1+mkl-cp34-cp34m-win32.whl from http://www.lfd.uci.edu/~gohlke/pythonlibs/#numpy and install using pip install numpy-1.13.1+mkl-cp34-cp34m-win32.wh Note: in cp34-cp34m 34 represent the version of python you are using, so download the relevant version.

Now download scipy from http://www.lfd.uci.edu/~gohlke/pythonlibs/#scipy (appropriate version for your python and system) and install using "pip install scipy-0.19.1-cp34-cp34m-win32.whl"

Your numpy and Scipy both should work now. These binaries by Christoph Gohlke makes it very easy to install python packages on windows. But make sure you download all the dependent packages from there.

Run this script from SharePoint 2010 Management Shell as Administrator.

You need to examine (put a breakpoint on / Quick Watch) the Request object in the Page_Load method of your Test.aspx.cs file.

You could use the Laravel query builder, but this is not the best way to do it.

Check Wader's answer below for the Eloquent way - which is better as it allows you to check that there is actually a user that matches the email address, and handle the error if there isn't.

DB::table('users')
        ->where('email', $userEmail)  // find your user by their email
        ->limit(1)  // optional - to ensure only one record is updated.
        ->update(array('member_type' => $plan));  // update the record in the DB. 

If you have multiple fields to update you can simply add more values to that array at the end.

taskkill /F /IM notepad.exe this is the best way to kill the task from task manager.

Java native code necessities:

• h/w access and control.
• use of commercial s/w and system services[h/w related].
• use of legacy s/w that hasn't or cannot be ported to Java.
• Using native code to perform time-critical tasks.

hope these points answers your question :)

Another way to do it would be to inspect the url bar in chrome to find the id of the element, have your WebDriver click that element, and then send the keys you use to copy and paste using the keys common function from selenium, and then printing it out or storing it as a variable, etc.

In my case, we have hooks for commit messages, our server script accepts commits if they have the special format for commit message"<JIRA ID><Message>". It(hook) declines commit if respective Jira ticket does not exist or there are some special symbols in the commit message. I face this error when I add /, [, > etc. in a commit message, removing those works fine.

In my and possibly @BIOHAZARD case it was nginx proxy timeout. In default it's 60 sec without activity in socket

I changed it to 24h in nginx and it resolved problem

proxy_read_timeout 86400s;
proxy_send_timeout 86400s;

First, you should use any WebSocket or polling mechanics to notify the frontend part about changes that happened. I use Flask-SocketIO wrapper, and very happy with async messaging for my tiny apps.

Nest, you can do all logic which you need in a separate thread(s), and notify the frontend via SocketIO object (Flask holds continuous open connection with every frontend client).

As an example, I just implemented page reload on backend file modifications:

<!doctype html>
<script>
    sio = io()

    sio.on('reload',(info)=>{
        console.log(['sio','reload',info])
        document.location.reload()
    })
</script>

class App(Web, Module):

    def __init__(self, V):
        ## flask module instance
        self.flask = flask
        ## wrapped application instance
        self.app = flask.Flask(self.value)
        self.app.config['SECRET_KEY'] = config.SECRET_KEY
        ## `flask-socketio`
        self.sio = SocketIO(self.app)
        self.watchfiles()

    ## inotify reload files after change via `sio(reload)``
    def watchfiles(self):
        from watchdog.observers import Observer
        from watchdog.events import FileSystemEventHandler
        class Handler(FileSystemEventHandler):
            def __init__(self,sio):
                super().__init__()
                self.sio = sio
            def on_modified(self, event):
                print([self.on_modified,self,event])
                self.sio.emit('reload',[event.src_path,event.event_type,event.is_directory])
        self.observer = Observer()
        self.observer.schedule(Handler(self.sio),path='static',recursive=True)
        self.observer.schedule(Handler(self.sio),path='templates',recursive=True)
        self.observer.start()

I highly recommend Loopj.

I have successfully used it to upload multiple files at once, including different mime types. Simply do this:

File myVideo = new File("/path/to/myvideo.mp4");
File myPic = new File("/path/to/mypic.jpg");
RequestParams params = new RequestParams();
try {
  params.put("profile_picture", myPic);
  params.put("my_video", myVideo);
} catch(FileNotFoundException e) {}

For large or many files you might have to increase the timeout amount else the default timeout is used which might be too short:

client.setTimeout(500000) //make this the appropriate timeout in milliseconds

Please see this links for a full description of loopj and how to use it, by far the easiest async http library I have come across:

http://loopj.com/android-async-http/ http://loopj.com/android-async-http/doc/com/loopj/android/http/AsyncHttpClient.html

I was searching to make my WinForms application "Always on Top" but setting "TopMost" did not do anything for me. I knew it was possible because WinAmp does this (along with a host of other applications).

What I did was make a call to "user32.dll." I had no qualms about doing so and it works great. It's an option, anyway.

First, import the following namespace:

using System.Runtime.InteropServices;

Add a few variables to your class declaration:

private static readonly IntPtr HWND_TOPMOST = new IntPtr(-1);
private const UInt32 SWP_NOSIZE = 0x0001;
private const UInt32 SWP_NOMOVE = 0x0002;
private const UInt32 TOPMOST_FLAGS = SWP_NOMOVE | SWP_NOSIZE;

Add prototype for user32.dll function:

[DllImport("user32.dll")] 
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);

Then in your code (I added the call in Form_Load()), add the call:

SetWindowPos(this.Handle, HWND_TOPMOST, 0, 0, 0, 0, TOPMOST_FLAGS);

Hope that helps. Reference

For Laravel 5.2 >=

use the Eloquent method:

inRandomOrder()

The inRandomOrder method may be used to sort the query results randomly. For example, you may use this method to fetch a random user:

$randomUser = DB::table('users')
            ->inRandomOrder()
            ->first();

from docs: https://laravel.com/docs/5.2/queries#ordering-grouping-limit-and-offset

Heroes of Might and Magic V used modified Silent Storm engine. I think you can find many good engines listed in wikipedia: Lua-scriptable game engines

All currently supported versions (9.5 and up) allow pattern matching in addition to LIKE.

Reference: https://www.postgresql.org/docs/current/functions-matching.html

  StringBuffer sBuffer = new StringBuffer();
  Pattern p = Pattern.compile("[0-9]+.[0-9]*|[0-9]*.[0-9]+|[0-9]+");
  Matcher m = p.matcher(str);
  while (m.find()) {
    sBuffer.append(m.group());
  }
  return sBuffer.toString();

This is for extracting numbers retaining the decimal

If by increasing the memory limit you have gotten rid of the error and your code now works, you'll need to take measures to decrease that memory usage. Here are a few things you could do to decrease it:

If you're reading files, read them line-by-line instead of reading in the complete file into memory. Look at fgets and SplFileObject::fgets. Upgrade to a new version of PHP if you're using PHP 5.3. PHP 5.4 and 5.5 use much less memory.

Avoid loading large datasets into in an array. Instead, go for processing smaller subsets of the larger dataset and, if necessary, persist your data into a database to relieve memory use.

Try the latest version or minor version of a third-party library (1.9.3 vs. your 1.8.2, for instance) and use whichever is more stable. Sometimes newer versions of libraries are written more efficiently.

If you have an uncommon or unstable PHP extension, try upgrading it. It might have a memory leak.

If you're dealing with large files and you simply can't read it line-by-line, try breaking the file into many smaller files and process those individually. Disable PHP extensions that you don't need.

In the problem area, unset variables which contain large amounts of data and aren't required later in the code.

FROM: https://www.airpair.com/php/fatal-error-allowed-memory-size

Just override onDestroy method in your first visible activity like after splash you have home page and while redirecting from splash to home page you have already finish splash. so put on destroy in home page. and stop service in that method.

This article explains how you can use PHP SoapClient to call a api web service.

in android 3.1.1 we cant find sync project in tools so C:\Users\AndroidStudioProjects\projectname\.idea\libraries remove the files from libraries and sync again

The reason to use it is because strcmp

returns < 0 if str1 is less than str2; > 0 if str1 is greater than str2, and 0 if they are equal.

=== only returns true or false, it doesn't tell you which is the "greater" string.

Factory classes are more heavyweight, but give you certain advantages. In cases when you need to build your objects from multiple, raw data sources they allow you to encapsulate only the building logic (and maybe the aggregation of the data) in one place. There it can be tested in abstract without being concerned with the object interface.

I have found this a useful pattern, particularly where I am unable to replace and inadequate ORM and want to efficiently instantiate many objects from DB table joins or stored procedures.

I want to do a for loop, yet with askewchan's method it does not work well, so I have modified it.

x = np.empty((0,3))
y = np.array([1,2,3])
for i in ...
    x = np.vstack((x,y))

The simplest solution I have found is to wrap your Font Awesome Icon in an <a></a> tag:

   <Tooltip title="Node.js" >
     <a>
        <FontAwesomeIcon icon={faNode} size="2x" />
     </a>
   </Tooltip>

 X <- data.frame(Variable1=c(11,14,12,15),Variable2=c(2,3,1,4))
> X
  Variable1 Variable2
1        11         2
2        14         3
3        12         1
4        15         4
> X[X$Variable1!=11 & X$Variable1!=12, ]
  Variable1 Variable2
2        14         3
4        15         4
> X[ ! X$Variable1 %in% c(11,12), ]
  Variable1 Variable2
2        14         3
4        15         4

You can functionalize this however you like.

Paths specified with a . are relative to the current working directory, not relative to the script file. So the file might be found if you run node app.js but not if you run node folder/app.js. The only exception to this is require('./file') and that is only possible because require exists per-module and thus knows what module it is being called from.

To make a path relative to the script, you must use the __dirname variable.

var path = require('path');

path.join(__dirname, 'path/to/file')

or potentially

path.join(__dirname, 'path', 'to', 'file')

Check your Pattern (DD-MMM-YYYY) and the input for the parse("29-11-2018") method. Input to the parse method should follow : DD-MMM-YYYY i,e. 21-AUG-2019

In My Code:

String pattern = "DD-MMM-YYYY";
SimpleDateFormat simpleDateFormat = new SimpleDateFormat(pattern);

    try {
        startDate = simpleDateFormat.parse("29-11-2018");// here no pattern match 
        endDate = simpleDateFormat.parse("28-AUG-2019");// Ok 
    } catch (ParseException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

Neither way is necessarily correct or incorrect, they are just two different kinds of class elements:

• Elements outside the __init__ method are static elements; they belong to the class.
• Elements inside the __init__ method are elements of the object (self); they don't belong to the class.

