What happens if somebody passes a unicode string to your function? Or a class derived from dict? Or a class implementing a dict-like interface? Following code covers first two cases. If you are using Python 2.6 you might want to use collections.Mapping instead of dict as per the ABC PEP.

def value_list(x):
    if isinstance(x, dict):
        return list(set(x.values()))
    elif isinstance(x, basestring):
        return [x]
    else:
        return None

Two options for runtime type checking with generics:

Option 1 - Corrupt your constructor

Let's assume you are overriding indexOf(...), and you want to check the type just for performance, to save yourself iterating the entire collection.

Make a filthy constructor like this:

public MyCollection<T>(Class<T> t) {

    this.t = t;
}

Then you can use isAssignableFrom to check the type.

public int indexOf(Object o) {

    if (
        o != null &&

        !t.isAssignableFrom(o.getClass())

    ) return -1;

//...

Each time you instantiate your object you would have to repeat yourself:

new MyCollection<Apples>(Apples.class);

You might decide it isn't worth it. In the implementation of ArrayList.indexOf(...), they do not check that the type matches.

Option 2 - Let it fail

If you need to use an abstract method that requires your unknown type, then all you really want is for the compiler to stop crying about instanceof. If you have a method like this:

protected abstract void abstractMethod(T element);

You can use it like this:

public int indexOf(Object o) {

    try {

        abstractMethod((T) o);

    } catch (ClassCastException e) {

//...

You are casting the object to T (your generic type), just to fool the compiler. Your cast does nothing at runtime, but you will still get a ClassCastException when you try to pass the wrong type of object into your abstract method.

NOTE 1: If you are doing additional unchecked casts in your abstract method, your ClassCastExceptions will get caught here. That could be good or bad, so think it through.

NOTE 2: You get a free null check when you use instanceof. Since you can't use it, you may need to check for null with your bare hands.

Simplest way I can think of:

# checking whether foo is a boolean
!!foo == foo

myObject as? String returns nil if myObject is not a String. Otherwise, it returns a String?, so you can access the string itself with myObject!, or cast it with myObject! as String safely.

Depends on the use case. But let's assume you want to do something useful with your "variable" types. The Swift switch statement is very powerful and can help you get the results you're looking for...

    let dd2 = ["x" : 9, "y" : "home9"]
    let dds = dd2.filter {
        let eIndex = "x"
        let eValue:Any = 9
        var r = false

        switch eValue {
        case let testString as String:
            r = $1 == testString
        case let testUInt as UInt:
            r = $1 == testUInt
        case let testInt as Int:
            r = $1 == testInt
        default:
            r = false
        }

        return r && $0 == eIndex
    }

In this case, have a simple dictionary that contains key/value pairs that can be UInt, Int or String. In the .filter() method on the dictionary, I need to make sure I test for the values correctly and only test for a String when it's a string, etc. The switch statement makes this simple and safe! By assigning 9 to the variable of type Any, it makes the switch for Int execute. Try changing it to:

   let eValue:Any = "home9"

..and try it again. This time it executes the as String case.

foo.instance_of? String

or

foo.kind_of? String 

if you you only care if it is derrived from String somewhere up its inheritance chain

TypeScript have a way of validating the type of a variable in runtime. You can add a validating function that returns a type predicate. So you can call this function inside an if statement, and be sure that all the code inside that block is safe to use as the type you think it is.

Example from the TypeScript docs:

function isFish(pet: Fish | Bird): pet is Fish {
   return (<Fish>pet).swim !== undefined;
}

// Both calls to 'swim' and 'fly' are now okay.
if (isFish(pet)) {
  pet.swim();
}
else {
  pet.fly();
}

See more at: https://www.typescriptlang.org/docs/handbook/advanced-types.html

As soon as the page load the function will be ran:

(*your function goes here*)(); 

Alternatively:

document.onload = functionName();
window.onload = functionName(); 

An excellent explanation can be found here: Generate script in SQL Server Management Studio

Courtesy Ali Issa Here's what you have to do:

1. Right click the database (not the table) and select tasks --> generate scripts
2. Next --> select the requested table/tables (from select specific database objects)
3. Next --> click advanced --> types of data to script = schema and data

If you want to create a script that just generates the tables (no data) you can skip the advanced part of the instructions!

Another tool you can use is registry-cli. For example, this command:

registry.py -l "login:password" -r https://your-registry.example.com --delete

will delete all but the last 10 images.

You can use System.Web.Script.Serialization.JavaScriptSerializer:

Dictionary<string, object> dictss = new Dictionary<string, object>(){
   {"User", "Mr.Joshua"},
   {"Pass", "4324"},
};

string jsonString = (new JavaScriptSerializer()).Serialize((object)dictss);

Another pre-5.14 solution: http://www.perlmonks.org/?node_id=346719 (see japhy's post)

As his approach uses map, it also works well for arrays, but requires cascading map to produce a temporary array (otherwise the original would be modified):

my @orig = ('this', 'this sucks', 'what is this?');
my @list = map { s/this/that/; $_ } map { $_ } @orig;
# @orig unmodified

I haven't tested the email part of this (my test box does not send email) but I think it will work.

<?php
if ($_POST) {
$s = md5(rand());
mail('[email protected]', 'attachment', "--$s

{$_POST['m']}
--$s
Content-Type: application/octet-stream; name=\"f\"
Content-Transfer-Encoding: base64
Content-Disposition: attachment

".chunk_split(base64_encode(join(file($_FILES['f']['tmp_name']))))."
--$s--", "MIME-Version: 1.0\r\nContent-Type: multipart/mixed; boundary=\"$s\"");
exit;
}
?>
<form method="post" enctype="multipart/form-data" action="<?php echo $_SERVER['PHP_SELF'] ?>">
<textarea name="m"></textarea><br>
<input type="file" name="f"/><br>
<input type="submit">
</form>

A note to this:

IE 8.0s emulation only promises to display the page the same. There are subtle differences that might cause functionality to break. I recently had a problem with just that. Where IE 7.0 uses a javascript wrapper-function called "anonymous()" in IE 8.0 the wrapper was named differently.

So do not expect things like JavaScript to "just work", because you turn on emulation.

Alternatively, in python 3.6+, you can generate Unicode superscript and copy paste that in your code:

ax1.set_ylabel('Rate (min?¹)')

Try this. Oracle has this feature to distinguish the millennium years..

As you mentioned, if your column is a varchar, then the below query will yield you 1989..

select to_date(column_name,'dd/mm/rr') from table1;

When the format rr is used in year, the following would be done by oracle.

if rr->00 to 49 ---> result will be 2000 - 2049, if rr->50 to 99 ---> result will be 1950 - 1999

Here is a link to an Online automator to convert CSV files to SQL Insert Into statements:

CSV-to-SQL

You can use getRawValue()

this.formGroup.getRawValue().attribute

"div" tag can not be used above "tr" tag. Instead you can use "tbody" tag to do your work. If you are planning to give id attribute to div tag and doing some processing, same purpose you can achieve through "tbody" tag. Div and Table are both block level elements. so they can not be nested. For further information visit this page

For example:

<table>
    <tbody class="green">
        <tr>
            <td>Data</td>
        </tr>
    </tbody>
    <tbody class="blue">
        <tr>
            <td>Data</td>
        </tr>
    </tbody>
</table>

secondly, you can put "div" tag inside "td" tag.

<table>
    <tr>
        <td>
            <div></div>
        </td>
    </tr>
</table>

Further questions are always welcome.

simplify @Vikas version

@Override
public boolean onPrepareOptionsMenu (Menu menu) {

    menu.findItem(R.id.example_foobar).setEnabled(isFinalized);
    return true;
}

It is apparently possible to manually install offline voice recognition by downloading the files directly and installing them in the right locations manually. I guess this is just a way to bypass Google hardware requirements. However, personally I didn't have to reboot or anything, simply changing to UK and back again did it.

The problem with storing only filepaths to images in a database is that the database's integrity can no longer be forced.

If the actual image pointed to by the filepath becomes unavailable, the database unwittingly has an integrity error.

Given that the images are the actual data being sought after, and that they can be managed easier (the images won't suddenly disappear) in one integrated database rather than having to interface with some kind of filesystem (if the filesystem is independently accessed, the images MIGHT suddenly "disappear"), I'd go for storing them directly as a BLOB or such.

In Addition

When migration you deployed long ago does not let you migrate new one.

What happened is, I work in a larger Rails app with more than a thousand of migration files. And, it takes a month for us to ship a medium-sized feature. I was working on a feature and I had deployed a migration a month ago then in the review process the structure of migration and filename changed, now I try to deploy my new code, the build failed saying

ActiveRecord::StatementInvalid: PG::DuplicateColumn: ERROR:  column "my_new_field" of relation "accounts" already exists

none of the above-mentioned solutions worked for me because the old migration file was missing and the field I intended to create in my new migration file already existed in the DB. The only solution that worked for me is:

1. I scped the file to the server
2. I opened the rails console
3. I required the file in the IRB session
4. then AddNewMyNewFieldToAccounts.new.down

then I could run the deploy build again.

Hope it helps you too.

There's only one registered mediatype for SVG, and that's the one you listed, image/svg+xml. You can of course serve SVG as XML too, though browsers tend to behave differently in some scenarios if you do, for example I've seen cases where SVG used in CSS backgrounds fail to display unless served with the image/svg+xml mediatype.

This works fine for me:

while True:
   answer = input('Do you want to continue?:')
   if answer.lower().startswith("y"):
      print("ok, carry on then")
   elif answer.lower().startswith("n"):
      print("sayonara, Robocop")
      exit()

edit: use input in python 3.2 instead of raw_input

One correct way to get selected value would be

var selected_value = $('#fruit_name').val()

And then you should do

if(selected_value) { ... }

Associative arrays in Java like in PHP :

SlotMap hmap = new SlotHashMap();
String key = "k01";
String value = "123456";
// Add key value
hmap.put( key, value );

// check if key exists key value
if ( hmap.containsKey(key)) {
    //.....        
}

// loop over hmap
Set mapkeys =  hmap.keySet();
for ( Iterator iterator = mapkeys.iterator(); iterator.hasNext();) {
  String key = (String) iterator.next();
  String value = hmap.get(key);
}

More info, see Class SoftHashMap : https://shiro.apache.org/static/1.2.2/apidocs/org/apache/shiro/util/SoftHashMap.html

This thread was very helpful while I was investigating the subject.

I've modified some of the code available here into a jQuery plugin so it is in a re-usable form, primarily to satisfy my needs but others may appreciate a simpler interface to jumpstart using contenteditable tags.

https://gist.github.com/3410122

Update:

Due to its increasing popularity the plugin has been adopted by Makesites.org

Development will continue from here:

https://github.com/makesites/jquery-contenteditable

Not sure why is this complicated. I would do this basic javascript

<body onresize='document.getElementsByTagName("body")[0].style[ "font-size" ] = document.body.clientWidth*(12/1280) + "px";'>

Where 12 means 12px at 1280 resolution. You decide the value you want here

Try it:

def showDf(df, count=None, percent=None, maxColumns=0):
    if (df == None): return
    import pandas
    from IPython.display import display
    pandas.set_option('display.encoding', 'UTF-8')
    # Pandas dataframe
    dfp = None
    # maxColumns param
    if (maxColumns >= 0):
        if (maxColumns == 0): maxColumns = len(df.columns)
        pandas.set_option('display.max_columns', maxColumns)
    # count param
    if (count == None and percent == None): count = 10 # Default count
    if (count != None):
        count = int(count)
        if (count == 0): count = df.count()
        pandas.set_option('display.max_rows', count)
        dfp = pandas.DataFrame(df.head(count), columns=df.columns)
        display(dfp)
    # percent param
    elif (percent != None):
        percent = float(percent)
        if (percent >=0.0 and percent <= 1.0):
            import datetime
            now = datetime.datetime.now()
            seed = long(now.strftime("%H%M%S"))
            dfs = df.sample(False, percent, seed)
            count = df.count()
            pandas.set_option('display.max_rows', count)
            dfp = dfs.toPandas()    
            display(dfp)

Examples of usages are:

# Shows the ten first rows of the Spark dataframe
showDf(df)
showDf(df, 10)
showDf(df, count=10)

# Shows a random sample which represents 15% of the Spark dataframe
showDf(df, percent=0.15) 

This has been asked so many times so that a user with over 1000 points ask for this is some strange
But just to show just another way to do it:

echo "/some/random/file.csv:some string" | awk '{sub(/:.*/,x)}1'
/some/random/file.csv

Here's a complete read, update and write example.

Input file, test.ini

[section_a]
string_val = hello
bool_val = false
int_val = 11
pi_val = 3.14

Working code.

try:
    from configparser import ConfigParser
except ImportError:
    from ConfigParser import ConfigParser  # ver. < 3.0

# instantiate
config = ConfigParser()

# parse existing file
config.read('test.ini')

# read values from a section
string_val = config.get('section_a', 'string_val')
bool_val = config.getboolean('section_a', 'bool_val')
int_val = config.getint('section_a', 'int_val')
float_val = config.getfloat('section_a', 'pi_val')

# update existing value
config.set('section_a', 'string_val', 'world')

# add a new section and some values
config.add_section('section_b')
config.set('section_b', 'meal_val', 'spam')
config.set('section_b', 'not_found_val', '404')

# save to a file
with open('test_update.ini', 'w') as configfile:
    config.write(configfile)

Output file, test_update.ini

[section_a]
string_val = world
bool_val = false
int_val = 11
pi_val = 3.14

[section_b]
meal_val = spam
not_found_val = 404

The original input file remains untouched.

Use the DotNetZip library at http://www.codeplex.com/DotNetZip

class library and toolset for manipulating zip files. Use VB, C# or any .NET language to easily create, extract, or update zip files...

DotNetZip works on PCs with the full .NET Framework, and also runs on mobile devices that use the .NET Compact Framework. Create and read zip files in VB, C#, or any .NET language, or any scripting environment...

If all you want is a better DeflateStream or GZipStream class to replace the one that is built-into the .NET BCL, DotNetZip has that, too. DotNetZip's DeflateStream and GZipStream are available in a standalone assembly, based on a .NET port of Zlib. These streams support compression levels and deliver much better performance than the built-in classes. There is also a ZlibStream to complete the set (RFC 1950, 1951, 1952)...