You'll see it more clearly with some code:

class MyClass:
    static_elem = 123

    def __init__(self):
        self.object_elem = 456

c1 = MyClass()
c2 = MyClass()

# Initial values of both elements
>>> print c1.static_elem, c1.object_elem 
123 456
>>> print c2.static_elem, c2.object_elem
123 456

# Nothing new so far ...

# Let's try changing the static element
MyClass.static_elem = 999

>>> print c1.static_elem, c1.object_elem
999 456
>>> print c2.static_elem, c2.object_elem
999 456

# Now, let's try changing the object element
c1.object_elem = 888

>>> print c1.static_elem, c1.object_elem
999 888
>>> print c2.static_elem, c2.object_elem
999 456

As you can see, when we changed the class element, it changed for both objects. But, when we changed the object element, the other object remained unchanged.

Here's how we did it (keeps all code in one place):

<asp:TextBox ID="TextBox1" runat="server" TextMode="MultiLine"/>
<% TextBox1.Attributes["maxlength"] = "1000"; %>

Just in case someone still using webforms in 2018..

to get the text from a

<option value="1" data-sigla="AC">Acre</option>

uf = $("#selectestado option:selected").attr('data-sigla');

Put the following code after your data is added:

final ScrollView scrollview = ((ScrollView) findViewById(R.id.scrollview));
scrollview.post(new Runnable() {
    @Override
    public void run() {
        scrollview.fullScroll(ScrollView.FOCUS_DOWN);
    }
});

The :&& command repeats the last substitution with the same flags. You can supply the additional range(s) to it (and concatenate as many as you like):

:6,10s/<search_string>/<replace_string>/g | 14,18&&

If you have many ranges though, I'd rather use a loop:

:for range in split('6,10 14,18')| exe range 's/<search_string>/<replace_string>/g' | endfor

You could use a regular expression like this

If Regex.IsMatch(number, "^[0-9 ]+$") Then

...

End If

I just figured out how to remove this gradle error, follow the following steps.

1. Go to "File".
2. Click on Invalidate Cache/ Restart.
3. Again click on Invalidate Cache / Restart(On dialoge window).

Let the gradle build without any interruption.

Thank You! Regards, hope this will help.

Just store the index generated in a variable, and then access the array using this varaible:

int idx = new Random().nextInt(fruits.length);
String random = (fruits[idx]);

P.S. I usually don't like generating new Random object per randoization - I prefer using a single Random in the program - and re-use it. It allows me to easily reproduce a problematic sequence if I later find any bug in the program.

According to this approach, I will have some variable Random r somewhere, and I will just use:

int idx = r.nextInt(fruits.length)

However, your approach is OK as well, but you might have hard time reproducing a specific sequence if you need to later on.

Regular grammar is either right or left linear, whereas context free grammar is basically any combination of terminals and non-terminals. Hence you can see that regular grammar is a subset of context-free grammar.

So for a palindrome for instance, is of the form,

S->ABA
A->something
B->something

You can clearly see that palindromes cannot be expressed in regular grammar since it needs to be either right or left linear and as such cannot have a non-terminal on both side.

Since regular grammars are non-ambiguous, there is only one production rule for a given non-terminal, whereas there can be more than one in the case of a context-free grammar.

I have made a query for you. This will give you Recursive Category with a Single Query:

SELECT id,NAME,'' AS subName,'' AS subsubName,'' AS subsubsubName FROM Table1 WHERE prent is NULL
UNION 
SELECT b.id,a.name,b.name AS subName,'' AS subsubName,'' AS subsubsubName FROM Table1 AS a LEFT JOIN Table1 AS b ON b.prent=a.id WHERE a.prent is NULL AND b.name IS NOT NULL 
UNION 
SELECT c.id,a.name,b.name AS subName,c.name AS subsubName,'' AS subsubsubName FROM Table1 AS a LEFT JOIN Table1 AS b ON b.prent=a.id LEFT JOIN Table1 AS c ON c.prent=b.id WHERE a.prent is NULL AND c.name IS NOT NULL 
UNION 
SELECT d.id,a.name,b.name AS subName,c.name AS subsubName,d.name AS subsubsubName FROM Table1 AS a LEFT JOIN Table1 AS b ON b.prent=a.id LEFT JOIN Table1 AS c ON c.prent=b.id LEFT JOIN Table1 AS d ON d.prent=c.id WHERE a.prent is NULL AND d.name IS NOT NULL 
ORDER BY NAME,subName,subsubName,subsubsubName

Here is a fiddle.

According to Microsoft's MSDN, the lock is equivalent to:

object __lockObj = x;
bool __lockWasTaken = false;
try
{
    System.Threading.Monitor.Enter(__lockObj, ref __lockWasTaken);
    // Your code...
}
finally
{
    if (__lockWasTaken) System.Threading.Monitor.Exit(__lockObj);
}

If you need to create locks in runtime, you can use open source DynaLock. You can create new locks in run-time and specify boundaries to the locks with context concept.

DynaLock is open-source and source code is available at GitHub

If you are using Python2.6 or newer, it's convenient to use socket.create_connection

sock = socket.create_connection(address, timeout=10)
sock.settimeout(None)
fileobj = sock.makefile('rb', 0)

The most likely possibility is that it was the most idiomatic choice. Not only is it easy to speak, but rather intuitive to understand. Some could argue, even more so than var.

But I reckon there's a little more history to this.

From Wikipedia:

Dana Scott's LCF language was a stage in the evolution of lambda calculus into modern functional languages. This language introduced the let expression, which has appeared in most functional languages since that time.

State-full imperative languages such as ALGOL and Pascal essentially implement a let expression, to implement restricted scope of functions, in block structures.

I would like to believe this was an inspiration too, for the let in Javascript.

The reason is that the data doesn't match the datatype. I have come across the same issues that I forgot to make the fields match. Though my case is not same as yours, but it shows the similar error message.

The situation is that I copy a table, but accidently I misspell one field, so I change it using the ALTER after creating the database. And the order of fields in both table is not identical. so when I use the INSERT INTO TableName SELECT * FROM TableName, the result showed the similar errors: Operand type clash: datetime is incompatible with uniqueidentifier

This is a simiple example:

use example
go
create table Test1 (
    id int primary key,
    item uniqueidentifier,
    inserted_at datetime
    )
go
create table Test2 (
    id int primary key,
    inserted_at datetime
    )
go
alter table Test2 add item uniqueidentifier;
go

--insert into Test1 (id, item, inserted_at) values (1, newid(), getdate()), (2, newid(), getdate());


insert into Test2 select * from Test1;

select * from Test1;
select * from Test2;

The error message is:

Msg 206, Level 16, State 2, Line 24
Operand type clash: uniqueidentifier is incompatible with datetime

For me, when I do Immediately invoked function, I need to put ; at the end of require().

Error:

const fs = require('fs')

(() => {
  console.log('wow')
})()

Good:

const fs = require('fs');

(() => {
  console.log('wow')
})()

I ran into the issue where the class of 'selected' wasn't being added to my menu item. Turns out that you can't have a NavigateUrl on it for whatever reason.

Once I removed the NavigateUrl it applied the 'selected' css class to the a tag and I was able to apply the background style with:

div.menu ul li a.static.selected
{
    background-color: #bfcbd6 !important;
    color: #465c71 !important;
    text-decoration: none !important;
}

Disclaimer: the following solution doesn't provide atomicity.

Starting with v2.8 you really want to use the SCAN command instead of KEYS[1]. The following Bash script demonstrates deletion of keys by pattern:

#!/bin/bash

if [ $# -ne 3 ] 
then
  echo "Delete keys from Redis matching a pattern using SCAN & DEL"
  echo "Usage: $0 <host> <port> <pattern>"
  exit 1
fi

cursor=-1
keys=""

while [ $cursor -ne 0 ]; do
  if [ $cursor -eq -1 ]
  then
    cursor=0
  fi

  reply=`redis-cli -h $1 -p $2 SCAN $cursor MATCH $3`
  cursor=`expr "$reply" : '\([0-9]*[0-9 ]\)'`
  keys=${reply##[0-9]*[0-9 ]}
  redis-cli -h $1 -p $2 DEL $keys
done

[1] KEYS is a dangerous command that can potentially result in a DoS. The following is a quote from its documentation page:

Warning: consider KEYS as a command that should only be used in production environments with extreme care. It may ruin performance when it is executed against large databases. This command is intended for debugging and special operations, such as changing your keyspace layout. Don't use KEYS in your regular application code. If you're looking for a way to find keys in a subset of your keyspace, consider using sets.

UPDATE: a one liner for the same basic effect -

$ redis-cli --scan --pattern "*:foo:bar:*" | xargs -L 100 redis-cli DEL

Best : in EF6 => .RemoveRange()

Example:

db.Table.RemoveRange(db.Table.Where(x => Field == "Something"));

    <html>
<head>
<title>Untitled Document</title>
</head>
<body>
<form id="form1" name="form1" method="get" action="display.php">
  <table width="300" border="1">
    <tr>
      <td><label>Multiple Selection </label>&nbsp;</td>
      <td><select name="select2[]" size="3" multiple="multiple" tabindex="1">
        <option value="11">eleven</option>
        <option value="12">twelve</option>
        <option value="13">thirette</option>
        <option value="14">fourteen</option>
        <option value="15">fifteen</option>
        <option value="16">sixteen</option>
        <option value="17">seventeen</option>
        <option value="18">eighteen</option>
        <option value="19">nineteen</option>
        <option value="20">twenty</option>
      </select>
      </td>
    </tr>
    <tr>
      <td>&nbsp;</td>
      <td><input type="submit" name="Submit" value="Submit" tabindex="2" /></td>
    </tr>
  </table>
</form>
</body>
</html>

You can iterate it directly like this

foreach ($_GET['select2'] as $value)
    echo $value."\n";

or you can do it like this

$selectvalue=$_GET['select2'];
foreach ($selectvalue as $value)
    echo $value."\n"; 

I agree that the way to do is to redirect to the new controller in usual cases.

I came across a use case where I needed to display the same page to 2 different kind of users (backend user previewing the page of a frontend user) so in my opinion what I needed was genuinely to call the frontend controller from the backend controller.

I solved the problem by making the frontend method static and wrapping it in another method. Hope it helps!

//==========
// Frontend
//==========
function profile()
{
   //Access check

   //Get profile id
   $id = get_user_id();

   return self::_profile($id);
}

static function _profile($id)
{
   $CI = &get_instance();
   //Prepare page
   //Load view
}

//==========
// Backend
//==========
function preview_profile($id)
{
   $this->load->file('controllers/frontend.php', false);

   Frontend::_profile($id);
}

Bootstrap + contenteditable + multiline placeholder

Demo: https://jsfiddle.net/39mptojs/4/

based on the @cyrbil and @daniel answer

Using Bootstrap, jQuery and https://github.com/gr2m/bootstrap-expandable-input to enable placeholder in contenteditable.

Using "placeholder replace" javascript and adding "white-space: pre" to css, multiline placeholder is shown.

Html:

<div class="form-group">
    <label for="exampleContenteditable">Example contenteditable</label>
    <div id="exampleContenteditable" contenteditable="true" placeholder="test\nmultiple line\nhere\n\nTested on Windows in Chrome 41, Firefox 36, IE 11, Safari 5.1.7 ...\nCredits StackOveflow: .placeholder.replace() trick, white-space:pre" class="form-control">
    </div>
</div>

Javascript:

$(document).ready(function() {
    $('div[contenteditable="true"]').each(function() {
        var s=$(this).attr('placeholder');
        if (s) {
            var s1=s.replace(/\\n/g, String.fromCharCode(10));
            $(this).attr('placeholder',s1);
        }
    });
});

Css:

.form-control[contenteditable="true"] {
    border:1px solid rgb(238, 238, 238);
    padding:3px 3px 3px 3px;
    white-space: pre !important;
    height:auto !important;
    min-height:38px;
}
.form-control[contenteditable="true"]:focus {
    border-color:#66afe9;
}

Given that most recommended error mode for PDO is ERRMODE_EXCEPTION, no direct execute() result verification will ever work. As the code execution won't even reach the condition offered in other answers.

So, there are three possible scenarios to handle the query execution result in PDO:

1. To tell the success, no verification is needed. Just keep with your program flow.
2. To handle the unexpected error, keep with the same - no immediate handling code is needed. An exception will be thrown in case of a database error, and it will bubble up to the site-wide error handler that eventually will result in a common 500 error page.
3. To handle the expected error, like a duplicate primary key, and if you have a certain scenario to handle this particular error, then use a try..catch operator.

For a regular PHP user it sounds a bit alien - how's that, not to verify the direct result of the operation? - but this is exactly how exceptions work - you check the error somewhere else. Once for all. Extremely convenient.

So, in a nutshell: in a regular code you don't need any error handling at all. Just keep your code as is:

$stmt->bindParam(':field1', $field1, PDO::PARAM_STR);
$stmt->bindParam(':field2', $field2, PDO::PARAM_STR);
$stmt->execute();
echo "Success!"; // whatever

On success it will tell you so, on error it will show you the regular error page that your application is showing for such an occasion.

Only in case you have a handling scenario other than just reporting the error, put your insert statement in a try..catch operator, check whether it was the error you expected and handle it; or - if the error was any different - re-throw the exception, to make it possible to be handled by the site-wide error handler usual way. Below is the example code from my article on error handling with PDO:

try {
     $pdo->prepare("INSERT INTO users VALUES (NULL,?,?,?,?)")->execute($data);
} catch (PDOException $e) {
    if ($e->getCode() == 1062) {
        // Take some action if there is a key constraint violation, i.e. duplicate name
    } else {
        throw $e;
    }
}
echo "Success!";

In the code above we are checking for the particular error to take some action and re-throwing the exception for the any other error (no such table for example) which will be reported to a programmer.

While again - just to tell a user something like "Your insert was successful" no condition is ever needed.

select username,
       account_status 
  from dba_users 
 where lock_date is not null;

This will actually give you the list of locked users.

I know it's quite an old question but since it does not have any accepted answer, I suggest you to use the URI.js framework: https://github.com/medialize/URI.js

You can use it to check for malformed URI using a try/catch block:

function isValidURL(url)
{
    try {
        (new URI(url));
        return true;
    }
    catch (e) {
        // Malformed URI
        return false;
    }
}

Of course it will consider something like "%@" as a well formed relative URI... So I suggest you read the URI.js API to perform more checks, for example if you want to make sure that the user entered a well formed absolute URL you may do like this:

function isValidURL(url)
{
    try {
        var uri = new URI(url);
        // URI has a scheme and a host
        return (!!uri.scheme() && !!uri.host());
    }
    catch (e) {
        // Malformed URI
        return false;
    }
}

I had a similar issue, I was sending a POST request (using RESTClient plugin for Firefox) with data in the request body and was receiving the same message.

In my case this happened because I was trying to use HTTPS protocol in a local tomcat instance where HTTPS was not configured.

int length = 0;
length += sprintf(Buffer+length, "Hello World");
length += sprintf(Buffer+length, "Good Morning");
length += sprintf(Buffer+length, "Good Afternoon");

Here is a version with some resistance to errors. It is useful if you do not care when errors happen so long as you can continue along your merry way when they do.

int bytes_added( int result_of_sprintf )
{
    return (result_of_sprintf > 0) ? result_of_sprintf : 0;
}

int length = 0;
length += bytes_added(sprintf(Buffer+length, "Hello World"));
length += bytes_added(sprintf(Buffer+length, "Good Morning"));
length += bytes_added(sprintf(Buffer+length, "Good Afternoon"));

You can use this shell script to clean up the folder and files within C:\Temp source:

del /q "C:\Temp\*"
FOR /D %%p IN ("C:\Temp\*.*") DO rmdir "%%p" /s /q

Create a batch file (say, delete.bat) containing the above command. Go to the location where the delete.bat file is located and then run the command: delete.bat

If it is Long object then You can use longValue == null or you can use Objects.isNull(longValue) method in Java 8 .

Please check Objects for more info.

Know the master key yourself. Don't hard code it.

Use py-bcrypt (bcrypt), powerful hashing technique to generate a password yourself.

Basically you can do this (an idea...)

import bcrypt
from getpass import getpass
master_secret_key = getpass('tell me the master secret key you are going to use')
salt = bcrypt.gensalt()
combo_password = raw_password + salt + master_secret_key
hashed_password = bcrypt.hashpw(combo_password, salt)

save salt and hashed password somewhere so whenever you need to use the password, you are reading the encrypted password, and test against the raw password you are entering again.

This is basically how login should work these days.

You can select multiple classes at once with jQuery like this:

$('.tag, .tag2').click(function() {
    var $this = $(this);
    if ($this.hasClass('tag')) {
        // do stuff
    } else {
        // do other stuff
    }
});

Giving a 2nd parameter to the $() function, scopes the selector so $('.tag', '.tag2') looks for tag within elements with the class tag2.

Some of the core differences between C# and Javascript script syntax in Unity.

http://unity3d.com/learn/tutorials/modules/beginner/scripting/c-sharp-vs-javascript-syntax

but keep in mind C# is the best one to develop in unity

I finally figured out a how to use Maven. From within Eclipse, create a new Maven project.

Download Maven, extract the archive, add the /bin folder to path.

Validate install from command-line by running mvn -v (will print version and java install path)

Change to the project root folder (where pom.xml is located) and run:

mvn dependency:copy-dependencies

All jar-files are downloaded to /target/dependency.

To set another output directory:

mvn dependency:copy-dependencies -DoutputDirectory="c:\temp"

Now it's possible to re-use this Maven-project for all dependency downloads by altering the pom.xml

Add jars to java project by build path -> configure build path -> libraries -> add JARs..

To select data in numerical range you can use BETWEEN which is inclusive.

SELECT JOB FROM MYTABLE WHERE ID BETWEEN 10 AND 15;

The other simple way, use docker-compose with the following lines:

mysql:
  from: mysql:5.7
  volumes:
    - ./database:/tmp/database
  command: mysqld --init-file="/tmp/database/install_db.sql"

Put your database schema into the ./database/install_db.sql. Every time when you build up your container, the install_db.sql will be executed.

I had such problem. Solution was simple :

1. Install python 2.7 64bit version.
2. Export HKEY_LOCAL_MACHINE\SOFTWARE\Python.
3. Remove Python 2.7.
4. insert exported reg file.
5. rename all C:\Python27 to C:\Anaconda ( insert your path ).

P.S. Sorry, for bad grammar.

You might also take a look at the Memoize decorator. You could probably get it to do what you want without too much modification.

Cleaning the build folder (Cmd + Shift + Alt + K) worked for me

append is a jQuery method to append some content or HTML to an element.

$('#example').append('Some text or HTML');

appendChild is a pure DOM method for adding a child element.

document.getElementById('example').appendChild(newElement);

Fastest and easiest way is to use an iframe. Put a frame at the bottom of your page.

<iframe name="frame"></iframe>

And in your form do this.

<form target="frame">
</form>

and to make the frame invisible in your css.

iframe{
  display: none;
}

First, the ++ operator takes precedence over the * operator, and the () operators take precedence over everything else.

Second, the ++number operator is the same as the number++ operator if you're not assigning them to anything. The difference is number++ returns number and then increments number, and ++number increments first and then returns it.

Third, by increasing the value of a pointer, you're incrementing it by the sizeof its contents, that is you're incrementing it as if you were iterating in an array.

So, to sum it all up:

ptr++;    // Pointer moves to the next int position (as if it was an array)
++ptr;    // Pointer moves to the next int position (as if it was an array)
++*ptr;   // The value of ptr is incremented
++(*ptr); // The value of ptr is incremented
++*(ptr); // The value of ptr is incremented
*ptr++;   // Pointer moves to the next int position (as if it was an array). But returns the old content
(*ptr)++; // The value of ptr is incremented
*(ptr)++; // Pointer moves to the next int position (as if it was an array). But returns the old content
*++ptr;   // Pointer moves to the next int position, and then get's accessed, with your code, segfault
*(++ptr); // Pointer moves to the next int position, and then get's accessed, with your code, segfault

As there are a lot of cases in here, I might have made some mistake, please correct me if I'm wrong.