Actually torek told you already how to use the tools much better than I would be able to do. However, in this case I think it is important to point out something peculiar if you follow the guidelines at http://octopress.org/docs/deploying/github/. Namely, you will have multiple github repositories in your setup. First of all the one with all the source code for your website in say the directory $WEBSITE, and then the one with only the static generated files residing in $WEBSITE/_deploy. The funny thing of the setup is that there is a .gitignore file in the $WEBSITE directory so that this setup actually works.

Enough introduction. In this case the error might also come from the repository in _deploy.

cd _deploy

git branch -a
* master
remotes/origin/master
remotes/origin/source

In .git/config you will normally need to find something like this:

[core]
    repositoryformatversion = 0
    filemode = true
    bare = false
    logallrefupdates = true
[remote "origin"]
    url = [email protected]:yourname/yourname.github.io.git
    fetch = +refs/heads/*:refs/remotes/origin/*
[branch "master"]
    remote = origin
    merge = refs/heads/master

But in your case the branch master does not have a remote.

[core]
    repositoryformatversion = 0
    filemode = true
    bare = false
    logallrefupdates = true
[remote "origin"]
    url = [email protected]:yourname/yourname.github.io.git
    fetch = +refs/heads/*:refs/remotes/origin/*

Which you can solve by:

cd _deploy
git branch --set-upstream-to=origin/master

So, everything is as torek told you, but it might be important to point out that this very well might concern the _deploy directory rather than the root of your website.

PS: It might be worth to use a shell such as zsh with a git plugin to not be bitten by this thing in the future. It will immediately show that _deploy concerns a different repository.

My suggestion would be to finish the activity that you don't want the users to go back to. For instance, in your sign in activity, right after you call startActivity, call finish(). When the users hit the back button, they will not be able to go to the sign in activity because it has been killed off the stack.

In your python shell/ipython do:

from django.conf import settings

settings.configure()

You can't convert binary data to String. As a solution you can encode binary data and then convert to String. For example, look at this How do you convert binary data to Strings and back in Java?

A quick update: since Typescript 2.1 there is a built in type Record<T, K> that acts like a dictionary.

In this case you could declare stuff like so:

var stuff: Record<string, any> = {};

You could also limit/specify potential keys by unioning literal types:

var stuff: Record<'a'|'b'|'c', string|boolean> = {};

Here's a more generic example using the record type from the docs:

// For every properties K of type T, transform it to U
function mapObject<K extends string, T, U>(obj: Record<K, T>, f: (x: T) => U): Record<K, U>

const names = { foo: "hello", bar: "world", baz: "bye" };
const lengths = mapObject(names, s => s.length);  // { foo: number, bar: number, baz: number }

TypeScript 2.1 Documentation on Record<T, K>

The only disadvantage I see to using this over {[key: T]: K} is that you can encode useful info on what sort of key you are using in place of "key" e.g. if your object only had prime keys you could hint at that like so: {[prime: number]: yourType}.

Here's a regex I wrote to help with these conversions. This will only convert cases where the label is "key". To convert other labels simply change the first capturing group:

Find: \{\s*\[(key)\s*(+\s*:\s*(\w+)\s*\]\s*:\s*([^\}]+?)\s*;?\s*\}

Replace: Record<$2, $3>

Modern way:

newParent.append(...oldParent.childNodes);

1. .append is the replacement for .appendChild. The main difference is that it accepts multiple nodes at once and even plain strings, like .append('hello!')
2. oldParent.childNodes is iterable so it can be spread with ... to become multiple parameters of .append()

Compatibility tables of both (in short: Edge 17+, Safari 10+):

• https://developer.mozilla.org/en-US/docs/Web/API/ParentNode/append#Browser_compatibility
• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax#Browser_compatibility

If you are using Flask-Restful like me, it is also possible this way:

api.add_resource(UserAPI, '/<userId>', '/<userId>/<username>', endpoint = 'user')

a then in your Resource class:

class UserAPI(Resource):

  def get(self, userId, username=None):
    pass

Prepending a BOM (\uFEFF) worked for me (Excel 2007), in that Excel recognised the file as UTF-8. Otherwise, saving it and using the import wizard works, but is less ideal.

char **orderIds;

orderIds = malloc(variableNumberOfElements * sizeof(char*));

for(int i = 0; i < variableNumberOfElements; i++) {
  orderIds[i] = malloc((ID_LEN + 1) * sizeof(char));
  strcpy(orderIds[i], your_string[i]);
}

Combining all conditions

select  a.* from tbl_Company a

where  a.Company_ID NOT IN (1,2)  

AND (   
        (0 = 
            CASE WHEN (@Fromdate = '' or @Todate='')
                THEN 0 
                ELSE 1  
            END
        )      -- if 0=0 true , if 0=1 fails (filter only when the fromdate and todate is present)
                OR
        (a.Created_Date between @Fromdate and @Todate )                 
    )

data = [4, 5, 6] # Your global variable

def print_data(data): # <-- Pass in a parameter called "data"
    print data  # <-- Note: You can access global variable inside your function, BUT for now, which is which? the parameter or the global variable? Confused, huh?

print_data(data)

To add that using Jquery:

$('#commentForm').submit(function(){ //listen for submit event
    $.each(params, function(i,param){
        $('<input />').attr('type', 'hidden')
            .attr('name', param.name)
            .attr('value', param.value)
            .appendTo('#commentForm');
    });

    return true;
}); 

As has been said, using unset is different with arrays as well

$ foo=(4 5 6)

$ foo[2]=

$ echo ${#foo[*]}
3

$ unset foo[2]

$ echo ${#foo[*]}
2

Looks like you're using SQL Server, in which case GETDATE() or current_timestamp may help you. But you will have to ensure that the format of the date with which you are comparing the system dates matches (timezone, granularity etc.)

e.g.

where convert(varchar(10), submission_date, 102) 
    = convert(varchar(10), getdate(), 102)

HTML code

<div ng-app>
<div ng-controller='ctrl'>
    <div ng-class='whatClassIsIt(call.state[0])'>{{call.state[0]}}</div>
    <div ng-class='whatClassIsIt(call.state[1])'>{{call.state[1]}}</div>
    <div ng-class='whatClassIsIt(call.state[2])'>{{call.state[2]}}</div>
    <div ng-class='whatClassIsIt(call.state[3])'>{{call.state[3]}}</div>
    <div ng-class='whatClassIsIt(call.state[4])'>{{call.state[4]}}</div>
    <div ng-class='whatClassIsIt(call.state[5])'>{{call.state[5]}}</div>
    <div ng-class='whatClassIsIt(call.state[6])'>{{call.state[6]}}</div>
    <div ng-class='whatClassIsIt(call.state[7])'>{{call.state[7]}}</div>
</div>

JavaScript Code

function ctrl($scope){
$scope.call={state:['second','first','nothing','Never', 'Gonna', 'Give', 'You', 'Up']}


$scope.whatClassIsIt= function(someValue){
     if(someValue=="first")
            return "ClassA"
     else if(someValue=="second")
         return "ClassB";
    else
         return "ClassC";
}
}

Although the accepted answer is correct, it does not state why the original code failed to work.

Bad code from your question:

HttpCookie userid = new HttpCookie("userid", objUser.id.ToString());
userid.Expires.AddYears(1);
Response.Cookies.Add(userid);

Take a look at the second line. The basis for expiration is on the Expires property which contains the default of 1/1/0001. The above code is evaluating to 1/1/0002. Furthermore the evaluation is not being saved back to the property. Instead the Expires property should be set with the basis on the current date.

Corrected code:

HttpCookie userid = new HttpCookie("userid", objUser.id.ToString());
userid.Expires = DateTime.Now.AddYears(1);
Response.Cookies.Add(userid);

Your problem is that the top and left properties require a unit of measure, not just a bare number:

div.style.top = "200px";
div.style.left = "200px";

You can't do it in a single query inside the package - you can't mix the SQL and PL/SQL types, and would need to define the types in the SQL layer as Tony, Marcin and Thio have said.

If you really want this done locally, and you can index the table type by VARCHAR instead of BINARY_INTEGER, you can do something like this:

-- dummy ITEM table as we don't know what the real ones looks like
create table item(
    item_num number,
    currency varchar2(9)
)
/   

insert into item values(1,'GBP');
insert into item values(2,'AUD');
insert into item values(3,'GBP');
insert into item values(4,'AUD');
insert into item values(5,'CDN');

create package so_5165580 as
    type exch_row is record(
        exch_rt_eur number,
        exch_rt_usd number);
    type exch_tbl is table of exch_row index by varchar2(9);
    exch_rt exch_tbl;
    procedure show_items;
end so_5165580;
/

create package body so_5165580 as
    procedure populate_rates is
        rate exch_row;
    begin
        rate.exch_rt_eur := 0.614394;
        rate.exch_rt_usd := 0.8494;
        exch_rt('GBP') := rate;
        rate.exch_rt_eur := 0.9817;
        rate.exch_rt_usd := 1.3572;
        exch_rt('AUD') := rate;
    end;

    procedure show_items is
        cursor c0 is
            select i.*
            from item i;
    begin
        for r0 in c0 loop
            if exch_rt.exists(r0.currency) then
                dbms_output.put_line('Item ' || r0.item_num
                    || ' Currency ' || r0.currency
                    || ' EUR ' || exch_rt(r0.currency).exch_rt_eur
                    || ' USD ' || exch_rt(r0.currency).exch_rt_usd);
            else
                dbms_output.put_line('Item ' || r0.item_num
                    || ' Currency ' || r0.currency
                    || ' ** no rates defined **');
            end if;
        end loop;
    end;
begin
    populate_rates;
end so_5165580;
/

So inside your loop, wherever you would have expected to use r0.exch_rt_eur you instead use exch_rt(r0.currency).exch_rt_eur, and the same for USD. Testing from an anonymous block:

begin
    so_5165580.show_items;
end;
/

Item 1 Currency GBP EUR .614394 USD .8494
Item 2 Currency AUD EUR .9817 USD 1.3572
Item 3 Currency GBP EUR .614394 USD .8494
Item 4 Currency AUD EUR .9817 USD 1.3572
Item 5 Currency CDN ** no rates defined **

Based on the answer Stef posted, this doesn't need to be in a package at all; the same results could be achieved with an insert statement. Assuming EXCH holds exchange rates of other currencies against the Euro, including USD with currency_key=1:

insert into detail_items
with rt as (select c.currency_cd as currency_cd,
        e.exch_rt as exch_rt_eur,
        (e.exch_rt / usd.exch_rt) as exch_rt_usd
    from exch e,
        currency c,
        (select exch_rt from exch where currency_key = 1) usd
    where c.currency_key = e.currency_key)
select i.doc,
    i.doc_currency,
    i.net_value,
    i.net_value / rt.exch_rt_usd AS net_value_in_usd,
    i.net_value / rt.exch_rt_eur as net_value_in_euro
from item i
join rt on i.doc_currency = rt.currency_cd;

With items valued at 19.99 GBP and 25.00 AUD, you get detail_items:

DOC DOC_CURRENCY NET_VALUE         NET_VALUE_IN_USD  NET_VALUE_IN_EURO
--- ------------ ----------------- ----------------- -----------------
1   GBP          19.99             32.53611          23.53426
2   AUD          25                25.46041          18.41621

If you want the currency stuff to be more re-usable you could create a view:

create view rt as
select c.currency_cd as currency_cd,
    e.exch_rt as exch_rt_eur,
    (e.exch_rt / usd.exch_rt) as exch_rt_usd
from exch e,
    currency c,
    (select exch_rt from exch where currency_key = 1) usd
where c.currency_key = e.currency_key;

And then insert using values from that:

insert into detail_items
select i.doc,
    i.doc_currency,
    i.net_value,
    i.net_value / rt.exch_rt_usd AS net_value_in_usd,
    i.net_value / rt.exch_rt_eur as net_value_in_euro
from item i
join rt on i.doc_currency = rt.currency_cd;

declare @sexo as char(1)

select @sexo='F'

select * from pessoa

where isnull(Sexo,0) =isnull(@Sexo,0)

I found myself wanting to do this and I reviewed the above answers and did a hybrid approach of them. It got a little tricky, but here is what I did:

My button already worked with a server side post. I wanted to let that to continue to work so I left the "OnClick" the same, but added a OnClientClick:

OnClientClick="if (!OnClick_Submit()) return false;"

Here is my full button element in case it matters:

<asp:Button UseSubmitBehavior="false" runat="server" Class="ms-ButtonHeightWidth jiveSiteSettingsSubmit" OnClientClick="if (!OnClick_Submit()) return false;" OnClick="BtnSave_Click" Text="<%$Resources:wss,multipages_okbutton_text%>" id="BtnOK" accesskey="<%$Resources:wss,okbutton_accesskey%>" Enabled="true"/>

If I inspect the onclick attribute of the HTML button at runtime it actually looks like this:

if (!OnClick_Submit()) return false;WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions("ctl00$PlaceHolderMain$ctl03$RptControls$BtnOK", "", true, "", "", false, true))

Then in my Javascript I added the OnClick_Submit method. In my case I needed to do a check to see if I needed to show a dialog to the user. If I show the dialog I return false causing the event to stop processing. If I don't show the dialog I return true causing the event to continue processing and my postback logic to run as it used to.

function OnClick_Submit() {
    var initiallyActive = initialState.socialized && initialState.activityEnabled;
    var socialized = IsSocialized();
    var enabled = ActivityStreamsEnabled();

    var displayDialog;

    // Omitted the setting of displayDialog for clarity

    if (displayDialog) {
        $("#myDialog").dialog('open');
        return false;
    }
    else {
        return true;
    }
}

Then in my Javascript code that runs when the dialog is accepted, I do the following depending on how the user interacted with the dialog:

$("#myDialog").dialog('close');
__doPostBack('message', '');

The "message" above is actually different based on what message I want to send.

But wait, there's more!