EDIT:

So I was wrong, the precedence is a little more complicated than what I wrote, view it here: http://en.cppreference.com/w/cpp/language/operator_precedence

I was also getting the same issue of breaking constraints in the log, for a viewCircle in the xib. I almost tried everything listed above and nothing was working for me. Then I tried to change the priority of the Height constraint which was breaking in the log(confirmed by adding an identifiers for the constraints on the xib)enter image description here

you can try this (I don't have sql server here today so I can't verify syntax, sorry)

select attributeName
  from tableName
 where CONVERT(varchar,attributeName,101) BETWEEN '03/01/2009' AND '03/31/2009'
   and CONVERT(varchar, attributeName,108) BETWEEN '06:00:00' AND '22:00:00'
   and DATEPART(day,attributeName) BETWEEN 2 AND 4

First, get all the elements

const getAllFormElements = element => Array.from(element.elements).filter(tag => ["select", "textarea", "input"].includes(tag.tagName.toLowerCase()));

Second, do something with them

const pageFormElements = getAllFormElements(document.body);
console.log(pageFormElements);

If you want to use a form, rather than the entire body of the page, you can do it like this

const pageFormElements = getAllFormElements(document.getElementById("my-form"));
console.log(formElements);

The tried and true method for HTML:

1. Replace the & character with &
2. Replace the < character with <
3. Replace the > character with >
4. Optionally surround your HTML sample with <pre> and/or <code> tags.

There is a simple and very common technique by using 2 background images: a crisp and a blurry one. You set the crisp image as a background for the body and the blurry one as a background image for your container. The blurry image must be set to fixed positioning and the alignment is 100% perfect. I used it before and it works.

body {
    background: url(yourCrispImage.jpg) no-repeat;
}

#container {
    background: url(yourBlurryImage.jpg) no-repeat fixed;
}

You can see a working example at the following fiddle: http://jsfiddle.net/jTUjT/5/. Try to resize the browser and see that the alignment never fails.

If only CSS element() was supported by other browsers other than Mozilla's -moz-element() you could create great effects. See this demo with Mozilla.

%USERNAME% will get you the username of the currently running process. Depending on how you are running your batch file, this is not necessarily the same as the name of the current user. For example, you might be running your batch file through a scheduled task, from a service, etc.

Here is a more sure way of getting the username of the currently logged on user by scraping the name of the user that started the explorer.exe task:

for /f "TOKENS=1,2,*" %%a in ('tasklist /FI "IMAGENAME eq explorer.exe" /FO LIST /V') do if /i "%%a %%b"=="User Name:" set _currdomain_user=%%c
for /f "TOKENS=1,2 DELIMS=\" %%a in ("%_currdomain_user%") do set _currdomain=%%a & set _curruser=%%b

When SET QUOTED_IDENTIFIER is OFF, literal strings in expressions can be delimited by single or double quotation marks.

If a literal string is delimited by double quotation marks, the string can contain embedded single quotation marks, such as apostrophes.

seq -w will detect the max input width and normalize the width of the output.

for num in $(seq -w 01 05); do
    ...
done

At time of writing this didn't work on the newest versions of OSX, so you can either install macports and use its version of seq, or you can set the format explicitly:

seq -f '%02g' 1 3
    01
    02
    03

But given the ugliness of format specifications for such a simple problem, I prefer the solution Henk and Adrian gave, which just uses Bash. Apple can't screw this up since there's no generic "unix" version of Bash:

echo {01..05}

Or:

for number in {01..05}; do ...; done

This combined solution worked for me, I wanted equal width columns

<style type="text/css">

    table {
        table-layout: fixed;
        word-wrap: break-word;
    }

        table th, table td {
            overflow: hidden;
        }

</style>

Result :-

http://callmenick.com/2014/02/18/create-an-animated-resizing-header-on-scroll/

This link has a great tutorial with source code that you can play with, showing how to make elements within the header smaller as well as the header itself.

Because those are not compile time constants. Consider the following valid code:

public static final int BAR = new Random().nextInt();

You can only know the value of BAR in runtime.

Jeremy Ruten's idea of using a symlink triggered a thought that hasn't crossed any other answer. Use:

CDPATH=:$HOME/projects

The leading colon is important; it means that if there is a directory 'dir' in the current directory, then 'cd dir' will change to that, rather than hopping off somewhere else. With the value set as shown, you can do:

cd java

and, if there is no sub-directory called java in the current directory, then it will take you directly to $HOME/projects/java - no aliases, no scripts, no dubious execs or dot commands.

My $HOME is /Users/jleffler; my $CDPATH is:

:/Users/jleffler:/Users/jleffler/mail:/Users/jleffler/src:/Users/jleffler/src/perl:/Users/jleffler/src/sqltools:/Users/jleffler/lib:/Users/jleffler/doc:/Users/jleffler/work

Can someone point me to a book or website which explains these basics clearly ?

You can check this XML Tutorial with examples.

But what about the encoding part ? Why is that necessary ?

W3C provides explanation about encoding :

"The document character set for XML and HTML 4.0 is Unicode (aka ISO 10646). This means that HTML browsers and XML processors should behave as if they used Unicode internally. But it doesn't mean that documents have to be transmitted in Unicode. As long as client and server agree on the encoding, they can use any encoding that can be converted to Unicode..."

I have faced this issue when I created a new ES2015 class where the property name was equal to the method name.

e.g.:

class Test{
  constructor () {
    this.test = 'test'
  }

  test (test) {
    this.test = test
  }
}

let t = new Test()
t.test('new Test')

Please note this implementation was in NodeJS 6.10.

As a workaround (if you do not want to use the boring 'setTest' method name), you could use a prefix for your 'private' properties (like _test).

Open your Developer Tools in jsfiddle.

You can get all 4-6gram using the code without other package below:

from itertools import chain

def get_m_2_ngrams(input_list, min, max):
    for s in chain(*[get_ngrams(input_list, k) for k in range(min, max+1)]):
        yield ' '.join(s)

def get_ngrams(input_list, n):
    return zip(*[input_list[i:] for i in range(n)])

if __name__ == '__main__':
    input_list = ['I', 'am', 'aware', 'that', 'nltk', 'only', 'offers', 'bigrams', 'and', 'trigrams', ',', 'but', 'is', 'there', 'a', 'way', 'to', 'split', 'my', 'text', 'in', 'four-grams', ',', 'five-grams', 'or', 'even', 'hundred-grams']
    for s in get_m_2_ngrams(input_list, 4, 6):
        print(s)

the output is below:

I am aware that
am aware that nltk
aware that nltk only
that nltk only offers
nltk only offers bigrams
only offers bigrams and
offers bigrams and trigrams
bigrams and trigrams ,
and trigrams , but
trigrams , but is
, but is there
but is there a
is there a way
there a way to
a way to split
way to split my
to split my text
split my text in
my text in four-grams
text in four-grams ,
in four-grams , five-grams
four-grams , five-grams or
, five-grams or even
five-grams or even hundred-grams
I am aware that nltk
am aware that nltk only
aware that nltk only offers
that nltk only offers bigrams
nltk only offers bigrams and
only offers bigrams and trigrams
offers bigrams and trigrams ,
bigrams and trigrams , but
and trigrams , but is
trigrams , but is there
, but is there a
but is there a way
is there a way to
there a way to split
a way to split my
way to split my text
to split my text in
split my text in four-grams
my text in four-grams ,
text in four-grams , five-grams
in four-grams , five-grams or
four-grams , five-grams or even
, five-grams or even hundred-grams
I am aware that nltk only
am aware that nltk only offers
aware that nltk only offers bigrams
that nltk only offers bigrams and
nltk only offers bigrams and trigrams
only offers bigrams and trigrams ,
offers bigrams and trigrams , but
bigrams and trigrams , but is
and trigrams , but is there
trigrams , but is there a
, but is there a way
but is there a way to
is there a way to split
there a way to split my
a way to split my text
way to split my text in
to split my text in four-grams
split my text in four-grams ,
my text in four-grams , five-grams
text in four-grams , five-grams or
in four-grams , five-grams or even
four-grams , five-grams or even hundred-grams

you can find more detail on this blog

i had same problem , try this :

void client_handler(Socket client) // set 'KeepAlive' true
{
    while (true)
    {
        try
        {
            if (client.Connected)
            {

            }
            else
            { // client disconnected
                break;
            }
        }
        catch (Exception)
        {
            client.Poll(4000, SelectMode.SelectRead);// try to get state
        }
    }
}

As far as why it doesn't work, it might be helpful to understand covariance and contravariance.

Just to show why this shouldn't work, here is a change to the code you provided:

void DoesThisWork()
{
     List<C> DerivedList = new List<C>();
     List<A> BaseList = DerivedList;
     BaseList.Add(new B());

     C FirstItem = DerivedList.First();
}

Should this work? The First item in the list is of Type "B", but the type of the DerivedList item is C.

Now, assume that we really just want to make a generic function that operates on a list of some type which implements A, but we don't care what type that is:

void ThisWorks<T>(List<T> GenericList) where T:A
{

}

void Test()
{
     ThisWorks(new List<B>());
     ThisWorks(new List<C>());
}

function valid(id)
    {
        var textVal=document.getElementById(id).value;
        if (!textVal.match("Tryit") 
        {
            alert("Field says Tryit");
            return false;
        } 
        else 
        {
            return true;
        }
     }

Use this for expressing things

Take it that forward declaration will get your code to compile (obj is created). Linking however (exe creation) will not be successfull unless the definitions are found.

UPDATE: Turned my solution into a stand-alone python script.

This solution has saved me more than once. Hopefully others find it useful. This python script will find any jupyter kernel using more than cpu_threshold CPU and prompts the user to send a SIGINT to the kernel (KeyboardInterrupt). It will keep sending SIGINT until the kernel's cpu usage goes below cpu_threshold. If there are multiple misbehaving kernels it will prompt the user to interrupt each of them (ordered by highest CPU usage to lowest). A big thanks goes to gcbeltramini for writing code to find the name of a jupyter kernel using the jupyter api. This script was tested on MACOS with python3 and requires jupyter notebook, requests, json and psutil.

Put the script in your home directory and then usage looks like:

python ~/interrupt_bad_kernels.py
Interrupt kernel chews cpu.ipynb; PID: 57588; CPU: 2.3%? (y/n) y

Script code below:

from os import getpid, kill
from time import sleep
import re
import signal

from notebook.notebookapp import list_running_servers
from requests import get
from requests.compat import urljoin
import ipykernel
import json
import psutil


def get_active_kernels(cpu_threshold):
    """Get a list of active jupyter kernels."""
    active_kernels = []
    pids = psutil.pids()
    my_pid = getpid()

    for pid in pids:
        if pid == my_pid:
            continue
        try:
            p = psutil.Process(pid)
            cmd = p.cmdline()
            for arg in cmd:
                if arg.count('ipykernel'):
                    cpu = p.cpu_percent(interval=0.1)
                    if cpu > cpu_threshold:
                        active_kernels.append((cpu, pid, cmd))
        except psutil.AccessDenied:
            continue
    return active_kernels


def interrupt_bad_notebooks(cpu_threshold=0.2):
    """Interrupt active jupyter kernels. Prompts the user for each kernel."""

    active_kernels = sorted(get_active_kernels(cpu_threshold), reverse=True)

    servers = list_running_servers()
    for ss in servers:
        response = get(urljoin(ss['url'].replace('localhost', '127.0.0.1'), 'api/sessions'),
                       params={'token': ss.get('token', '')})
        for nn in json.loads(response.text):
            for kernel in active_kernels:
                for arg in kernel[-1]:
                    if arg.count(nn['kernel']['id']):
                        pid = kernel[1]
                        cpu = kernel[0]
                        interrupt = input(
                            'Interrupt kernel {}; PID: {}; CPU: {}%? (y/n) '.format(nn['notebook']['path'], pid, cpu))
                        if interrupt.lower() == 'y':
                            p = psutil.Process(pid)
                            while p.cpu_percent(interval=0.1) > cpu_threshold:
                                kill(pid, signal.SIGINT)
                                sleep(0.5)

if __name__ == '__main__':
    interrupt_bad_notebooks()

And if you want to access more than one column at a time you could do:

>>> test = np.arange(9).reshape((3,3))
>>> test
array([[0, 1, 2],
       [3, 4, 5],
       [6, 7, 8]])
>>> test[:,[0,2]]
array([[0, 2],
       [3, 5],
       [6, 8]])

Seems like you need to strip the URL from the URL, so you can do it in a following way:

request.getRequestURL().toString().replace(request.getRequestURI(), "")

Common Resource Grep (crgrep) will search for string matches in tables/columns by name or content and supports a number of DBs, including SQLServer, Oracle and others. Full wild-carding and other useful options.

It's opensource (I'm the author).

http://sourceforge.net/projects/crgrep/

The reason you cannot cast List<String> to List<Object> is that it would allow you to violate the constraints of the List<String>.

Think about the following scenario: If I have a List<String>, it is supposed to only contain objects of type String. (Which is a final class)

If I can cast that to a List<Object>, then that allows me to add Object to that list, thus violating the original contract of List<String>.

Thus, in general, if class C inherits from class P, you cannot say that GenericType<C> also inherits from GenericType<P>.

N.B. I already commented on this in a previous answer but wanted to expand on it.

Syntax is Shown below:

"your condition"? "step if true":"step if condition fails"

Kindly use the below command:

ps -p $$ | tail -1 | awk '{print $4}'

You can also check all the EditText Strings in one If condition: like this

if (mString.matches("") || fString.matches("") || gender==null || docString.matches("") || dString.matches("")) {
                Toast.makeText(WriteActivity.this,"Data Incomplete", Toast.LENGTH_SHORT).show();
            }

Thanks to Vinod for the well presented answer.

I got the same error as Mick Byrne when I followed the steps above. Turning it back to All Unassigned sorted it but I had to tweak a few other things as well:

• Add the user my site was running under to the users on the Security Tab in SMTP Virtual Server.
• Changed the value in the mailSettings > network > host attribute in my web.config to the specific server IP (for example 192.168.100.120) as opposed to localhost (which was pointing at 127.0.0.1 in the hosts file).

Hope this saves someone a few mins of messing about.

There is a way using CSS!

If you set your width depending on the parent container you can set the height to 0 and set padding-bottom to the percentage which will be calculated depending on the current width:

.some_element {
    position: relative;
    width: 20%;
    height: 0;
    padding-bottom: 20%;
}

This works well in all major browsers.

JSFiddle: https://jsfiddle.net/ayb9nzj3/

Bootstrap4

Remove a list’s bullets and apply some light margin with a combination of two classes, .list-inline and .list-inline-item.

<ul class="list-inline">
   <li class="list-inline-item"><a class="social-icon text-xs-center" target="_blank" href="#">FB</a></li>
   <li class="list-inline-item"><a class="social-icon text-xs-center" target="_blank" href="#">G+</a></li>
   <li class="list-inline-item"><a class="social-icon text-xs-center" target="_blank" href="#">T</a></li>
</ul>

Class Parent cannot be declared because it is PHP reserved keyword so in effect it's already in use

If you need the variable set before you're starting the notebook, the only solution which worked for me was env VARIABLE=$VARIABLE jupyter notebook with export VARIABLE=value in .bashrc.

In my case tensorflow needs the exported variable for successful importing it in a notebook.

nginx is useful for forwarding HTTP on many platforms including Windows. It's easy to setup and extend with more advanced configuration. A basic configuration could look something like this:

events {}

http {
     server {

        listen 192.168.1.111:4422;

        location / {
            proxy_pass http://192.168.2.33:80/;
        }
     }
}

PreparedStatement ps=con.prepareStatement("select * from stud");

ResultSet rs=ps.executeQuery();

ResultSetMetaData rsmd=rs.getMetaData();

System.out.println("columns: "+rsmd.getColumnCount());  
System.out.println("Column Name of 1st column: "+rsmd.getColumnName(1));  
System.out.println("Column Type Name of 1st column: "+rsmd.getColumnTypeName(1)); 

What do you mean "not working"?

jQuery detects that you're trying to create a SCRIPT element and will automatically run the contents of the element within the global context. Are you telling me that this doesn't work for you? -

$('#someElement').append('<script>alert("WORKING");</script>');

Edit: If you're not seeing the SCRIPT element in the DOM (in Firebug for example) after you run the command that's because jQuery, like I said, will run the code and then will delete the SCRIPT element - I believe that SCRIPT elements are always appended to the body... but anyway - placement has absolutely no bearing on code execution in this situation.

There are few things to set up so your link in the browser will look like http://yourdomain.com/path and these are your angular config + server side

1) AngularJS

$routeProvider
  .when('/path', {
    templateUrl: 'path.html',
  });
$locationProvider
  .html5Mode(true);

2) server side, just put .htaccess inside your root folder and paste this

RewriteEngine On 
Options FollowSymLinks

RewriteBase /

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ /#/$1 [L]

More interesting stuff to read about html5 mode in angularjs and the configuration required per different environment https://github.com/angular-ui/ui-router/wiki/Frequently-Asked-Questions#how-to-configure-your-server-to-work-with-html5mode Also this question might help you $location / switching between html5 and hashbang mode / link rewriting

We just started using this slick tool: https://plugins.jquery.com/tablesorter/

There is a video on its use at: http://www.highoncoding.com/Articles/695_Sorting_GridView_Using_JQuery_TableSorter_Plug_in.aspx

    $('#tableRoster').tablesorter({
        headers: {
            0: { sorter: false },
            4: { sorter: false }
        }
    });

With a simple table

<table id="tableRoster">
        <thead> 
                  <tr>
                    <th><input type="checkbox" class="rCheckBox" value="all" id="rAll" ></th>
                    <th>User</th>
                    <th>Verified</th>
                    <th>Recently Accessed</th>
                    <th>&nbsp;</th>
                  </tr>
        </thead>

Put your style.css directly into the webapp/css folder, not into the WEB-INF folder.

Then add the following code into your spring-dispatcher-servlet.xml

<mvc:resources mapping="/css/**" location="/css/" />

and then add following code into your jsp page

<link rel="stylesheet" type="text/css" href="css/style.css"/>

I hope it will work.

My solutions in one of my own sites, with a table:

$.getJSON("sections/view_numbers_update.php", function(data) {
 $.each(data, function(index, objNumber) {
  $('#tr_' + objNumber.intID).find("td").eq(3).html(objNumber.datLastCalled);
  $('#tr_' + objNumber.intID).find("td").eq(4).html(objNumber.strStatus);
  $('#tr_' + objNumber.intID).find("td").eq(5).html(objNumber.intDuration);
  $('#tr_' + objNumber.intID).find("td").eq(6).html(objNumber.blnWasHuman);
 });
});

sections/view_numbers_update.php Returns something like:

[{"intID":"19","datLastCalled":"Thu, 10 Jan 13 08:52:20 +0000","strStatus":"Completed","intDuration":"0:04 secs","blnWasHuman":"Yes","datModified":1357807940},
{"intID":"22","datLastCalled":"Thu, 10 Jan 13 08:54:43 +0000","strStatus":"Completed","intDuration":"0:00 secs","blnWasHuman":"Yes","datModified":1357808079}]

HTML table:

<table id="table_numbers">
 <tr>
  <th>[...]</th>
  <th>[...]</th>
  <th>[...]</th>
  <th>Last Call</th>
  <th>Status</th>
  <th>Duration</th>
  <th>Human?</th>
  <th>[...]</th>
 </tr>
 <tr id="tr_123456">
  [...]
 </tr>
</table>

This essentially gives every row a unique id preceding with 'tr_' to allow for other numbered element ids, at server script time. The jQuery script then just gets this TR_[id] element, and fills the correct indexed cell with the json return.

The advantage is you could get the complete array from the DB, and either foreach($array as $record) to create the table html, OR (if there is an update request) you can die(json_encode($array)) before displaying the table, all in the same page, but same display code.

I had this pop up recently where a function was being called prior to its definition in the same file, and it didnt have the returned value assigned to a variable. Adding a var for the return value to be assigned to made the error go away.

You can do it like this

mylist = ['a', 'b', 'c', 'd', 'e']
myorder = [3, 2, 0, 1, 4]
mylist = [mylist[i] for i in myorder]
print(mylist)         # prints: ['d', 'c', 'a', 'b', 'e']

You can increase the capacity of the stack by the following :

import sys
sys.setrecursionlimit(10000)

Note that the onload event doesn't seem to fire if the iframe is loaded when offscreen. This frequently occurs when using "Open in New Window" /w tabs.

You should use a delegate type and specify that as your command parameter. You could use one of the built in delegate types - Action and Func.

In your case, it looks like your delegate takes two parameters, and returns a result, so you could use Func:

List<IJob> GetJobs(Func<FullTimeJob, Student, FullTimeJob> projection)

You could then call your GetJobs method passing in a delegate instance. This could be a method which matches that signature, an anonymous delegate, or a lambda expression.