Back in my server-side code, I changed OnLoad from:

protected override void OnLoad(EventArgs e)
{
    base.OnLoad(e)
    if (IsPostBack)
    {
        return;
    }

    // OnLoad logic removed for clarity
}

To:

protected override void OnLoad(EventArgs e)
{
    base.OnLoad(e)
    if (IsPostBack)
    {
        switch (Request.Form["__EVENTTARGET"])
        {
            case "message1":
                // We did a __doPostBack with the "message1" command provided
                Page.Validate();
                BtnSave_Click(this, new CommandEventArgs("message1", null));
                break;

            case "message2":
                // We did a __doPostBack with the "message2" command provided
                Page.Validate();
                BtnSave_Click(this, new CommandEventArgs("message2", null));
                break;
            }
            return;
    }

    // OnLoad logic removed for clarity
}

Then in BtnSave_Click method I do the following:

CommandEventArgs commandEventArgs = e as CommandEventArgs;
string message = (commandEventArgs == null) ? null : commandEventArgs.CommandName;

And finally I can provide logic based on whether or not I have a message and based on the value of that message.

Similar to @sirthomas's answer, JSON.NET also respects the EmitDefaultValue property on DataMemberAttribute:

[DataMember(Name="property_name", EmitDefaultValue=false)]

This may be desirable if you are already using [DataContract] and [DataMember] in your model type and don't want to add JSON.NET-specific attributes.

I started working on this problem a long time ago, trying to write my own binary to decimal converter function. I don't actually know how to convert decimal to binary though! I just revisited it today and figured it out and this is what I came up with. I'm not sure if this is what you need, but here it is:

def __degree(number):
    power = 1

    while number % (10**power) != number:
        power += 1

    return power

def __getDigits(number):
    digits = []
    degree = __degree(number)

    for x in range(0, degree):
        digits.append(int(((number % (10**(degree-x))) - (number % (10**(degree-x-1)))) / (10**(degree-x-1))))
    return digits

def binaryToDecimal(number):
    list = __getDigits(number)
    decimalValue = 0
    for x in range(0, len(list)):
        if (list[x] is 1):
            decimalValue += 2**(len(list) - x - 1)
    return decimalValue

Again, I'm still learning Python just on my own, hopefully this helps. The first function determines how many digits there are, the second function actually figures out they are and returns them in a list, and the third function is the only one you actually need to call, and it calculates the decimal value. If your teacher actually wanted you to write your own converter, this works, I haven't tested it with every number, but it seems to work perfectly! I'm sure you'll all find the bugs for me! So anyway, I just called it like:

binaryNum = int(input("Enter a binary number: "))

print(binaryToDecimal(binaryNum))

This prints out the correct result. Cheers!

if (list.Count > desiredIndex && list[desiredIndex] != null)
{
    // logic
}

You can generate getter and setter by following steps:

• Declare variables first.
• click on ALT+Insert on keyboard placing cursor down to variable declaration part
• now select constructor and press Ctrl+A on keyboard and click on Enter to create constructor.
• Now again placing cursor at next line of constructor closing brace , click ALT+INSERT and select getter and setter and again press CTRL+A to select all variables and hit Enter.

That's it. Happy coding!!

Normally this caused because you didn't start mongod process before you try starting mongo shell.

Start mongod server

mongod

Open another terminal window

Start mongo shell

mongo

Using @Marc Gravell 's answer, I found a way to use the following method:

source.TakeWhile(x => x != value).Count();

in order to get -1 when the item cannot be found:

internal static class Utils
{

    public static int IndexOf<T>(this IEnumerable<T> enumerable, T item) => enumerable.IndexOf(item, EqualityComparer<T>.Default);

    public static int IndexOf<T>(this IEnumerable<T> enumerable, T item, EqualityComparer<T> comparer)
    {
        int index = enumerable.TakeWhile(x => comparer.Equals(x, item)).Count();
        return index == enumerable.Count() ? -1 : index;
    }
}

I guess this way could be both the fastest and the simpler. However, I've not tested performances yet.

Have a look at ?"%in%".

dt[dt$fct %in% vc,]
   fct X
1    a 2
3    c 3
5    c 5
7    a 7
9    c 9
10   a 1
12   c 2
14   c 4

You could also use ?is.element:

dt[is.element(dt$fct, vc),]

In addition to all the other answers, here is some code to plot the biplot using sklearn and matplotlib.

import numpy as np
import matplotlib.pyplot as plt
from sklearn import datasets
from sklearn.decomposition import PCA
import pandas as pd
from sklearn.preprocessing import StandardScaler

iris = datasets.load_iris()
X = iris.data
y = iris.target
#In general a good idea is to scale the data
scaler = StandardScaler()
scaler.fit(X)
X=scaler.transform(X)    

pca = PCA()
x_new = pca.fit_transform(X)

def myplot(score,coeff,labels=None):
    xs = score[:,0]
    ys = score[:,1]
    n = coeff.shape[0]
    scalex = 1.0/(xs.max() - xs.min())
    scaley = 1.0/(ys.max() - ys.min())
    plt.scatter(xs * scalex,ys * scaley, c = y)
    for i in range(n):
        plt.arrow(0, 0, coeff[i,0], coeff[i,1],color = 'r',alpha = 0.5)
        if labels is None:
            plt.text(coeff[i,0]* 1.15, coeff[i,1] * 1.15, "Var"+str(i+1), color = 'g', ha = 'center', va = 'center')
        else:
            plt.text(coeff[i,0]* 1.15, coeff[i,1] * 1.15, labels[i], color = 'g', ha = 'center', va = 'center')
plt.xlim(-1,1)
plt.ylim(-1,1)
plt.xlabel("PC{}".format(1))
plt.ylabel("PC{}".format(2))
plt.grid()

#Call the function. Use only the 2 PCs.
myplot(x_new[:,0:2],np.transpose(pca.components_[0:2, :]))
plt.show()

There are a lot of good answers to this question already but another way to take a look at it is the cloud (ala Amazon's AWS) is good for interactive use cases and the grid (ala High Performance Computing) is good for batch use cases.

Cloud is interactive in that you can get resources on demand via self service. The code you run on VMs in the cloud, such as the Apache web server, can server clients interactively.

Grid is batch in that you submit jobs to a job queue after obtaining the credentials from some HPC authority to do so. The code you run on the grid waits in that queue until there are sufficient resources to execute it.

There are good use cases for both styles of computing.

i think the main things to remember about parsing csv is that it follows some simple rules:

a)it's a text file so easily opened b) each row is determined by a line end \n so split the string into lines first c) each row/line has columns determined by a comma so split each line by that to get an array of columns

have a read of this post to see what i am talking about

it's actually very easy to do once you have the hang of it and becomes very useful.

#pragma mark directives show up in Xcode in the menus for direct access to methods. They have no impact on the program at all.

For example, using it with Xcode 4 will make those items appear directly in the Jump Bar.

There is a special pragma mark - which creates a line.

I've solved this problem by configuring MySQL.

SET GLOBAL time_zone = '+3:00';

We can use below Curl command in Windows Command prompt to send the request. Use the Curl command below, replace single quote with double quotes, remove quotes where they are not there in below format and use the ^ symbol.

curl http://localhost:7101/module/url ^
  -d @D:/request.xml ^
  -H "Content-Type: text/xml" ^
  -H "SOAPAction: process" ^
  -H "Authorization: Basic xyz" ^
  -X POST

FLOAT stores floating point numbers with accuracy up to eight places and has four bytes while DOUBLE stores floating point numbers with accuracy upto 18 places and has eight bytes.

In general, one doesn't expand out log(a + b); you just deal with it as is. That said, there are occasionally circumstances where it makes sense to use the following identity:

log(a + b) = log(a * (1 + b/a)) = log a + log(1 + b/a)

(In fact, this identity is often used when implementing log in math libraries).

Add a vertical-align property to the TD, like this:

<td style="width: 259px; vertical-align: top;">
main page
</td>

Please check this:

$servername='localhost';
$username='root';
$password='';
$databasename='MyDb';

$connection = mysqli_connect($servername,$username,$password);

if (!$connection) {
die("Connection failed: " . $conn->connect_error);
}

/*mysqli_query($connection, "DROP DATABASE if exists MyDb;");

if(!mysqli_query($connection, "CREATE DATABASE MyDb;")){
echo "Error creating database: " . $connection->error;
}

mysqli_query($connection, "use MyDb;");
mysqli_query($connection, "DROP TABLE if exists employee;");

$table="CREATE TABLE employee (
id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
firstname VARCHAR(30) NOT NULL,
lastname VARCHAR(30) NOT NULL,
email VARCHAR(50),
reg_date TIMESTAMP
)"; 
$value="INSERT INTO employee (firstname,lastname,email) VALUES ('john', 'steve', '[email protected]')";
if(!mysqli_query($connection, $table)){echo "Error creating table: " . $connection->error;}
if(!mysqli_query($connection, $value)){echo "Error inserting values: " . $connection->error;}*/

These are subplot grid parameters encoded as a single integer. For example, "111" means "1x1 grid, first subplot" and "234" means "2x3 grid, 4th subplot".

Alternative form for add_subplot(111) is add_subplot(1, 1, 1).

Use rel="preload" to make it download independently, then use onload="this.rel='stylesheet'" to apply it to the stylesheet (as="style" is necessary to apply it to stylesheet else the onload won't work)

<link rel="preload" as="style" type="text/css" href="mystyles.css" onload="this.rel='stylesheet'">

In React, props are used for component parameters not for handling data. There is a separate construct for that called state. Whenever you update state the component basically re-renders itself according to the new values.

var BookList = React.createClass({
  // Fetches the book list from the server
  getBookList: function() {
    superagent.get('http://localhost:3100/api/books')
      .accept('json')
      .end(function(err, res) {
        if (err) throw err;

        this.setBookListState(res);
      });
  },
  // Custom function we'll use to update the component state
  setBookListState: function(books) {
    this.setState({
      books: books.data
    });
  },
  // React exposes this function to allow you to set the default state
  // of your component
  getInitialState: function() {
    return {
      books: []
    };
  },
  // React exposes this function, which you can think of as the
  // constructor of your component. Call for your data here.
  componentDidMount: function() {
    this.getBookList();
  },
  render: function() {
    var books = this.state.books.map(function(book) {
      return (
        <li key={book.key}>{book.name}</li>
      );
    });

    return (
      <div>
        <ul>
          {books}
        </ul>
      </div>
    );
  }
});

What I would do is run the loop until the ans is Q

ans=(R)
while not ans=='Q':
    print('Your score is so far '+str(myScore)+'.')
    print("Would you like to roll or quit?")
    ans=input("Roll...")
    if ans=='R':
        R=random.randint(1, 8)
        print("You rolled a "+str(R)+".")
        myScore=R+myScore

If you have control over the server, I would strongly recommend resizing the images server side with ImageMagik. Downloading large images and resizing them on the phone is a waste of many precious resources - bandwidth, battery and memory. All of which are scarce on phones.

Be aware of number of digits in epoch time. Usually they are ten (1534936923) ,then use:

=(A1 / 86400) + 25569    

For thirteen digits (1534936923000) of epoch time adjust the formula:

=(LEFT(A1,LEN(A1)-3) / 86400) + 25569    

to avoid

###################################

Dates or times that are negative or too large display as ######

See more on https://www.epochconverter.com/

I know Coop has already answered this question, but here is a version which also tracks where in the document the div is, rather than relying on a static value:

http://jsfiddle.net/gxRC9/16/

Javascript

var offset = $( ".sticky-header" ).offset();
var sticky = document.getElementById("sticky-header")

$(window).scroll(function() {

    if ( $('body').scrollTop() > offset.top){
        $('.sticky-header').addClass('fixed');
    } else {
         $('.sticky-header').removeClass('fixed');
    } 

});

CSS

.fixed{
     position: fixed;
    top: 0px;
}

Normally I try to do whatever I can to avoid the use of cursors, but the following query will get you everything you need:

--Declare/Set required variables
DECLARE @vchDynamicDatabaseName AS VARCHAR(MAX),
        @vchDynamicQuery As VARCHAR(MAX),
        @DatabasesCursor CURSOR

SET @DatabasesCursor = Cursor FOR

--Select * useful databases on the server
SELECT name 
FROM sys.databases 
WHERE database_id > 4 
ORDER by name

--Open the Cursor based on the previous select
OPEN @DatabasesCursor
FETCH NEXT FROM @DatabasesCursor INTO @vchDynamicDatabaseName
WHILE @@FETCH_STATUS = 0
   BEGIN

   --Insert the select statement into @DynamicQuery 
   --This query will select the Database name, all tables/views and their columns (in a comma delimited field)
   SET @vchDynamicQuery =
   ('SELECT ''' + @vchDynamicDatabaseName + ''' AS ''Database_Name'',
          B.table_name AS ''Table Name'',
         STUFF((SELECT '', '' + A.column_name
               FROM ' + @vchDynamicDatabaseName + '.INFORMATION_SCHEMA.COLUMNS A
               WHERE A.Table_name = B.Table_Name
               FOR XML PATH(''''),TYPE).value(''(./text())[1]'',''NVARCHAR(MAX)'')
               , 1, 2, '''') AS ''Columns''
   FROM ' + @vchDynamicDatabaseName + '.INFORMATION_SCHEMA.COLUMNS B
   WHERE B.TABLE_NAME LIKE ''%%''
         AND B.COLUMN_NAME LIKE ''%%''
   GROUP BY B.Table_Name
   Order BY 1 ASC')

   --Print @vchDynamicQuery
   EXEC(@vchDynamicQuery)

   FETCH NEXT FROM @DatabasesCursor INTO @vchDynamicDatabaseName
END
CLOSE @DatabasesCursor
DEALLOCATE @DatabasesCursor
GO

I added a where clause in the main query (ex: B.TABLE_NAME LIKE ''%%'' AND B.COLUMN_NAME LIKE ''%%'') so that you can search for specific tables and/or columns if you want to.

just import requests and use from json() method :

source = requests.get("url").json()
print(source)

OR you can use this :

import json,urllib.request
data = urllib.request.urlopen("url").read()
output = json.loads(data)
print (output)

found this and it worked for me.

strSQL = "SELECT * FROM DataTable" 

'Where DataTable is the Named range

How can I run SQL statements on a named range within an excel sheet?

As Trying as indicated, volatile deals only with visibility.