P.S. You should use PascalCase for method names - GetJobs, not getJobs.

Step1: Ensure SQLEXPRESS and LocalDB installed on your system Go to SQL SERVER Configuration Manager => SQL Server Service

If nothing listed for SQL Server services, install below components (for 64 bit OS) 1. SqlLocalDB 2. SQLEXPR_x64_ENU 3. SQLEXPRADV_x64_ENU 4. SQLEXPRWT_x64_ENU

Step2: Open Management Studios Enter . (Dot) as server name and click on Connect [enter image description here][2] Else Enter .\SQLEXPRESS as server name and click on connect

Run: python -c "import ssl; print(ssl.get_default_verify_paths())" to check the current paths which are used to verify the certificate. Add your company's root certificate to one of those.

The path openssl_capath_env points to the environment variable: SSL_CERT_DIR.

If SSL_CERT_DIR doesn't exist, you will need to create it and point it to a valid folder within your filesystem. You can then add your certificate to this folder to use it.

Assuming that you have a collection ${roles} of the elements to put in the combo, and ${selected} the selected element, It would go like this:

<select name='role'>
    <option value="${selected}" selected>${selected}</option>
    <c:forEach items="${roles}" var="role">
        <c:if test="${role != selected}">
            <option value="${role}">${role}</option>
        </c:if>
    </c:forEach>
</select>

UPDATE (next question)

You are overwriting the attribute "productSubCategoryName". At the end of the for loop, the last productSubCategoryName.

Because of the limitations of the expression language, I think the best way to deal with this is to use a map:

Map<String,Boolean> map = new HashMap<String,Boolean>();
for(int i=0;i<userProductData.size();i++){
    String productSubCategoryName=userProductData.get(i).getProductSubCategory();
    System.out.println(productSubCategoryName);
    map.put(productSubCategoryName, true);
}
request.setAttribute("productSubCategoryMap", map);

And then in the JSP:

<select multiple="multiple" name="prodSKUs">
    <c:forEach items="${productSubCategoryList}" var="productSubCategoryList">
        <option value="${productSubCategoryList}" ${not empty productSubCategoryMap[productSubCategoryList] ? 'selected' : ''}>${productSubCategoryList}</option>
    </c:forEach>
</select>

C++ operations are: & | ^ ~ (for and, or, xor and not bitwise operations). Also of interest are >> and <<, which are bitshift operations.

So, to test for a bit being set in a flag, you would use: if (flags & 8) //tests bit 4 has been set

Use preg_grep

$array = preg_grep(
    '/(my\n+string\n+)/i',
    array( 'file' , 'my string  => name', 'this')
);

AST_NODE* Statement(AST_NODE* node)

is missing a semicolon (a major clue was the error message "In function ‘Statement’: ...") and so is line 24,

   return node

(Once you fix those, you will encounter other problems, some of which are mentioned by others here.)

It is important to note that each jQuery() call must actually return. If an exception is thrown in one, subsequent (unrelated) calls will never be executed.

This applies regardless of syntax. You can use jQuery(), jQuery(function() {}), $(document).ready(), whatever you like, the behavior is the same. If an early one fails, subsequent blocks will never be run.

This was a problem for me when using 3rd-party libraries. One library was throwing an exception, and subsequent libraries never initialized anything.

I've run a benchmark today and came up with interesting result. Among these three:

var count1 = typeof(TestEnum).GetFields().Length;
var count2 = Enum.GetNames(typeof(TestEnum)).Length;
var count3 = Enum.GetValues(typeof(TestEnum)).Length;

GetNames(enum) is by far the fastest!

|         Method |      Mean |    Error |   StdDev |
|--------------- |---------- |--------- |--------- |
| DeclaredFields |  94.12 ns | 0.878 ns | 0.778 ns |
|       GetNames |  47.15 ns | 0.554 ns | 0.491 ns |
|      GetValues | 671.30 ns | 5.667 ns | 4.732 ns |

A bit late in the game, i know... but this is what i recently did. It is slightly different than yours, but allows the programmer to dictate what the equality operation needs to be (predicate). Which i find very useful when dealing with different types, since i then have a generic way of doing it regardless of object type and <T> built in equality operator.

It also has a very very small memory footprint, and is very, very fast/efficient... if you care about that.

At worse, you'll just add this to your list of extensions.

Anyway... here it is.

 public static int IndexOf<T>(this IEnumerable<T> source, Func<T, bool> predicate)
 {
     int retval = -1;
     var enumerator = source.GetEnumerator();

     while (enumerator.MoveNext())
     {
         retval += 1;
         if (predicate(enumerator.Current))
         {
             IDisposable disposable = enumerator as System.IDisposable;
             if (disposable != null) disposable.Dispose();
             return retval;
         }
     }
     IDisposable disposable = enumerator as System.IDisposable;
     if (disposable != null) disposable.Dispose();
     return -1;
 }

Hopefully this helps someone.

Strictly stated you must check all of the following: defined, not empty AND not None.

For "normal" variables it makes a difference if defined and set or not set. See foo and bar in the example below. Both are defined but only foo is set.

On the other side registered variables are set to the result of the running command and vary from module to module. They are mostly json structures. You probably must check the subelement you're interested in. See xyz and xyz.msg in the example below:

cat > test.yml <<EOF
- hosts: 127.0.0.1

  vars:
    foo: ""          # foo is defined and foo == '' and foo != None
    bar:             # bar is defined and bar != '' and bar == None

  tasks:

  - debug:
      msg : ""
    register: xyz    # xyz is defined and xyz != '' and xyz != None
                     # xyz.msg is defined and xyz.msg == '' and xyz.msg != None

  - debug:
      msg: "foo is defined and foo == '' and foo != None"
    when: foo is defined and foo == '' and foo != None

  - debug:
      msg: "bar is defined and bar != '' and bar == None"
    when: bar is defined and bar != '' and bar == None

  - debug:
      msg: "xyz is defined and xyz != '' and xyz != None"
    when: xyz is defined and xyz != '' and xyz != None
  - debug:
      msg: "{{ xyz }}"

  - debug:
      msg: "xyz.msg is defined and xyz.msg == '' and xyz.msg != None"
    when: xyz.msg is defined and xyz.msg == '' and xyz.msg != None
  - debug:
      msg: "{{ xyz.msg }}"
EOF
ansible-playbook -v test.yml

It's actually do-able without JavaScript, but using pure CSS + HTML with sticky position. Just add "position:sticky" to the cells you'd like to freeze.

For building a table, you can either use or CSS grid, and this technique works on both of them.

Here is an example formatting with table tag ( live demo here ):

<table>
  <tr><th class="head"></th class="head"><th></th> ... </tr>
  <tr><th class="head"></th>             <th></th> ... </tr>
...
</table>
<style type="text/css">
  .head { position: sticky; top: 0; left: 0;}
</style>

And here is an example with CSS Grid ( live demo here ):

<div class="grid">
   <!-- cells to freeze -->
   <div class="entry head"></div>
   <div class="entry head"></div>
   ...
   <!-- normal cells -->
   <div class="entry"></div>
   ...
</div>
<style type="text/css">
  .grid {
    display: grid;
    grid-template-columns: repeat(<your-cell-count>, <cell-size>); 
  } 
  .entry.head { position: sticky; top: 0; left: 0 }
</style>

You probably will need to take care of the cells frozen both horizontally and vertically ( e.g., setting a z-index larger than others ) but it will be still CSS thing.

I think the main drawback of this approach is, probably, the browser compatibility issue. Check Can I Use CSS-sticky and Can I use CSS grid before using these techniques.

IBAction and IBOutlets are used to hook up your interface made in Interface Builder with your controller. If you wouldn't use Interface Builder and build your interface completely in code, you could make a program without using them. But in reality most of us use Interface Builder, once you want to get some interactivity going in your interface, you will have to use IBActions and IBoutlets.

Unfortunately, the file must be locked for updates unless you're using Office 2010 and SharePoint 2010 together. This means that only one user per time can edit a file. The locking and version tracking capabilities of SharePoint are excellent, and this makes it a great tool for the type of collaboration you're talking about, but you would have to split documents into multiple files in order to extend the amount that could be edited at a time. For instance, we sometimes unmerge documents into technical, requirements, and financials sections so that the 3 experts required for the review can work concurrently. We then merge when everyone is finished.

In case the formatting needs to be done on Crystal Report side.

Simple way.

Crystal Report Design Window->Right click on the date field->format Field->Customize the date format per your need.

Works effectively.

Actually, you only need to use the default argument to add_argument as in this test.py script:

import argparse

if __name__ == '__main__':

    parser = argparse.ArgumentParser()
    parser.add_argument('--example', default=1)
    args = parser.parse_args()
    print(args.example)

test.py --example
% 1
test.py --example 2
% 2

Details are here.

Try this piece of code which is checking the 400 error messages

huc = (HttpURLConnection)(new URL(url).openConnection());

huc.setRequestMethod("HEAD");

huc.connect();

respCode = huc.getResponseCode();

if(respCode >= 400) {
    System.out.println(url+" is a broken link");
} else {
    System.out.println(url+" is a valid link");
}

You could use the rename() function :

rename('foo/test.php', 'bar/test.php');

This however will move the file not copy

The attribute align=middle sets vertical alignment. To set horizontal alignment using HTML, you can wrap the element inside a center element and remove all the CSS you have now.

<center><img src=_x000D_
"http://icons.iconarchive.com/icons/rokey/popo-emotions/128/big-smile-icon.png"_x000D_
width="42" height="42"></center>

If you would rather do it in CSS, there are several ways. A simple one is to set text-align on a container:

<div style="text-align: center"><img src=_x000D_
"http://icons.iconarchive.com/icons/rokey/popo-emotions/128/big-smile-icon.png"_x000D_
width="42" height="42"></div>

if myProp is an object, it may not be changed in usual. so, watch will never be triggered. the reason of why myProp not be changed is that you just set some keys of myProp in most cases. the myProp itself is still the one. try to watch props of myProp, like "myProp.a",it should work.

If you know the file is in your current directory, I would use:

ls -lt | head

This lists your most recently modified files and directories in order. In fact, I use it so much I have it aliased to 'lh'.

Personally, I quite like the C++2011 approach because it neither requires you to use sizeof() nor to remember adjusting the array bounds if you ever change the array bounds (and you can define the relevant function in C++2003 if you want, too):

#include <iterator>
#include <vector>
int x[] = { 1, 2, 3, 4, 5 };
std::vector<int> v(std::begin(x), std::end(x));

Obviously, with C++2011 you might want to use initializer lists anyway:

std::vector<int> v({ 1, 2, 3, 4, 5 });

For projects default:

1. Close current Project (File->Close project)

You'll get a Welcome to Android Studio Dialog. In that:

2. Click on Configure -> Project Defaults -> Project Structure

3. Click on SDK Location in the left column

4. Put the path to the Android SDK in "Android SDK location" field.

(Example SDK location: C:\android-sdk; I have sub-folders like add-ons, platforms etc under C:\android-sdk)

5. Click OK to save changes

6. Have fun!

Following steps were for older versions(<1.0) of Android Studio

4. In the middle column Click on Android SDK (with Android icon) OR click + on the top if you don't see an entry with Android icon.

5. Change SDK Home Path and select valid Target.

Working with dplyr

library(dplyr)

df <- data.frame(A = factor(LETTERS[1:5]),
                 B = 1:5, C = as.logical(c(1, 1, 0, 0, 1)),
                 D = letters[1:5],
                 E = paste(LETTERS[1:5], letters[1:5]),
                 stringsAsFactors = FALSE)

str(df)

we get:

'data.frame':   5 obs. of  5 variables:
 $ A: Factor w/ 5 levels "A","B","C","D",..: 1 2 3 4 5
 $ B: int  1 2 3 4 5
 $ C: logi  TRUE TRUE FALSE FALSE TRUE
 $ D: chr  "a" "b" "c" "d" ...
 $ E: chr  "A a" "B b" "C c" "D d" ...

Now, we can convert all chr to factors:

df <- df%>%mutate_if(is.character, as.factor)
str(df)

And we get:

'data.frame':   5 obs. of  5 variables:
 $ A: Factor w/ 5 levels "A","B","C","D",..: 1 2 3 4 5
 $ B: int  1 2 3 4 5
 $ C: logi  TRUE TRUE FALSE FALSE TRUE
 $ D: chr  "a" "b" "c" "d" ...
 $ E: chr  "A a" "B b" "C c" "D d" ...

Let's provide also other solutions:

With base package:

df[sapply(df, is.character)] <- lapply(df[sapply(df, is.character)], 
                                                           as.factor)

With dplyr 1.0.0

df <- df%>%mutate(across(where(is.factor), as.character))

With purrr package:

library(purrr)

df <- df%>% modify_if(is.factor, as.character) 

The straight up answer to your question is: No. The signature for the PostAsync method is as follows:

public Task PostAsync(Uri requestUri, HttpContent content)

So, while you can pass an object to PostAsync it must be of type HttpContent and your anonymous type does not meet that criteria.

However, there are ways to accomplish what you want to accomplish. First, you will need to serialize your anonymous type to JSON, the most common tool for this is Json.NET. And the code for this is pretty trivial:

var myContent = JsonConvert.SerializeObject(data);

Next, you will need to construct a content object to send this data, I will use a ByteArrayContent object, but you could use or create a different type if you wanted.

var buffer = System.Text.Encoding.UTF8.GetBytes(myContent);
var byteContent = new ByteArrayContent(buffer);

Next, you want to set the content type to let the API know this is JSON.

byteContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");

Then you can send your request very similar to your previous example with the form content:

var result = client.PostAsync("", byteContent).Result

On a side note, calling the .Result property like you're doing here can have some bad side effects such as dead locking, so you want to be careful with this.

JFilter http://code.google.com/p/jfilter/ is best suited for your requirement.

JFilter is a simple and high performance open source library to query collection of Java beans.

Key features

• Support of collection (java.util.Collection, java.util.Map and Array) properties.
• Support of collection inside collection of any depth.
• Support of inner queries.
• Support of parameterized queries.
• Can filter 1 million records in few 100 ms.
• Filter ( query) is given in simple json format, it is like Mangodb queries. Following are some examples.
• { "id":{"$le":"10"}
  • where object id property is less than equals to 10.
• { "id": {"$in":["0", "100"]}}
  • where object id property is 0 or 100.
• {"lineItems":{"lineAmount":"1"}}
  • where lineItems collection property of parameterized type has lineAmount equals to 1.
• { "$and":[{"id": "0"}, {"billingAddress":{"city":"DEL"}}]}
  • where id property is 0 and billingAddress.city property is DEL.
• {"lineItems":{"taxes":{ "key":{"code":"GST"}, "value":{"$gt": "1.01"}}}}
  • where lineItems collection property of parameterized type which has taxes map type property of parameteriszed type has code equals to GST value greater than 1.01.
• {'$or':[{'code':'10'},{'skus': {'$and':[{'price':{'$in':['20', '40']}}, {'code':'RedApple'}]}}]}
  • Select all products where product code is 10 or sku price in 20 and 40 and sku code is "RedApple".

Set is an interface and some of its implementation classes are HashSet, TreeSet and LinkedHashSet. It uses HashMap under the hood to store values. Because HashMap does not preserve the order, it is not possible to get value by index.

You now must be thinking how Set is using HashMap since HashMap stores a key, value pair but the Set does not. valid question. when you add an element in Set, internally, it maintains a HashMap where the key is the element you want to enter in Set and the value is the dummy constant. Below is an internal implementation of add function. Hence, all the keys in the HashMap will have the same constant value.

// Dummy value to associate with an Object in the backing Map
private static final Object PRESENT = new Object();

public boolean add(E e) {
    return map.put(e, PRESENT)==null;
}

Just extend Julian's table:

Ref: empty?blank?nil???????

jQuery has the contains method. Here's a snippet for you:

<script type="text/javascript">
$(function() {
    var foundin = $('*:contains("I am a simple string")');
});
</script>

The selector above selects any element that contains the target string. The foundin will be a jQuery object that contains any matched element. See the API information at: https://api.jquery.com/contains-selector/

One thing to note with the '*' wildcard is that you'll get all elements, including your html an body elements, which you probably don't want. That's why most of the examples at jQuery and other places use $('div:contains("I am a simple string")')

I had this problem for a while and triggerSave() didn't work, nor did any of the other methods.

So I found a way that worked for me ( I'm adding this here because other people may have already tried triggerSave and etc... ):

tinyMCE.init({
   selector: '.tinymce', // This is my <textarea> class
   setup : function(ed) {
                  ed.on('change', function(e) {
                     // This will print out all your content in the tinyMce box
                     console.log('the content '+ed.getContent());
                     // Your text from the tinyMce box will now be passed to your  text area ... 
                     $(".tinymce").text(ed.getContent()); 
                  });
            }
   ... Your other tinyMce settings ...
});

When you're submitting your form or whatever all you have to do is grab the data from your selector ( In my case: .tinymce ) using $('.tinymce').text().

it is not working in the Powershell and should use CMD in my case

I had (have) a similar problem in a Java application. I wrote a JDBC driver wrapper around the Oracle driver so all output is sent to a log file.

Its is called immediatly invoking function expression (IIFE). Mainly associated with the JavaScript closure concept. Main use is to run the function before the global variable changed, so that the expected behaviour of code can be retained.

It is an abbreviation for 'optional' , used for optional software in some distros.

Referencing my comments on other answers. This is how I would work out the difference in days based on 24 hours and calender days. the days attribute works well for 24 hours and the function works best for calendar checks.

from datetime import timedelta, datetime

def cal_days_diff(a,b):

    A = a.replace(hour = 0, minute = 0, second = 0, microsecond = 0)
    B = b.replace(hour = 0, minute = 0, second = 0, microsecond = 0)
    return (A - B).days

if __name__ == '__main__':

    x = datetime(2013, 06, 18, 16, 00)
    y = datetime(2013, 06, 19, 2, 00)

    print (y - x).days          # 0
    print cal_days_diff(y, x)   # 1 

    z = datetime(2013, 06, 20, 2, 00)

    print (z - x).days          # 1
    print cal_days_diff(z, x)   # 2 

If you write your code in emacs then you might be interested in the htmlize elisp package.

I think below way is the simplest way to achieving same :

    $user = User::where('email', '=', $request->input('email'))->first();
    if ($user) {
       // user doesn't exist!
    }

Incredibly old question, but bearing in mind that the OP said he does not want to use Do While and that none of the other solutions really work... Here's something that does exactly the same as a Exit Loop:

This never runs anything if the status is already at "Fail"...

While (i < 20 And Not bShouldStop)
    If (Status = "Fail") Then
        bShouldStop = True
    Else
        i = i + 1
        '
        ' Do Something
        '
    End If  
Wend

Whereas this one always processes something first (and increment the loop variable) before deciding whether it should loop once more or not.

While (i < 20 And Not bShouldStop)
    i = i + 1
    '
    ' Do Something
    '

    If (Status = "Fail") Then
        bShouldStop = True
    End If  
Wend

Ultimately, if the variable Status is being modified inside the While (and assuming you don't need i outside the while, it makes no difference really, but just wanted to present multiple options...

What's wrong with this?

foo.replace(" ", "")[:-3].upper()

You could modify .adm and add

.adm{
 clear:both;
}

That should make it move to a new line

Using just redirectAttributes.addFlashAttribute(...) -> "redirect:..." worked as well, didn't have to "reinsert" the model attribute.

Thanks, aborskiy!

There is no need for any External libraries, the JRE System libraries provide all you need.