Consider this snippet in a concurrent environment:

boolean isStopped = false;
    :
    :

    while (!isStopped) {
        // do some kind of work
    }

The idea here is that some thread could change the value of isStopped from false to true in order to indicate to the subsequent loop that it is time to stop looping.

Intuitively, there is no problem. Logically if another thread makes isStopped equal to true, then the loop must terminate. The reality is that the loop will likely never terminate even if another thread makes isStopped equal to true.

The reason for this is not intuitive, but consider that modern processors have multiple cores and that each core has multiple registers and multiple levels of cache memory that are not accessible to other processors. In other words, values that are cached in one processor's local memory are not visisble to threads executing on a different processor. Herein lies one of the central problems with concurrency: visibility.

The Java Memory Model makes no guarantees whatsoever about when changes that are made to a variable in one thread may become visible to other threads. In order to guarantee that updates are visisble as soon as they are made, you must synchronize.

The volatile keyword is a weak form of synchronization. While it does nothing for mutual exclusion or atomicity, it does provide a guarantee that changes made to a variable in one thread will become visible to other threads as soon as it is made. Because individual reads and writes to variables that are not 8-bytes are atomic in Java, declaring variables volatile provides an easy mechanism for providing visibility in situations where there are no other atomicity or mutual exclusion requirements.

You can select the columns of a groupby:

In [11]: df.groupby(['Country', 'Item_Code'])[["Y1961", "Y1962", "Y1963"]].sum()
Out[11]:
                       Y1961  Y1962  Y1963
Country     Item_Code
Afghanistan 15            10     20     30
            25            10     20     30
Angola      15            30     40     50
            25            30     40     50

Note that the list passed must be a subset of the columns otherwise you'll see a KeyError.

You work like with a standard block, that is a square

.circle {
    width: 10em; height: 10em; 
    -webkit-border-radius: 5em; -moz-border-radius: 5em;
  }

This is feature of CSS 3 and it is not very well suporrted, you can count on firefox and safari for sure.

<div class="circle"><span>1234</span></div>

Apart from standard Heap parameters -Xms and -Xmx it's also good to know -XX:PermSize and -XX:MaxPermSize, which is used to specify size of Perm Gen space because even though you could have space in other generation in heap you can run out of memory if your perm gen space gets full. This link also has nice overview of some important JVM parameters.

As the other answers state, Angular doesn't provide this functionality. jQuery does however, and if you have loaded jQuery as well as Angular, you can use

jQuery.each ( array, function ( index, value) {
    if(condition) return false; // this will cause a break in the iteration
})

See http://api.jquery.com/jquery.each/

Starting with Python 2.6, there is now ast.literal_eval:

>>> import ast
>>> help(ast.literal_eval)
Help on function literal_eval in module ast:

literal_eval(node_or_string)
    Safely evaluate an expression node or a string containing a Python
    expression.  The string or node provided may only consist of the following
    Python literal structures: strings, numbers, tuples, lists, dicts, booleans,
    and None.

Which seems to work, as long as you're sure your strings are going to be either "True" or "False":

>>> ast.literal_eval("True")
True
>>> ast.literal_eval("False")
False
>>> ast.literal_eval("F")
Traceback (most recent call last):
  File "", line 1, in 
  File "/opt/Python-2.6.1/lib/python2.6/ast.py", line 68, in literal_eval
    return _convert(node_or_string)
  File "/opt/Python-2.6.1/lib/python2.6/ast.py", line 67, in _convert
    raise ValueError('malformed string')
ValueError: malformed string
>>> ast.literal_eval("'False'")
'False'

I wouldn't normally recommend this, but it is completely built-in and could be the right thing depending on your requirements.

What you need to do is this:

int[] list1 = new int[4] { 1, 2, 3, 4};
int[] list2 = new int[4] { 5, 6, 7, 8};
int[] list3 = new int[4] { 1, 3, 2, 1 };
int[] list4 = new int[4] { 5, 4, 3, 2 };

int[][] lists = new int[][] {  list1 ,  list2 ,  list3 ,  list4  };

Another alternative would be to create a List<int[]> type:

List<int[]> data=new List<int[]>(){list1,list2,list3,list4};

The answer by @T.J.Crowder is Java 6 - in java 7 the valid answer is the one by @McIntosh - though its use of Charset for name for UTF -8 is discouraged:

List<String> lines = Files.readAllLines(Paths.get("/tmp/test.csv"),
    StandardCharsets.UTF_8);
for(String line: lines){ /* DO */ }

Reminds a lot of the Guava way posted by Skeet above - and of course same caveats apply. That is, for big files (Java 7):

BufferedReader reader = Files.newBufferedReader(path, StandardCharsets.UTF_8);
for (String line = reader.readLine(); line != null; line = reader.readLine()) {}

For getting the list of filenames in a specified folder, you can use:

fs.readdir(directory_path, callback_function)

This will return a list which you can parse by simple list indexing like file[0],file[1], etc.

In following code, we don't need to hard code the credentials.

service.Proxy = WebRequest.DefaultWebProxy;
service.Credentials = System.Net.CredentialCache.DefaultCredentials; ;
service.Proxy.Credentials = System.Net.CredentialCache.DefaultCredentials;

In short, yes. But there are times when you might favor one vs. the other. Google "case switch vs. if else". There are some discussions already on SO too. Also, here is a good video that talks about it in the context of MATLAB:

http://blogs.mathworks.com/pick/2008/01/02/matlab-basics-switch-case-vs-if-elseif/

Personally, when I have 3 or more cases, I usually just go with case/switch.

SELECT 
    MIN(Column), MAX(Column), UserId 
FROM 
    Table_Name
WHERE 
    (Conditions)
GROUP BY 
    UserId DESC

or

SELECT        
    MAX(Column) 
FROM            
    TableName
WHERE        
    (Filter)

UNION ALL

SELECT        
    MIN(Column)
FROM            
    TableName AS Tablename1
WHERE        
    (Filter)
ORDER BY 
    Column

here's bash code for SCP with a .pem key file. Just save it to a script.sh file then run with 'sh script.sh'

Enjoy

#!/bin/bash
#Error function
function die(){
echo "$1"
exit 1
}

Host=ec2-53-298-45-63.us-west-1.compute.amazonaws.com
User=ubuntu
#Directory at sent destination
SendDirectory=scp
#File to send at host
FileName=filetosend.txt
#Key file
Key=MyKeyFile.pem

echo "Aperture in Process...";

#The code that will send your file scp
scp -i $Key $FileName $User@$Host:$SendDirectory || \
die "@@@@@@@Houston we have problem"

echo "########Aperture Complete#########";

Arguments and parameters are different in that parameters are used to different values in the program and The arguments are passed the same value in the program so they are used in c++. But no difference in c. It is the same for arguments and parameters in c.

"Validation injection without submit looping":

I just want to check reCaptcha and some other stuff before HTML5 validation, so I did something like that (the validation function returns true or false):

$(document).ready(function(){
   var application_form = $('form#application-form');

   application_form.on('submit',function(e){

        if(application_form_extra_validation()===true){
           return true;
        }

        e.preventDefault();

   });
});

I found @naota's solution useful, and extended it to use dates as well

//taken from StackOverflow:
//https://stackoverflow.com/questions/3880615/how-can-i-determine-whether-a-given-string-represents-a-date
function isDate(val) {
    var d = new Date(val);
    return !isNaN(d.valueOf());
}

var getVal = function(elm, n){
  var v = $(elm).children('td').eq(n).text().toUpperCase();
  if($.isNumeric(v)){
    v = parseFloat(v,10);
    return v;
  }
  if (isDate(v)) {
    v = new Date(v);
    return v;
  }
  return v;
}

Just invoke ruby XXXXX.rb in terminal, if the interpreter is in your $PATH variable.

( this can hardly be a rails thing, until you have it running. )

I solved the same problem by installing "matplotlib".

Try any one of the below. These should work:

int a = Character.getNumericValue('3');
int a = Integer.parseInt(String.valueOf('3');

Working Query:

SELECT replace(col_name , ' ','') FROM table_name;

While this doesn't :

SELECT trim(col_name) FROM table_name;

For most multiline strings using an XML element with an inner CDATA block is easier to avoid having to escape anything for simple raw string data.

Dim s as string = <s><![CDATA[Line 1
line 2
line 3]]></s>.Value

Note that I've seen many people state the same format but without the wrapping "< s >" tag (just the CDATA block) but visual studio Automatic formatting seams to alter the leading whitespace of each line then. I think this is due to the object inheritance structure behind the Linq "X" objects. CDATA is not a "Container", the outer block is an XElement which inherits from XContainer.

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,.

You don't need to make a custom encoder class to supply the default method - it can be passed in as a keyword argument:

import json

def serialize_sets(obj):
    if isinstance(obj, set):
        return list(obj)

    return obj

json_str = json.dumps(set([1,2,3]), default=serialize_sets)
print(json_str)

results in [1, 2, 3] in all supported Python versions.

You can use the next code:

JS

    function showname () {
      var name = document.getElementById('fileInput'); 
      alert('Selected file: ' + name.files.item(0).name);
      alert('Selected file: ' + name.files.item(0).size);
      alert('Selected file: ' + name.files.item(0).type);
    };

HTML

<body>
    <p>
        <input type="file" id="fileInput" multiple onchange="showname()"/>
    </p>    
</body>

Please follow these steps carefully to enable it.

1) create Spring Boot project with SB V1.3 and add "Devtools" (1*) to dependencies

2) invoke Help->Find Action... and type "Registry", in the dialog search for "automake" and enable the entry "compiler.automake.allow.when.app.running", close dialog

3) enable background compilation in Settings->Build, Execution, Deployment->Compiler "Make project automatically"

4) open Spring Boot run config, you should get warning message if everything is configured correctly

5) Run your app, change your classes on-the-fly

Please report your experiences and problems as comments to this issue.

click here for more info

In powershell 5.1 you can actually use install-package, but it can't take extra msi arguments.

install-package .\file.msi

Otherwise with start-process and waiting:

start -wait file.msi ALLUSERS=1,INSTALLDIR=C:\FILE

In my experience, first name/last name fields should be at least 48 characters -- there are names from some countries such as Malaysia or India that are very long in their full form.

Phone numbers and postcodes you should always treat as text, not numbers. The normal reason given is that there are postcodes that begin with 0, and in some countries, phone numbers can also begin with 0. But the real reason is that they aren't numbers -- they're identifiers that happen to be made up of numerical digits (and that's ignoring countries like Canada that have letters in their postcodes). So store them in a text field.

In MySQL you can use VARCHAR fields for this type of information. Whilst it sounds lazy, it means you don't have to be too concerned about the right minimum size.

Update for PHP 7 (thanks shock_gone_wild)

PHP 7 introduces the so called null coalescing operator which simplifies the below statements to:

$var = $var ?? "default";

Before PHP 7

No, there is no special operator or special syntax for this. However, you could use the ternary operator:

$var = isset($var) ? $var : "default";

Or like this:

isset($var) ?: $var = 'default';

Any chance that you changed the name of your table view from "tableView" to "myTableView" at some point?

Thanx @krd, I am using your error catch process, but had to update the print and except statements. I am using Python 2.7.6 on Linux Mint 17.2.

Also, it was unclear where the output string was coming from. My update:

import subprocess

# Output returned in error handler
try:
    print("Ping stdout output on success:\n" + 
           subprocess.check_output(["ping", "-c", "2", "-w", "2", "1.1.1.1"]))
except subprocess.CalledProcessError as e:
    print("Ping stdout output on error:\n" + e.output)

# Output returned normally
try:
    print("Ping stdout output on success:\n" + 
           subprocess.check_output(["ping", "-c", "2", "-w", "2", "8.8.8.8"]))
except subprocess.CalledProcessError as e:
    print("Ping stdout output on error:\n" + e.output)

I see an output like this:

Ping stdout output on error:
PING 1.1.1.1 (1.1.1.1) 56(84) bytes of data.

--- 1.1.1.1 ping statistics ---
2 packets transmitted, 0 received, 100% packet loss, time 1007ms


Ping stdout output on success:
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=59 time=37.8 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=59 time=38.8 ms

--- 8.8.8.8 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 37.840/38.321/38.802/0.481 ms

This is an elaboration on @Jeff M's and my comments.

When you do this:

a, b = c, d

It works with tuple packing and unpacking. You can separate the packing and unpacking steps:

_ = c, d
a, b = _

The first line creates a tuple called _ which has two elements, the first with the value of c and the second with the value of d. The second line unpacks the _ tuple into the variables a and b. This breaks down your one huge line:

a, b, c, d, e, f, g, h, i, j = True, True, True, True, True, False, True, True, True, True

Into two smaller lines:

_ = True, True, True, True, True, False, True, True, True, True
a, b, c, d, e, f, g, h, i, j = _

It will give you the exact same result as the first line (including the same exception if you add values or variables to one part but forget to update the other). However, in this specific case, yan's answer is perhaps the best.

If you have a list of values, you can still unpack them. You just have to convert it to a tuple first. For example, the following will assign a value between 0 and 9 to each of a through j, respectively:

a, b, c, d, e, f, g, h, i, j = tuple(range(10))

EDIT: Neat trick to assign all of them as true except element 5 (variable f):

a, b, c, d, e, f, g, h, i, j = tuple(x != 5 for x in range(10))

Use Thread.sleep(long millis).

Causes the currently executing thread to sleep (temporarily cease execution) for the specified number of milliseconds, subject to the precision and accuracy of system timers and schedulers. The thread does not lose ownership of any monitors.

One minute would be (60*1000) = 60000 milliseconds.

For example, this loop will print the current time once every 5 seconds:

    try {
        while (true) {
            System.out.println(new Date());
            Thread.sleep(5 * 1000);
        }
    } catch (InterruptedException e) {
        e.printStackTrace();
    }

If your sleep period becomes too large for int, explicitly compute in long (e.g. 1000L).

As mentioned in other people's comments, the top solution given here was not working for me in Ansible 2.2, particularly when also using with_items.

It appears that OP's intended approach does work now with a slight change to the quoting of item.