I am infering that you have a org.w3c.dom.Document object you would like to write to a file

To do that, you use a javax.xml.transform.Transformer:

import org.w3c.dom.Document
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.dom.DOMSource; 
import javax.xml.transform.stream.StreamResult; 

public class XMLWriter {
    public static void writeDocumentToFile(Document document, File file) {

        // Make a transformer factory to create the Transformer
        TransformerFactory tFactory = TransformerFactory.newInstance();

        // Make the Transformer
        Transformer transformer = tFactory.newTransformer();

        // Mark the document as a DOM (XML) source
        DOMSource source = new DOMSource(document);

        // Say where we want the XML to go
        StreamResult result = new StreamResult(file);

        // Write the XML to file
        transformer.transform(source, result);
    }
}

Source: http://docs.oracle.com/javaee/1.4/tutorial/doc/JAXPXSLT4.html

Thanks To Previous Answers. :)

This script named "r4k4copy.cmd":

@echo off
for %%p in (SOURCE_DIR DEST_DIR FILENAMES_TO_COPY) do set %%p=
cls
echo :: Copy Files Including Folder Tree
echo :: http://stackoverflow.com
rem     /questions/472692/how-to-copy
rem     -a-directory-structure-but-only
rem     -include-certain-files-using-windows
echo :: ReScripted by r4k4
echo.
if "%1"=="" goto :NoParam
if "%2"=="" goto :NoParam
if "%3"=="" goto :NoParam
setlocal enabledelayedexpansion
set SOURCE_DIR=%1
set DEST_DIR=%2
set FILENAMES_TO_COPY=%3
for /R "%SOURCE_DIR%" %%F IN (%FILENAMES_TO_COPY%) do (
if exist "%%F" (
set FILE_DIR=%%~dpF
set FILE_INTERMEDIATE_DIR=!FILE_DIR:%SOURCE_DIR%=!
xcopy /E /I /Y "%%F" "%DEST_DIR%!FILE_INTERMEDIATE_DIR!"
)
)
goto :eof
:NoParam
echo.
echo Syntax: %0 [Source_DIR] [Dest_DIR] [FileName]
echo Eg.   : %0 D:\Root E:\Root\Lev1\Lev2\Lev3 *.JPG
echo Means : Copy *.JPG from D:\Root to E:\Root\Lev1\Lev2\Lev3

It accepts variable of "Source", "Destination", and "FileName". It also can only copying specified type of files or selective filenames.

Any improvement are welcome. :)

Based on the example pointed by RedEye, here's a class that needs less code :
it assumes that columns are always sorted in the same way, so it handles the
ColumnClick event sink internally :

public class ListViewColumnSorterExt : IComparer {
    /// <summary>
    /// Specifies the column to be sorted
    /// </summary>
    private int ColumnToSort;
    /// <summary>
    /// Specifies the order in which to sort (i.e. 'Ascending').
    /// </summary>
    private SortOrder OrderOfSort;
    /// <summary>
    /// Case insensitive comparer object
    /// </summary>
    private CaseInsensitiveComparer ObjectCompare;

    private ListView listView;
    /// <summary>
    /// Class constructor.  Initializes various elements
    /// </summary>
    public ListViewColumnSorterExt(ListView lv) {
        listView = lv;
        listView.ListViewItemSorter = this;
        listView.ColumnClick += new ColumnClickEventHandler(listView_ColumnClick);

        // Initialize the column to '0'
        ColumnToSort = 0;

        // Initialize the sort order to 'none'
        OrderOfSort = SortOrder.None;

        // Initialize the CaseInsensitiveComparer object
        ObjectCompare = new CaseInsensitiveComparer();
    }

    private void listView_ColumnClick(object sender, ColumnClickEventArgs e) {
        ReverseSortOrderAndSort(e.Column, (ListView)sender);
    }

    /// <summary>
    /// This method is inherited from the IComparer interface.  It compares the two objects passed using a case insensitive comparison.
    /// </summary>
    /// <param name="x">First object to be compared</param>
    /// <param name="y">Second object to be compared</param>
    /// <returns>The result of the comparison. "0" if equal, negative if 'x' is less than 'y' and positive if 'x' is greater than 'y'</returns>
    public int Compare(object x, object y) {
        int compareResult;
        ListViewItem listviewX, listviewY;

        // Cast the objects to be compared to ListViewItem objects
        listviewX = (ListViewItem)x;
        listviewY = (ListViewItem)y;

        // Compare the two items
        compareResult = ObjectCompare.Compare(listviewX.SubItems[ColumnToSort].Text, listviewY.SubItems[ColumnToSort].Text);

        // Calculate correct return value based on object comparison
        if (OrderOfSort == SortOrder.Ascending) {
            // Ascending sort is selected, return normal result of compare operation
            return compareResult;
        }
        else if (OrderOfSort == SortOrder.Descending) {
            // Descending sort is selected, return negative result of compare operation
            return (-compareResult);
        }
        else {
            // Return '0' to indicate they are equal
            return 0;
        }
    }

    /// <summary>
    /// Gets or sets the number of the column to which to apply the sorting operation (Defaults to '0').
    /// </summary>
    private int SortColumn {
        set {
            ColumnToSort = value;
        }
        get {
            return ColumnToSort;
        }
    }

    /// <summary>
    /// Gets or sets the order of sorting to apply (for example, 'Ascending' or 'Descending').
    /// </summary>
    private SortOrder Order {
        set {
            OrderOfSort = value;
        }
        get {
            return OrderOfSort;
        }
    }

    private void ReverseSortOrderAndSort(int column, ListView lv) {
        // Determine if clicked column is already the column that is being sorted.
        if (column == this.SortColumn) {
            // Reverse the current sort direction for this column.
            if (this.Order == SortOrder.Ascending) {
                this.Order = SortOrder.Descending;
            }
            else {
                this.Order = SortOrder.Ascending;
            }
        }
        else {
            // Set the column number that is to be sorted; default to ascending.
            this.SortColumn = column;
            this.Order = SortOrder.Ascending;
        }

        // Perform the sort with these new sort options.
        lv.Sort();
    }
}  

Assuming you're happy with the sort options, the class properties are private.

The only code you need to write is :

in Form declarations

private ListViewColumnSorterExt listViewColumnSorter;  

in Form constructor

listViewColumnSorter = new ListViewColumnSorterExt(ListView1);  

... and you're done.

And what about a single sorter that handles multiple ListViews ?

public class MultipleListViewColumnSorter {
    private List<ListViewColumnSorterExt> sorters;

    public MultipleListViewColumnSorter() {
        sorters = new List<ListViewColumnSorterExt>();
    }

    public void AddListView(ListView lv) {
        sorters.Add(new ListViewColumnSorterExt(lv));
    }
}  

in Form declarations

private MultipleListViewColumnSorter listViewSorter = new MultipleListViewColumnSorter();  

in Form constructor

listViewSorter.AddListView(ListView1);  
listViewSorter.AddListView(ListView2);  
// ... and so on ...  

You installed the Java Runtime Environment (JRE) only, which does not contain javac. For javac, you have to install the OpenJDK Development Environment. You can install java-devel or java-1.6.0-openjdk-devel, which both include javac.

By the way: you can find out which package provides javac with a yum search, e.g.

su -c 'yum provides javac'

on more recent releases of CentOS e.g. 6 the command changes to

su -c 'yum provides */javac'

Another note: using yum and openjdk is only one possibility to install the JDK. Many people prefer Sun/Oracle's "original" SDK. See How to install Java SDK on CentOS? and links for alternatives.

While not strictly serialization, json may be reasonable approach here. That will handled nested dicts and lists, and data as long as your data is "simple": strings, and basic numeric types.

Short answer: it's closely related to the Content-Security-Policy: upgrade-insecure-requests response header, indicating that the browser supports it (and in fact prefers it).

It took me 30mins of Googling, but I finally found it buried in the W3 spec.

The confusion comes because the header in the spec was HTTPS: 1, and this is how Chromium implemented it, but after this broke lots of websites that were poorly coded (particularly WordPress and WooCommerce) the Chromium team apologized:

"I apologize for the breakage; I apparently underestimated the impact based on the feedback during dev and beta."
— Mike West, in Chrome Issue 501842

Their fix was to rename it to Upgrade-Insecure-Requests: 1, and the spec has since been updated to match.

Anyway, here is the explanation from the W3 spec (as it appeared at the time)...

The HTTPS HTTP request header field sends a signal to the server expressing the client’s preference for an encrypted and authenticated response, and that it can successfully handle the upgrade-insecure-requests directive in order to make that preference as seamless as possible to provide.

...

When a server encounters this preference in an HTTP request’s headers, it SHOULD redirect the user to a potentially secure representation of the resource being requested.

When a server encounters this preference in an HTTPS request’s headers, it SHOULD include a Strict-Transport-Security header in the response if the request’s host is HSTS-safe or conditionally HSTS-safe [RFC6797].

In my case I needed to remove a query param of the url to prevent user to see it.

I found replaceState safer than location.go because the path with the old query params disappeared of the stack and user can be redo the query related with this query. So, I prefer it to do it:

this.location.replaceState(this.router.url.split('?')[0]);

Whit location.go, go to back with the browser will return to your old path with the query params and will keep it in the navigation stack.

this.location.go(this.router.url.split('?')[0]);

In my case the SDKROOT environment variable was wrong, which referred to an old version of iPhoneOSxx.x.sdk. (Perhaps this would have automatically resolved itself after a reboot?)

You can check by running echo $SDKROOT and verifying that it's a valid path.

I fixed it by updating in .bash_profile:

export SDKROOT=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS11.2.sdk

If you don't want to use a module you have to install like requests, and your use case is very basic, then you can use urllib2

urllib2.urlopen(url, body)

See the documentation for urllib2 here: https://docs.python.org/2/library/urllib2.html.

You need to use getDate() to get the date part. The getDay() function returns the day number (Sunday = 0, Monday = 1...), and the getMonth() returns a 0 based index, so you need to increment it by 1.

 var currentdate = new Date(); 

 var datetime = "Last Sync: " + currentdate.getDate() + "/"+  (parseInt(currentdate.getMonth())    + 1)
   + "/" + currentdate.getFullYear() + " @ "  
   + currentdate.getHours() + ":"  
   + currentdate.getMinutes() + ":" + currentdate.getSeconds(); 

You cannot use <li href="#" since it belongs to <a href="#" that's why it wasn't working, change it and it's all good.

Here is working JSFiddle which shows you how to create bootstrap popover.

Relevant parts of the code is below:

HTML:

<!-- 
Note: Popover content is read from "data-content" and "title" tags.
-->
<a tabindex="0"
   class="btn btn-lg btn-primary" 
   role="button" 
   data-html="true" 
   data-toggle="popover" 
   data-trigger="focus" 
   title="<b>Example popover</b> - title" 
   data-content="<div><b>Example popover</b> - content</div>">Example popover</a>

JavaScript:

$(function(){
    // Enables popover
    $("[data-toggle=popover]").popover();
});

And by the way, you always need at least $("[data-toggle=popover]").popover(); to enable the popover. But in place of data-toggle="popover" you can also use id="my-popover" or class="my-popover". Just remember to enable them using e.g: $("#my-popover").popover(); in those cases.

Here is the link to the complete spec: Bootstrap Popover

Bonus:

If for some reason you don't like or cannot read content of a popup from the data-content and title tags. You can also use e.g. hidden divs and a bit more JavaScript. Here is an example about that.