- set_fact: something="{{ something + [ item ] }}"
  with_items:
    - one
    - two
    - three

And a longer example where I've handled the initial case of the list being undefined and added an optional when because that was also causing me grief:

- set_fact: something="{{ something|default([]) + [ item ] }}"
  with_items:
    - one
    - two
    - three
  when: item.name in allowed_things.item_list

Try this:

foreach($samplearr as $key => $item){
  print "<tr><td>" 
      . $key 
      . "</td><td>"  
      . $item['value1'] 
      . "</td><td>" 
      . $item['value2'] 
      . "</td></tr>";
}

Normally the parameter -d is interpreted as form-encoded. You need the -H parameter:

curl -v -H "Content-Type: application/json" -X POST -d '{"screencast":{"subject":"tools"}}' \
http://localhost:3570/index.php/trainingServer/screencast.json

def longestincrsub(arr1):
    n=len(arr1)
    l=[1]*n
    for i in range(0,n):
        for j in range(0,i)  :
            if arr1[j]<arr1[i] and l[i]<l[j] + 1:
                l[i] =l[j] + 1
    l.sort()
    return l[-1]
arr1=[10,22,9,33,21,50,41,60]
a=longestincrsub(arr1)
print(a)

even though there is a way by which you can solve this in O(nlogn) time(this solves in O(n^2) time) but still this way gives the dynamic programming approach which is also good .

This question is asked every day in some variation. The answer is: keep your data out of your variable names, and this is the obligatory blog post.

In this case, why not make a list of objs?

objs = [MyClass() for i in range(10)]
for obj in objs:
    other_object.add(obj)

objs[0].do_sth()

If the second observable is hot, there is another way to do pause/resume:

var pauser = new Rx.Subject();
var source1 = Rx.Observable.interval(1000).take(1);
/* create source and pause */
var source2 = Rx.Observable.interval(1000).pausable(pauser);

source1.doOnCompleted(function () { 
  /* resume paused source2 */ 
  pauser.onNext(true);
}).subscribe(function(){
  // do something
});

source2.subscribe(function(){
  // start to recieve data 
});

Also you can use buffered version pausableBuffered to keep data during pause is on.

If you use MyISAM tables, the fastest way is querying directly the stats:

select table_name, table_rows 
     from information_schema.tables 
where 
     table_schema='databasename' and 
     table_name in ('user_table','cat_table','course_table')

If you have InnoDB you have to query with count() as the reported value in information_schema.tables is wrong.

This work for me

from flask import Flask
from flask import Response

app = Flask(__name__)

@app.route("/")
def home():
    return Response(headers={'Access-Control-Allow-Origin':'*'})

if __name__ == "__main__":
    app.run()

I too wanted to do something similar, this is what I found: (SDK 3.1.3)

I have a view controller A (itself owned by a Nav controller) which loads VC B on a button press:

In AViewController.m

BViewController *bController = [[BViewController alloc] initWithNibName:@"Bnib" bundle:nil];
[self.navigationController pushViewController:bController animated:YES];
[bController release];

Now VC B has its interface from Bnib, but when a button is pressed, I want to go to an 'edit mode' which has a separate UI from a different nib, but I don't want a new VC for the edit mode, I want the new nib to be associated with my existing B VC.

So, in BViewController.m (in button press method)

NSArray *nibObjects = [[NSBundle mainBundle] loadNibNamed:@"EditMode" owner:self options:nil];
UIView *theEditView = [nibObjects objectAtIndex:0];
self.editView = theEditView;
[self.view addSubview:theEditView];

Then on another button press (to exit edit mode):

[editView removeFromSuperview];

and I'm back to my original Bnib.

This works fine, but note my EditMode.nib has only 1 top level obj in it, a UIView obj. It doesn't matter whether the File's Owner in this nib is set as BViewController or the default NSObject, BUT make sure the View Outlet in the File's Owner is NOT set to anything. If it is, then I get a exc_bad_access crash and xcode proceeds to load 6677 stack frames showing an internal UIView method repeatedly called... so looks like an infinite loop. (The View Outlet IS set in my original Bnib however)

Hope this helps.

You can do it directly from Drive & Gmail. Here's how:

1.Upload an image to Google drive and set permissions for viewing (can be public OR anyone w/ link)

1. Go to Gmail>Compose. Select the + next to attachment icon.

2. Select drive icon (triangle shape)

3. Navigate to your image and right-click copy image url

4. Paste into web browser or embed on webpages as needed.

Yes you can do it yourself. It is just a matter of grabbing the sources of the page and parsing them the way you want.

There are various possibilities. A good combo is using python-requests (built on top of urllib2, it is urllib.request in Python3) and BeautifulSoup4, which has its methods to select elements and also permits CSS selectors:

import requests
from BeautifulSoup4 import BeautifulSoup as bs
request = requests.get("http://foo.bar")
soup = bs(request.text) 
some_elements = soup.find_all("div", class_="myCssClass")

Some will prefer xpath parsing or jquery-like pyquery, lxml or something else.

When the data you want is produced by some JavaScript, the above won't work. You either need python-ghost or Selenium. I prefer the latter combined with PhantomJS, much lighter and simpler to install, and easy to use:

from selenium import webdriver
client = webdriver.PhantomJS()
client.get("http://foo")
soup = bs(client.page_source)

I would advice to start your own solution. You'll understand Scrapy's benefits doing so.

ps: take a look at scrapely: https://github.com/scrapy/scrapely

pps: take a look at Portia, to start extracting information visually, without programming knowledge: https://github.com/scrapinghub/portia

You may want to use the appendTo function (which adds to the end of the element):

$("#source").appendTo("#destination");

Alternatively you could use the prependTo function (which adds to the beginning of the element):

$("#source").prependTo("#destination");

Example:

$("#appendTo").click(function() {_x000D_
  $("#moveMeIntoMain").appendTo($("#main"));_x000D_
});_x000D_
$("#prependTo").click(function() {_x000D_
  $("#moveMeIntoMain").prependTo($("#main"));_x000D_
});

#main {_x000D_
  border: 2px solid blue;_x000D_
  min-height: 100px;_x000D_
}_x000D_
_x000D_
.moveMeIntoMain {_x000D_
  border: 1px solid red;_x000D_
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
<div id="main">main</div>_x000D_
<div id="moveMeIntoMain" class="moveMeIntoMain">move me to main</div>_x000D_
_x000D_
<button id="appendTo">appendTo main</button>_x000D_
<button id="prependTo">prependTo main</button>

Spring Pageable has a Sort included. So if your request has the values it will return a sorted pageable.

request: domain.com/endpoint?sort=[FIELDTOSORTBY]&[FIELDTOSORTBY].dir=[ASC|DESC]&page=0&size=20

That should return a sorted pageable by field provided in the provided order.

Simplest Answer:

inputString = str(input("Please type a sentence: "))

vowel_count = 0

inputString =inputString.lower()

vowel_count+=inputString.count("a")
vowel_count+=inputString.count("e")
vowel_count+=inputString.count("i")
vowel_count+=inputString.count("o")
vowel_count+=inputString.count("u")

print(vowel_count)

$str = substr($str, 1);

See PHP manual example 3

echo substr('abcdef', 1);     // bcdef

Note:

unset($str[0]) 

will not work as you cannot unset part of a string:-

Fatal error: Cannot unset string offsets

Here is a more generic solution based on @Arun answer

public abstract class TextViewLinkHandler extends LinkMovementMethod {

    public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
        if (event.getAction() != MotionEvent.ACTION_UP)
            return super.onTouchEvent(widget, buffer, event);

        int x = (int) event.getX();
        int y = (int) event.getY();

        x -= widget.getTotalPaddingLeft();
        y -= widget.getTotalPaddingTop();

        x += widget.getScrollX();
        y += widget.getScrollY();

        Layout layout = widget.getLayout();
        int line = layout.getLineForVertical(y);
        int off = layout.getOffsetForHorizontal(line, x);

        URLSpan[] link = buffer.getSpans(off, off, URLSpan.class);
        if (link.length != 0) {
            onLinkClick(link[0].getURL());
        }
        return true;
    }

    abstract public void onLinkClick(String url);
}

To use it just implement onLinkClick of TextViewLinkHandler class. For instance:

    textView.setMovementMethod(new TextViewLinkHandler() {
        @Override
        public void onLinkClick(String url) {
            Toast.makeText(textView.getContext(), url, Toast.LENGTH_SHORT).show();
        }
    });

To measure the actual number of used threads, you can check Thread.activeCount():

    Runnable r = () -> IntStream
            .range(-42, +42)
            .parallel()
            .map(i -> Thread.activeCount())
            .max()
            .ifPresent(System.out::println);

    ForkJoinPool.commonPool().submit(r).join();
    new ForkJoinPool(42).submit(r).join();

This can produce on a 4-core CPU an output like:

5 // common pool
23 // custom pool

Without .parallel() it gives:

3 // common pool
4 // custom pool

Just to kick a long-dead horse, because I've had to implement an optional argument in the middle of two or more required arguments. Use the arguments array and use the last one as the required non-optional argument.

my_function() {
  var options = arguments[argument.length - 1];
  var content = arguments.length > 1 ? arguments[0] : null;
}

You need to close all your connexions for example: If you make an INSERT INTO statement you need to close the statement and your connexion in this way:

statement.close();
Connexion.close():

And if you make a SELECT statement you need to close the statement, the connexion and the resultset in this way:

resultset.close();
statement.close();
Connexion.close();

I did this and it worked

Easier solution:

SELECT numtodsinterval(date1-date2,'day') time_difference from dates;

For timestamps:

SELECT (extract(DAY FROM time2-time1)*24*60*60)+ 
(extract(HOUR FROM time2-time1)*60*60)+
(extract(MINUTE FROM time2-time1)*60)+
extract(SECOND FROM time2-time1)
into diff FROM dual;

RETURN diff;

I created the following extension:

extension String {
    func substring(from from:Int, to:Int) -> String? {
        if from<to && from>=0 && to<self.characters.count {
            let rng = self.startIndex.advancedBy(from)..<self.startIndex.advancedBy(to)
            return self.substringWithRange(rng)
        } else {
            return nil
        }
    }
}

example of use:

print("abcde".substring(from: 1, to: 10)) //nil
print("abcde".substring(from: 2, to: 4))  //Optional("cd")
print("abcde".substring(from: 1, to: 0))  //nil
print("abcde".substring(from: 1, to: 1))  //nil
print("abcde".substring(from: -1, to: 1)) //nil

I think that the thing you must keep in mind is that your XML is being processed by a machine, not a human, so it only needs to be readable for the machine.

In other words, I think you should use whatever XML schema you need to make parsing/processing the rules as efficient as possible at run time.

As far as your current schema goes, I think that the id attribute should be unique per element, so perhaps you should use a different attribute to capture the relationship among your IF, THEN, and ELSE elements.

#include <stdio.h>
#include <stdlib.h>

// ....


system("my_bash_script.sh");

A new answer that uses dplyr and tidyr:

Extracts the desired column names and converts to a list

library(tidyverse)

col_names <- raw_dta %>% 
  slice(2) %>%
  pivot_longer(
    cols = "X2":"X10", # until last named column
    names_to = "old_names",
    values_to = "new_names") %>% 
  pull(new_names)

Removes the incorrect rows and adds the correct column names

dta <- raw_dta %>% 
  slice(-1, -2) %>% # Removes the rows containing new and original names
  set_names(., nm = col_names)

The possible reason can also be that you have not inherited Controller from ApiController. Happened with me took a while to understand the same.

Thanks ya'll. I used this:

=CONCATENATE((number1/GCD(number1,number2)),":",((number2/GCD(number1,number2))))

If you've got 2007 this works great.

For those who landed here and are searching for a solution that merges N arrays AND also sums the values of identical keys found in the N arrays, I've written this function that works recursively as well. (See: https://gist.github.com/Nickology/f700e319cbafab5eaedc)

Example:

$a = array( "A" => "bob", "sum" => 10, "C" => array("x","y","z" => 50) );
$b = array( "A" => "max", "sum" => 12, "C" => array("x","y","z" => 45) );
$c = array( "A" => "tom", "sum" =>  8, "C" => array("x","y","z" => 50, "w" => 1) );

print_r(array_merge_recursive_numeric($a,$b,$c));

Will result in:

Array
(
    [A] => tom
    [sum] => 30
    [C] => Array
        (
            [0] => x
            [1] => y
            [z] => 145
            [w] => 1
        )

)

Here's the code:

<?php 
/**
 * array_merge_recursive_numeric function.  Merges N arrays into one array AND sums the values of identical keys.
 * WARNING: If keys have values of different types, the latter values replace the previous ones.
 * 
 * Source: https://gist.github.com/Nickology/f700e319cbafab5eaedc
 * @params N arrays (all parameters must be arrays)
 * @author Nick Jouannem <[email protected]>
 * @access public
 * @return void
 */
function array_merge_recursive_numeric() {

    // Gather all arrays
    $arrays = func_get_args();

    // If there's only one array, it's already merged
    if (count($arrays)==1) {
        return $arrays[0];
    }

    // Remove any items in $arrays that are NOT arrays
    foreach($arrays as $key => $array) {
        if (!is_array($array)) {
            unset($arrays[$key]);
        }
    }

    // We start by setting the first array as our final array.
    // We will merge all other arrays with this one.
    $final = array_shift($arrays);

    foreach($arrays as $b) {

        foreach($final as $key => $value) {

            // If $key does not exist in $b, then it is unique and can be safely merged
            if (!isset($b[$key])) {

                $final[$key] = $value;

            } else {

                // If $key is present in $b, then we need to merge and sum numeric values in both
                if ( is_numeric($value) && is_numeric($b[$key]) ) {
                    // If both values for these keys are numeric, we sum them
                    $final[$key] = $value + $b[$key];
                } else if (is_array($value) && is_array($b[$key])) {
                    // If both values are arrays, we recursively call ourself
                    $final[$key] = array_merge_recursive_numeric($value, $b[$key]);
                } else {
                    // If both keys exist but differ in type, then we cannot merge them.
                    // In this scenario, we will $b's value for $key is used
                    $final[$key] = $b[$key];
                }

            }

        }

        // Finally, we need to merge any keys that exist only in $b
        foreach($b as $key => $value) {
            if (!isset($final[$key])) {
                $final[$key] = $value;
            }
        }

    }

    return $final;

}

?>

update of @Vladimir Tolstikov's answer

Create a Child Component that use ngOnChanges.

ChildComponent.ts::

import { Component, OnChanges, Input } from '@angular/core';
import { ActivatedRoute } from '@angular/router';

@Component({
  selector: 'child',
  templateUrl: 'child.component.html',
})

export class ChildComponent implements OnChanges {
  @Input() child_id;

  constructor(private route: ActivatedRoute) { }

  ngOnChanges() {
    // create header using child_id
    console.log(this.child_id);
  }
}

now use it in MasterComponent's template and pass data to ChildComponent like:

<child [child_id]="child_id"></child>

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:padding="10dp"
    android:shape="rectangle">

    <gradient
        android:endColor="@color/color1"
        android:gradientRadius="250dp"
        android:startColor="#8F15DA"
        android:type="radial" />

    <corners
        android:bottomLeftRadius="50dp"
        android:bottomRightRadius="50dp"
        android:radius="3dp"
        android:topLeftRadius="0dp"
        android:topRightRadius="50dp" />
</shape>

Check your routing method:

if your routing state is like this

 .state('app.register', {
    url: '/register',
    views: {
      'menuContent': {
        templateUrl: 'templates/register.html',
      }
    }
  }) 

then you should use

$location.path("/app/register");

In JavaScript. A CustomCounter class takes care of incrementing indexes. Then just output the different possible combinations.

var CustomCounter = function(min, max) {
    this.min = min.slice(0)
    this.max = max.slice(0)
    this.curr = this.min.slice(0)
    this.length = this.min.length
}

CustomCounter.prototype.increment = function() {
    for (var i = this.length - 1, ii = 0; i >= ii; i--) {
        this.curr[i] += 1
        if (this.curr[i] > this.max[i]) {
            this.curr[i] = 0
        } else {
            break
        }
    }
}

CustomCounter.prototype.is_max = function() {
    for (var i = 0, ii = this.length; i < ii; ++i) {
        if (this.curr[i] !== this.max[i]) {
            return false
        }
    }
    return true
}

var PhoneNumber = function(phone_number) {
    this.phone_number = phone_number
    this.combinations = []
}

PhoneNumber.number_to_combinations = {
    1: ['1']
  , 2: ['2', 'a', 'b', 'c']
  , 3: ['3', 'd', 'e', 'f']
  , 4: ['4', 'g', 'h', 'i']
  , 5: ['5', 'j', 'k', 'l']
  , 6: ['6', 'm', 'n', 'o']
  , 7: ['7', 'p', 'q', 'r', 's']
  , 8: ['8', 't', 'u', 'v']
  , 9: ['9', 'w', 'x', 'y', 'z']
  , 0: ['0', '+']
}

PhoneNumber.prototype.get_combination_by_digit = function(digit) {
    return PhoneNumber.number_to_combinations[digit]
}

PhoneNumber.prototype.add_combination_by_indexes = function(indexes) {
    var combination = ''
    for (var i = 0, ii = indexes.length; i < ii; ++i) {
        var phone_number_digit = this.phone_number[i]
        combination += this.get_combination_by_digit(phone_number_digit)[indexes[i]]
    }

    this.combinations.push(combination)
}

PhoneNumber.prototype.update_combinations = function() {
    var min_indexes = []
      , max_indexes = []

    for (var i = 0, ii = this.phone_number.length; i < ii; ++i) {
        var digit = this.phone_number[i]
        min_indexes.push(0)
        max_indexes.push(this.get_combination_by_digit(digit).length - 1)
    }

    var c = new CustomCounter(min_indexes, max_indexes)

    while(true) {
        this.add_combination_by_indexes(c.curr)
        c.increment()

        if (c.is_max()) {
            this.add_combination_by_indexes(c.curr)
            break
        }
    }
}

var phone_number = new PhoneNumber('120')
phone_number.update_combinations()
console.log(phone_number.combinations)

Just like you do for getting something from the CNode you also need to do for the ANode

XmlNodeList xnList = xml.SelectNodes("/Element[@*]");
foreach (XmlNode xn in xnList)
{
  XmlNode anode = xn.SelectSingleNode("ANode");
    if (anode!= null)
    {
        string id = anode["ID"].InnerText;
        string date = anode["Date"].InnerText;
        XmlNodeList CNodes = xn.SelectNodes("ANode/BNode/CNode");
        foreach (XmlNode node in CNodes)
        {
         XmlNode example = node.SelectSingleNode("Example");
         if (example != null)
         {
            string na = example["Name"].InnerText;
            string no = example["NO"].InnerText;
         }
        }
    }
}

Java 8 introduced a nice computeIfAbsent default method to Map interface which stores lazy-computed value and so doesn't break map contract:

Map<Key, Graph> map = new HashMap<>();
map.computeIfAbsent(aKey, key -> createExpensiveGraph(key));

Origin: http://blog.javabien.net/2014/02/20/loadingcache-in-java-8-without-guava/

Disclamer: This answer doesn't match exactly what OP asked but may be handy in some cases matching question's title when keys number is limited and caching of different values would be profitable. It shouldn't be used in opposite case with plenty of keys and same default value as this would needlessly waste memory.

If you want to check if file exists using javascript then no, as far as I know, javascript has no access to file system due to security reasons.. But as for me it is not clear enough what are you trying to do..

First thing first, button() is a jQuery ui function to create a button widget which has nothing to do with jQuery core, it just styles the button.
So if you want to use the widget add jQuery ui's javascript and CSS files or alternatively remove it, like this:

$("#filter").click(function(){
    alert('clicked!');
});

Another thing that might have caused you the problem is if you didn't wait for the input to be rendered and wrote the code before the input. jQuery has the ready function, or it's alias $(func) which execute the callback once the DOM is ready.
Usage:

$(function(){
    $("#filter").click(function(){
        alert('clicked!');
    });
});

So even if the order is this it will work:

$(function(){
    $("#filter").click(function(){
        alert('clicked!');
    });
});

<input type="button" id="filter" name="filter" value="Filter" />

DEMO

I was having the same issue, I made the table fixed and then specified my td width. If you have th you can do those as well.

<style>
table {
table-layout: fixed;
word-wrap: break-word;
}
</style>

<td width="10%" /td>

I didn't have any luck with .table-nonfluid.

This uses rand with a seed like one of the other answers, but it is not necessary to provide a seed on every call. Providing it on the first call is sufficient.

This is my modified code.

IF EXISTS (SELECT * FROM sys.objects WHERE type = 'P' AND object_id = OBJECT_ID(N'usp_generateIdentifier'))
DROP PROCEDURE usp_generateIdentifier
GO

create procedure usp_generateIdentifier
    @minLen int = 1
    , @maxLen int = 256
    , @seed int output
    , @string varchar(8000) output
as
begin
    set nocount on;
    declare @length int;
    declare @alpha varchar(8000)
        , @digit varchar(8000)
        , @specials varchar(8000)
        , @first varchar(8000)

    select @alpha = 'qwertyuiopasdfghjklzxcvbnm'
        , @digit = '1234567890'
        , @specials = '_@#$&'
    select @first = @alpha + '_@';

    -- Establish our rand seed and store a new seed for next time
    set  @seed = (rand(@seed)*2147483647);

    select @length = @minLen + rand() * (@maxLen-@minLen);
    --print @length

    declare @dice int;
    select @dice = rand() * len(@first);
    select @string = substring(@first, @dice, 1);

    while 0 < @length 
    begin
        select @dice = rand() * 100;
        if (@dice < 10) -- 10% special chars
        begin
            select @dice = rand() * len(@specials)+1;
            select @string = @string + substring(@specials, @dice, 1);
        end
        else if (@dice < 10+10) -- 10% digits
        begin
            select @dice = rand() * len(@digit)+1;
            select @string = @string + substring(@digit, @dice, 1);
        end
        else -- rest 80% alpha
        begin
            select @dice = rand() * len(@alpha)+1;

            select @string = @string + substring(@alpha, @dice, 1);
        end

        select @length = @length - 1;   
    end
end
go

With a small change, it worked fine for me

$qb=$this->dm->createQueryBuilder('AppBundle:CSSDInstrument')
               ->update()
               ->field('status')->set($status)
               ->field('id')->equals($instrumentId)
               ->getQuery()
               ->execute();

function get_domain($url = SITE_URL)
{
    preg_match("/[a-z0-9\-]{1,63}\.[a-z\.]{2,6}$/", parse_url($url, PHP_URL_HOST), $_domain_tld);
    return $_domain_tld[0];
}

get_domain('http://www.cdl.gr'); //cdl.gr
get_domain('http://cdl.gr'); //cdl.gr
get_domain('http://www2.cdl.gr'); //cdl.gr

Try this

<select>
<option value="" style="display:none">Please select</option>
<option value="one">One</option>
</select>

I use an ::after element in the cell where I want to set a minimal width regardless of the text present, like this:

.cell::after {
    content: "";
    width: 20px;
    display: block;
}

I don't have to set width on the table parent nor use table-layout.

i got the same bug, and i fixed it when i close the AndroidStudio and delete the dir like C:\Users\Jalal D\.gradle\caches\transforms-1\ in the build error info.

Here's some more detailed information on what Client, Resource, and Session are all about.

Client:

• low-level AWS service access
• generated from AWS service description
• exposes botocore client to the developer
• typically maps 1:1 with the AWS service API
• all AWS service operations are supported by clients
• snake-cased method names (e.g. ListBuckets API => list_buckets method)

Here's an example of client-level access to an S3 bucket's objects (at most 1000**):

import boto3

client = boto3.client('s3')
response = client.list_objects_v2(Bucket='mybucket')
for content in response['Contents']:
    obj_dict = client.get_object(Bucket='mybucket', Key=content['Key'])
    print(content['Key'], obj_dict['LastModified'])

** you would have to use a paginator, or implement your own loop, calling list_objects() repeatedly with a continuation marker if there were more than 1000.

Resource:

• higher-level, object-oriented API
• generated from resource description
• uses identifiers and attributes
• has actions (operations on resources)
• exposes subresources and collections of AWS resources
• does not provide 100% API coverage of AWS services

Here's the equivalent example using resource-level access to an S3 bucket's objects (all):

import boto3

s3 = boto3.resource('s3')
bucket = s3.Bucket('mybucket')
for obj in bucket.objects.all():
    print(obj.key, obj.last_modified)

Note that in this case you do not have to make a second API call to get the objects; they're available to you as a collection on the bucket. These collections of subresources are lazily-loaded.

You can see that the Resource version of the code is much simpler, more compact, and has more capability (it does pagination for you). The Client version of the code would actually be more complicated than shown above if you wanted to include pagination.

Session:

• stores configuration information (primarily credentials and selected region)
• allows you to create service clients and resources
• boto3 creates a default session for you when needed

A useful resource to learn more about these boto3 concepts is the introductory re:Invent video.

This happened to me because I put a variable in the regex and sometimes its string value included a slash. Solution: preg_quote.

Implement custom adapter for your class:

public class MyClassAdapter extends ArrayAdapter<MyClass> {

    private static class ViewHolder {
        private TextView itemView;
    }

    public MyClassAdapter(Context context, int textViewResourceId, ArrayList<MyClass> items) {
        super(context, textViewResourceId, items);
    }

    public View getView(int position, View convertView, ViewGroup parent) {

        if (convertView == null) {
            convertView = LayoutInflater.from(this.getContext())
            .inflate(R.layout.listview_association, parent, false);

            viewHolder = new ViewHolder();
            viewHolder.itemView = (TextView) convertView.findViewById(R.id.ItemView);

            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }

        MyClass item = getItem(position);
        if (item!= null) {
            // My layout has only one TextView
                // do whatever you want with your string and long
            viewHolder.itemView.setText(String.format("%s %d", item.reason, item.long_val));
        }

        return convertView;
    }
}

For those not very familiar with the Android framework, this is explained in better detail here: https://github.com/codepath/android_guides/wiki/Using-an-ArrayAdapter-with-ListView.

It is super easy by changing the heap size as it was mentioned. Just easily by going to Pycharm HELP -> Edit custom VM option ... and change it to:

-Xms2048m
-Xmx2048m

First create a class like:

public class Encryption
    { 
        public static string Encrypt(string clearText)
        {
            string EncryptionKey = "MAKV2SPBNI99212";
            byte[] clearBytes = Encoding.Unicode.GetBytes(clearText);
            using (Aes encryptor = Aes.Create())
            {
                Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(EncryptionKey, new byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76 });
                encryptor.Key = pdb.GetBytes(32);
                encryptor.IV = pdb.GetBytes(16);
                using (MemoryStream ms = new MemoryStream())
                {
                    using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateEncryptor(), CryptoStreamMode.Write))
                    {
                        cs.Write(clearBytes, 0, clearBytes.Length);
                        cs.Close();
                    }
                    clearText = Convert.ToBase64String(ms.ToArray());
                }
            }
            return clearText;
        }

        public static string Decrypt(string cipherText)
        {
            string EncryptionKey = "MAKV2SPBNI99212";
            byte[] cipherBytes = Convert.FromBase64String(cipherText);
            using (Aes encryptor = Aes.Create())
            {
                Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(EncryptionKey, new byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76 });
                encryptor.Key = pdb.GetBytes(32);
                encryptor.IV = pdb.GetBytes(16);
                using (MemoryStream ms = new MemoryStream())
                {
                    using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateDecryptor(), CryptoStreamMode.Write))
                    {
                        cs.Write(cipherBytes, 0, cipherBytes.Length);
                        cs.Close();
                    }
                    cipherText = Encoding.Unicode.GetString(ms.ToArray());
                }
            }
            return cipherText;
        }
    }

**In Controller **

add reference for this encryption class:

using testdemo.Models

public ActionResult Index() {
            return View();
        }
        [HttpPost]
        public ActionResult Index(string text)
        {
            if (Request["txtEncrypt"] != null)
            {
                string getEncryptionCode = Request["txtEncrypt"];
                string DecryptCode = Encryption.Decrypt(HttpUtility.UrlDecode(getEncryptionCode));
                ViewBag.GetDecryptCode = DecryptCode;
                return View();
            }
            else {
                string getDecryptCode = Request["txtDecrypt"];
                string EncryptionCode = HttpUtility.UrlEncode(Encryption.Encrypt(getDecryptCode));
                ViewBag.GetEncryptionCode = EncryptionCode;
                return View();
            }

        }

In View

<h2>Decryption Code</h2>
@using (Html.BeginForm())
{
    <table class="table-bordered table">
        <tr>
            <th>Encryption Code</th>
            <td><input type="text" id="txtEncrypt" name="txtEncrypt" placeholder="Enter Encryption Code" /></td>
        </tr>
        <tr>
            <td colspan="2">
                <span style="color:red">@ViewBag.GetDecryptCode</span>
            </td>
        </tr>
        <tr>
                <td colspan="2">
                    <input type="submit" id="btnEncrypt" name="btnEncrypt"value="Decrypt to Encrypt code" />
                </td>
            </tr>
    </table>
}
    <br />
    <br />
    <br />
    <h2>Encryption Code</h2>
@using (Html.BeginForm())
{
    <table class="table-bordered table">
        <tr>
            <th>Decryption Code</th>
            <td><input type="text" id="txtDecrypt" name="txtDecrypt" placeholder="Enter Decryption Code" /></td>
        </tr>

        <tr>
            <td colspan="2">
                <span style="color:red">@ViewBag.GetEncryptionCode</span>
            </td>
        </tr>
        <tr>
            <td colspan="2">
                <input type="submit" id="btnDecryt" name="btnDecryt" value="Encrypt to Decrypt code" />
            </td>
        </tr>
    </table>
}

My approach to understand zookeeper was, to play around with the CLI client. as described in Getting Started Guide and Command line interface

From this I learned that zookeeper's surface looks very similar to a filesystem and clients can create and delete objects and read or write data.

Example CLI commands

create /myfirstnode mydata
ls /
get /myfirstnode
delete /myfirstnode

Try yourself

How to spin up a zookeper environment within minutes on docker for windows, linux or mac:

One time set up:

docker network create dn

Run server in a terminal window:

docker run --network dn --name zook -d zookeeper
docker logs -f zookeeper

Run client in a second terminal window:

docker run -it --rm --network dn zookeeper zkCli.sh -server zook

See also documentation of image on dockerhub

I recommend php-ffmpeg library.

Extracting image

You can extract a frame at any timecode using the FFMpeg\Media\Video::frame method.

This code returns a FFMpeg\Media\Frame instance corresponding to the second 42. You can pass any FFMpeg\Coordinate\TimeCode as argument, see dedicated documentation below for more information.

$frame = $video->frame(FFMpeg\Coordinate\TimeCode::fromSeconds(42));
$frame->save('image.jpg');

If you want to extract multiple images from the video, you can use the following filter:

$video
    ->filters()
    ->extractMultipleFrames(FFMpeg\Filters\Video\ExtractMultipleFramesFilter::FRAMERATE_EVERY_10SEC, '/path/to/destination/folder/')
    ->synchronize();

$video
    ->save(new FFMpeg\Format\Video\X264(), '/path/to/new/file');

By default, this will save the frames as jpg images.

You are able to override this using setFrameFileType to save the frames in another format:

$frameFileType = 'jpg'; // either 'jpg', 'jpeg' or 'png'
$filter = new ExtractMultipleFramesFilter($frameRate, $destinationFolder);
$filter->setFrameFileType($frameFileType);

$video->addFilter($filter);

For anyone that wants to watch for a change to an object within an array of objects, this seemed to work for me (as the other solutions on this page didn't):

function MyController($scope) {

    $scope.array = [
        data1: {
            name: 'name',
            surname: 'surname'
        },
        data2: {
            name: 'name',
            surname: 'surname'
        },
    ]


    $scope.$watch(function() {
        return $scope.data,
    function(newVal, oldVal){
        console.log(newVal, oldVal);
    }, true);

Best way to find the real cause is to check the MAMP error log in MAMP > logs > mysql_error_log.err

I found the ERROR "Do you already have another mysql server running on port: 3306 ?" - which was actually the cause for my MAMP MYSQL not starting.

Port 3306 was already "busy", so I have changed it to 8306 and that solved my issue.

From the documentation:

list.insert(i, x)
Insert an item at a given position. The first argument is the index of the element before which to insert, so a.insert(0, x) inserts at the front of the list, and a.insert(len(a),x) is equivalent to a.append(x)

http://docs.python.org/2/tutorial/datastructures.html#more-on-lists

Escape sequences (and variables too) work inside double quoted and heredoc strings. So change your code to:

echo '<p>' . $unit1 . "</p>\n";

PS: One clarification, single quotes strings do accept two escape sequences:

• \' when you want to use single quote inside single quoted strings
• \\ when you want to use backslash literally

Angular's own website serves simplified content to search engines: http://docs.angularjs.org/?_escaped_fragment_=/tutorial/step_09

Say your Angular app is consuming a Node.js/Express-driven JSON api, like /api/path/to/resource. Perhaps you could redirect any requests with ?_escaped_fragment_ to /api/path/to/resource.html, and use content negotiation to render an HTML template of the content, rather than return the JSON data.

The only thing is, your Angular routes would need to match 1:1 with your REST API.

EDIT: I'm realizing that this has the potential to really muddy up your REST api and I don't recommend doing it outside of very simple use-cases where it might be a natural fit.

Instead, you can use an entirely different set of routes and controllers for your robot-friendly content. But then you're duplicating all of your AngularJS routes and controllers in Node/Express.

I've settled on generating snapshots with a headless browser, even though I feel that's a little less-than-ideal.

Adding below lines in build.gradle solved my issue .

sourceCompatibility = JavaVersion.VERSION_1_8
targetCompatibility = JavaVersion.VERSION_1_8

Cell spacing and margin is the space between cells.

Cell padding is space inside cells, between the cell border (even if invisible) and the cell content, such as text.

I was facing a similar error because the bucket was in region us-west-2 and the URL pattern had bucketname in the path. Once, I changed the URL pattern to have bucketname as URL subdomain to grab the files and it worked.

For eg previous URL was

https://s3.amazonaws.com/bucketname/filePath/filename

Then I replaced it as

https://bucketname.s3.amazonaws.com/filePath/filename

First create an xpath selector function.

function _x(STR_XPATH) {
    var xresult = document.evaluate(STR_XPATH, document, null, XPathResult.ANY_TYPE, null);
    var xnodes = [];
    var xres;
    while (xres = xresult.iterateNext()) {
        xnodes.push(xres);
    }

    return xnodes;
}

To use the xpath selector with jquery, you can do like this:

$(_x('/html/.//div[@id="text"]')).attr('id', 'modified-text');

Hope this can help.

Your array.xml is not right. change it to like this

Here is array.xml file

<?xml version="1.0" encoding="utf-8"?>  
<resources>  
    <string-array name="testArray">  
        <item>first</item>  
        <item>second</item>  
        <item>third</item>  
        <item>fourth</item>  
        <item>fifth</item>  
   </string-array>
</resources>

Generally speaking, it's the ability to interface a number of different types of object using the same or a superficially similar API. There are various forms:

• Function overloading: defining multiple functions with the same name and different parameter types, such as sqrt(float), sqrt(double) and sqrt(complex). In most languages that allow this, the compiler will automatically select the correct one for the type of argument being passed into it, thus this is compile-time polymorphism.

• Virtual methods in OOP: a method of a class can have various implementations tailored to the specifics of its subclasses; each of these is said to override the implementation given in the base class. Given an object that may be of the base class or any of its subclasses, the correct implementation is selected on the fly, thus this is run-time polymorphism.

• Templates: a feature of some OO languages whereby a function, class, etc. can be parameterised by a type. For example, you can define a generic "list" template class, and then instantiate it as "list of integers", "list of strings", maybe even "list of lists of strings" or the like. Generally, you write the code once for a data structure of arbitrary element type, and the compiler generates versions of it for the various element types.

use the command-line tool SQLCMD which is much leaner on memory. It is as simple as:

SQLCMD -d <database-name> -i filename.sql

You need valid credentials to access your SQL Server instance or even to access a database

Taken from here.

Further to @cw24's answer  •  as of Laravel 5.4 you would instead have the following amendment in public/index.php

try {
    $response = $kernel->handle(
        $request = Illuminate\Http\Request::capture()
    );
} catch(\Exception $e) {
    echo "<pre>";
    echo $e;
    echo "</pre>";
}

And in my case, I had forgotten to fire up MySQL.
Which, by the way, is usually mysql.server start in Terminal

self-explanatory style

import static java.util.Comparator.naturalOrder;
...

    list.stream()
        .map(User::getDate)
        .max(naturalOrder())
        .orElse(null)          // replace with .orElseThrow() is the list cannot be empty

You can use TRUNC on DateTime to remove Time part of the DateTime. So your where clause can be:

AND TRUNC(p1.PA_VALUE) >= TO_DATE('25/10/2012', 'DD/MM/YYYY')

The TRUNCATE (datetime) function returns date with the time portion of the day truncated to the unit specified by the format model.

Here's a working solution that creates admin-user user with a password, additional database (test-database), and test-user in that database.

Dockerfile:

FROM mongo:4.0.3

ENV MONGO_INITDB_ROOT_USERNAME admin-user
ENV MONGO_INITDB_ROOT_PASSWORD admin-password
ENV MONGO_INITDB_DATABASE admin

ADD mongo-init.js /docker-entrypoint-initdb.d/

mongo-init.js:

db.auth('admin-user', 'admin-password')

db = db.getSiblingDB('test-database')

db.createUser({
  user: 'test-user',
  pwd: 'test-password',
  roles: [
    {
      role: 'root',
      db: 'test-database',
    },
  ],
});

The tricky part was to understand that *.js files were run unauthenticated. The solution authenticates the script as the admin-user in the admin database. MONGO_INITDB_DATABASE admin is essential, otherwise the script would be executed against the test db. Check the source code of docker-entrypoint.sh.

Either the parameter supplied for ZIP_CODE is larger (in length) than ZIP_CODEs column width or the parameter supplied for CITY is larger (in length) than CITYs column width.

It would be interesting to know the values supplied for the two ? placeholders.

The root directory of a web application has a special significance and certain content can be present on in that folder. It can have a special file called as “Global.asax”. ASP.Net framework uses the content in the global.asax and creates a class at runtime which is inherited from HttpApplication. During the lifetime of an application, ASP.NET maintains a pool of Global.asax derived HttpApplication instances. When an application receives an http request, the ASP.Net page framework assigns one of these instances to process that request. That instance is responsible for managing the entire lifetime of the request it is assigned to and the instance can only be reused after the request has been completed when it is returned to the pool. The instance members in Global.asax cannot be used for sharing data across requests but static member can be. Global.asax can contain the event handlers of HttpApplication object and some other important methods which would execute at various points in a web application

I would add the following:

• How digital signatures and digital certificates work
• What's sandboxing

Understand how different attack vectors work:

• Buffer overflows/underflows/etc on native code
• Social engineerring
• DNS spoofing
• Man-in-the middle
• CSRF/XSS et al
• SQL injection
• Crypto attacks (ex: exploiting weak crypto algorithms such as DES)
• Program/Framework errors (ex: github's latest security flaw)

You can easily google for all of this. This will give you a good foundation. If you want to see web app vulnerabilities, there's a project called google gruyere that shows you how to exploit a working web app.

try {
    LdapContext ctx = new InitialLdapContext(env, null);
    ctx.setRequestControls(null);
    NamingEnumeration<?> namingEnum = ctx.search("ou=people,dc=example,dc=com", "(objectclass=user)", getSimpleSearchControls());
    while (namingEnum.hasMore ()) {
        SearchResult result = (SearchResult) namingEnum.next ();    
        Attributes attrs = result.getAttributes ();
        System.out.println(attrs.get("cn"));

    } 
    namingEnum.close();
} catch (Exception e) {
    e.printStackTrace();
}

private SearchControls getSimpleSearchControls() {
    SearchControls searchControls = new SearchControls();
    searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);
    searchControls.setTimeLimit(30000);
    //String[] attrIDs = {"objectGUID"};
    //searchControls.setReturningAttributes(attrIDs);
    return searchControls;
}

If you create a new repository from the Github web GUI, you sometimes get the name 'main' instead of 'master'. By using the command git status from your terminal you'd see which location you are. In some cases, you'd see origin/main.

If you are trying to push your app to a cloud service via CLI then use 'main', not 'master'.

example: git push heroku main

This does the job nicely:

def urljoin(*args):
    """
    Joins given arguments into an url. Trailing but not leading slashes are
    stripped for each argument.
    """

    return "/".join(map(lambda x: str(x).rstrip('/'), args))

Introduction

You should use doGet() when you want to intercept on HTTP GET requests. You should use doPost() when you want to intercept on HTTP POST requests. That's all. Do not port the one to the other or vice versa (such as in Netbeans' unfortunate auto-generated processRequest() method). This makes no utter sense.

GET

Usually, HTTP GET requests are idempotent. I.e. you get exactly the same result everytime you execute the request (leaving authorization/authentication and the time-sensitive nature of the page —search results, last news, etc— outside consideration). We can talk about a bookmarkable request. Clicking a link, clicking a bookmark, entering raw URL in browser address bar, etcetera will all fire a HTTP GET request. If a Servlet is listening on the URL in question, then its doGet() method will be called. It's usually used to preprocess a request. I.e. doing some business stuff before presenting the HTML output from a JSP, such as gathering data for display in a table.

@WebServlet("/products")
public class ProductsServlet extends HttpServlet {

    @EJB
    private ProductService productService;

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        List<Product> products = productService.list();
        request.setAttribute("products", products); // Will be available as ${products} in JSP
        request.getRequestDispatcher("/WEB-INF/products.jsp").forward(request, response);
    }

}

Note that the JSP file is explicitly placed in /WEB-INF folder in order to prevent endusers being able to access it directly without invoking the preprocessing servlet (and thus end up getting confused by seeing an empty table).

<table>
    <c:forEach items="${products}" var="product">
        <tr>
            <td>${product.name}</td>
            <td><a href="product?id=${product.id}">detail</a></td>
        </tr>
    </c:forEach>
</table>

Also view/edit detail links as shown in last column above are usually idempotent.

@WebServlet("/product")
public class ProductServlet extends HttpServlet {

    @EJB
    private ProductService productService;

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        Product product = productService.find(request.getParameter("id"));
        request.setAttribute("product", product); // Will be available as ${product} in JSP
        request.getRequestDispatcher("/WEB-INF/product.jsp").forward(request, response);
    }

}

<dl>
    <dt>ID</dt>
    <dd>${product.id}</dd>
    <dt>Name</dt>
    <dd>${product.name}</dd>
    <dt>Description</dt>
    <dd>${product.description}</dd>
    <dt>Price</dt>
    <dd>${product.price}</dd>
    <dt>Image</dt>
    <dd><img src="productImage?id=${product.id}" /></dd>
</dl>

POST

HTTP POST requests are not idempotent. If the enduser has submitted a POST form on an URL beforehand, which hasn't performed a redirect, then the URL is not necessarily bookmarkable. The submitted form data is not reflected in the URL. Copypasting the URL into a new browser window/tab may not necessarily yield exactly the same result as after the form submit. Such an URL is then not bookmarkable. If a Servlet is listening on the URL in question, then its doPost() will be called. It's usually used to postprocess a request. I.e. gathering data from a submitted HTML form and doing some business stuff with it (conversion, validation, saving in DB, etcetera). Finally usually the result is presented as HTML from the forwarded JSP page.

<form action="login" method="post">
    <input type="text" name="username">
    <input type="password" name="password">
    <input type="submit" value="login">
    <span class="error">${error}</span>
</form>

...which can be used in combination with this piece of Servlet:

@WebServlet("/login")
public class LoginServlet extends HttpServlet {

    @EJB
    private UserService userService;

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String username = request.getParameter("username");
        String password = request.getParameter("password");
        User user = userService.find(username, password);

        if (user != null) {
            request.getSession().setAttribute("user", user);
            response.sendRedirect("home");
        }
        else {
            request.setAttribute("error", "Unknown user, please try again");
            request.getRequestDispatcher("/login.jsp").forward(request, response);
        }
    }

}

You see, if the User is found in DB (i.e. username and password are valid), then the User will be put in session scope (i.e. "logged in") and the servlet will redirect to some main page (this example goes to http://example.com/contextname/home), else it will set an error message and forward the request back to the same JSP page so that the message get displayed by ${error}.

You can if necessary also "hide" the login.jsp in /WEB-INF/login.jsp so that the users can only access it by the servlet. This keeps the URL clean http://example.com/contextname/login. All you need to do is to add a doGet() to the servlet like this:

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    request.getRequestDispatcher("/WEB-INF/login.jsp").forward(request, response);
}

(and update the same line in doPost() accordingly)

That said, I am not sure if it is just playing around and shooting in the dark, but the code which you posted doesn't look good (such as using compareTo() instead of equals() and digging in the parameternames instead of just using getParameter() and the id and password seems to be declared as servlet instance variables — which is NOT threadsafe). So I would strongly recommend to learn a bit more about basic Java SE API using the Oracle tutorials (check the chapter "Trails Covering the Basics") and how to use JSP/Servlets the right way using those tutorials.

See also:

• Our servlets wiki page
• Java EE web development, where do I start and what skills do I need?
• Servlet returns "HTTP Status 404 The requested resource (/servlet) is not available"
• Show JDBC ResultSet in HTML in JSP page using MVC and DAO pattern

Update: as per the update of your question (which is pretty major, you should not remove parts of your original question, this would make the answers worthless .. rather add the information in a new block) , it turns out that you're unnecessarily setting form's encoding type to multipart/form-data. This will send the request parameters in a different composition than the (default) application/x-www-form-urlencoded which sends the request parameters as a query string (e.g. name1=value1&name2=value2&name3=value3). You only need multipart/form-data whenever you have a <input type="file"> element in the form to upload files which may be non-character data (binary data). This is not the case in your case, so just remove it and it will work as expected. If you ever need to upload files, then you'll have to set the encoding type so and parse the request body yourself. Usually you use the Apache Commons FileUpload there for, but if you're already on fresh new Servlet 3.0 API, then you can just use builtin facilities starting with HttpServletRequest#getPart(). See also this answer for a concrete example: How to upload files to server using JSP/Servlet?

var save_val = $("form").serializeArray();
$(save_val).each(function( index, element ) {
    alert(element.name);
    alert(element.val);
});

Is not necesary to create the function only the @result part. For example:

Select Name,
(SELECT CASE WHEN 
DATEPART(DAY, '2016-08-28') > DATEPART(DAY, '2016-09-29')   
THEN DATEDIFF(MONTH, '2016-08-28',  '2016-09-29') - 1
ELSE DATEDIFF(MONTH, '2016-08-28',  '2016-09-29') END) as NumberOfMonths

FROM 
tableExample;

I always use the time-stamp - so its not possible, that the file exists already:

import os
import shutil
import datetime

now = str(datetime.datetime.now())[:19]
now = now.replace(":","_")

src_dir="C:\\Users\\Asus\\Desktop\\Versand Verwaltung\\Versand.xlsx"
dst_dir="C:\\Users\\Asus\\Desktop\\Versand Verwaltung\\Versand_"+str(now)+".xlsx"
shutil.copy(src_dir,dst_dir)

I know - sort of late. But I was working at the same problem. If a client buys a month of service, he/she expects to end it a month later. Here's how I solved it:

    $now = time(); 
    $day = date('j',$now);
    $year = date('o',$now);
    $month = date('n',$now);
    $hour = date('G');
    $minute = date('i');
    $month += $count;
    if ($month > 12)        {
            $month -= 12;
            $year++; 
            }
    $work = strtotime($year . "-" . $month . "-01");
    $avail = date('t',$work);
    if ($day > $avail)
            $day = $avail;
    $stamp = strtotime($year . "-" . $month . "-" . $day . " " . $hour . ":" . $minute);

This will calculate the exact day n*count months from now (where count <= 12). If the service started March 31, 2019 and runs for 11 months, it will end on Feb 29, 2020. If it runs for just one month, the end date is Apr 30, 2019.

You will not be able to find out the password he chose. However, you may create a new user or set a new password to the existing user.

Usually, you can login as the postgres user:

Open a Terminal and do sudo su postgres. Now, after entering your admin password, you are able to launch psql and do

CREATE USER yourname WITH SUPERUSER PASSWORD 'yourpassword';

This creates a new admin user. If you want to list the existing users, you could also do

\du

to list all users and then

ALTER USER yourusername WITH PASSWORD 'yournewpass';

You can also fix this issue using @Service annotation on service class and passing the required bean classA as a parameter to the other beans classB constructor and annotate the constructor of classB with @Autowired. Sample snippet here :

@Service
public class ClassB {

    private ClassA classA;

    @Autowired
    public ClassB(ClassA classA) {
        this.classA = classA;
    }

    public void useClassAObjectHere(){
        classA.callMethodOnObjectA();
    }
}

Here's how I do it. This will set the PHP default timezone to the user's local timezone. Just paste the following on the top of all your pages:

<?php
session_start();

if(!isset($_SESSION['timezone']))
{
    if(!isset($_REQUEST['offset']))
    {
    ?>
        <script>
        var d = new Date()
        var offset= -d.getTimezoneOffset()/60;
        location.href = "<?php echo $_SERVER['PHP_SELF']; ?>?offset="+offset;
        </script>
        <?php   
    }
    else
    {
        $zonelist = array('Kwajalein' => -12.00, 'Pacific/Midway' => -11.00, 'Pacific/Honolulu' => -10.00, 'America/Anchorage' => -9.00, 'America/Los_Angeles' => -8.00, 'America/Denver' => -7.00, 'America/Tegucigalpa' => -6.00, 'America/New_York' => -5.00, 'America/Caracas' => -4.30, 'America/Halifax' => -4.00, 'America/St_Johns' => -3.30, 'America/Argentina/Buenos_Aires' => -3.00, 'America/Sao_Paulo' => -3.00, 'Atlantic/South_Georgia' => -2.00, 'Atlantic/Azores' => -1.00, 'Europe/Dublin' => 0, 'Europe/Belgrade' => 1.00, 'Europe/Minsk' => 2.00, 'Asia/Kuwait' => 3.00, 'Asia/Tehran' => 3.30, 'Asia/Muscat' => 4.00, 'Asia/Yekaterinburg' => 5.00, 'Asia/Kolkata' => 5.30, 'Asia/Katmandu' => 5.45, 'Asia/Dhaka' => 6.00, 'Asia/Rangoon' => 6.30, 'Asia/Krasnoyarsk' => 7.00, 'Asia/Brunei' => 8.00, 'Asia/Seoul' => 9.00, 'Australia/Darwin' => 9.30, 'Australia/Canberra' => 10.00, 'Asia/Magadan' => 11.00, 'Pacific/Fiji' => 12.00, 'Pacific/Tongatapu' => 13.00);
        $index = array_keys($zonelist, $_REQUEST['offset']);
        $_SESSION['timezone'] = $index[0];
    }
}

date_default_timezone_set($_SESSION['timezone']);

//rest of your code goes here
?>

Try filter: blur(0);

It worked for me

I have edited Raj Joshi's version to allow one dot or one comma:

func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {

    let inverseSet = CharacterSet(charactersIn:"0123456789").inverted
    let components = string.components(separatedBy: inverseSet)
    let filtered = components.joined(separator: "")

    if filtered == string {
        return true
    } else {
        if string == "." || string == "," {
            let countDots = textField.text!.components(separatedBy:".").count - 1
            let countCommas = textField.text!.components(separatedBy:",").count - 1

            if countDots == 0 && countCommas == 0 {
                return true
            } else {
                return false
            }
        } else  {
            return false
        }
    }
}

Just separate it with different quotes:

<input name="myName[1][data]" value="myValue">

JQuery:

var value = $('input[name="myName[1][data]"]').val();

Don't forget to take into consideration the global flag in your regexp :

var reg = /abc/g;
!!'abcdefghi'.match(reg); // => true
!!'abcdefghi'.match(reg); // => true
reg.test('abcdefghi');    // => true
reg.test('abcdefghi');    // => false <=

This is because Regexp keeps track of the lastIndex when a new match is found.

In React Native , This worked for me

name = "hi \n\ruser"
name.replace( /[\r\n]+/gm, ""); // hi user

This XPath is specific to the code snippet you've provided. To select <child> with id as #grand you can write //child[@id='#grand'].

To get age //child[@id='#grand']/@age

Hope this helps

Running eclipse and also running Maven will require you to store two path variables, one in your jdk1.7_x_x_x location and also in your jdk1.7_x_x_\bin. If you are using Windows, when you are in your environment variables, do the following:

1) create a USER variable called JAVA_HOME. Point this to the location of your JAVA file. For example: "C:\Program Files\Java\jdk1.7.0_51" (remove the quotes)

2) under the PATH, append %JAVA_HOME% to the PATH. This will add the file location from step 1 to your PATH. This is good for MAVEN

3) if you are using eclipse you need to have the path point to "C:\Program Files\Java\jdk1.7.0_51\bin". Now append %JAVA_HOME%\bin to the end of your path.

4) your path should look something like this: C:\Program Files (x86)\Google\google_appengine\;C:\Users\username\AppData\Roaming\npm;%M2%;%JAVA_HOME%;%JAVA_HOME%\bin

Notes: the items that are enclosed in %'s like %M2% are assigned variables. It looks redundant but necessary. You can confirm that everything works by typing in:

java -version
javac -version
mvn -version

Each of those three statements typed in comman prompt should not return errors.

It's not possible right now, on Netbeans 7.0.1 . The GUI tool to create columns on a tables is very limited and does not exist a plugin that offer that feature.

This will create you the result in lightning fast.

select top 100000  identity (int ,1,1) as Sequence into Tally from sysobjects , sys.all_columns


select dateadd(dd,sequence,-1) Dates into CalenderTable from tally


delete from CalenderTable where dates < -- mention the mindate you need
delete from CalenderTable where dates >  -- mention the max date you need

Step 1 : Create a sequence table

Step 2 : Use the sequence table to generate the desired dates

Step 3 : Delete unwanted dates

From the docs ...

A string containing "\r\n" for non-Unix platforms, or a string containing "\n" for Unix platforms.

Detecting and embedding Flash within a web document is a surprisingly difficult task.

I was very disappointed with the quality and non-standards compliant markup generated from both SWFObject and Adobe's solutions. Additionally, my testing found Adobe's auto updater to be inconsistent and unreliable.

The JavaScript Flash Detection Library (Flash Detect) and JavaScript Flash HTML Generator Library (Flash TML) are a legible, maintainable and standards compliant markup solution.

-"Luke read the source!"

I wrote this javascript script and included it in the header (before anything loads). It seems to work. If the page was loaded more than one hour ago or the situation is undefined it will reload everything from server. The time of one hour = 3600000 milliseconds can be changed in the following line: if(alter > 3600000)

With regards, Birke

<script type="text/javascript">
//<![CDATA[
function zeit()
{
    if(document.cookie)
    {
        a = document.cookie;
        cookiewert = "";
        while(a.length > 0)
        {
            cookiename = a.substring(0,a.indexOf('='));
            if(cookiename == "zeitstempel")
            {
                cookiewert = a.substring(a.indexOf('=')+1,a.indexOf(';'));
                break;
            }
            a = a.substring(a.indexOf(cookiewert)+cookiewert.length+1,a.length);
        }
        if(cookiewert.length > 0)
        {
            alter = new Date().getTime() - cookiewert;

            if(alter > 3600000)
            {   
                document.cookie = "zeitstempel=" + new Date().getTime() + ";";
                location.reload(true);
            }
            else
            {
                return;
            }
        }
        else
        {
            document.cookie = "zeitstempel=" + new Date().getTime() + ";";
            location.reload(true);
        }
    }
    else
    {
        document.cookie = "zeitstempel=" + new Date().getTime() + ";";
        location.reload(true);
    }
}
zeit();
//]]>
</script>

As of jQuery 1.4.1, the hover event works with live(). It basically just binds to the mouseenter and mouseleave events, which you can do with versions prior to 1.4.1 just as well:

$("table tr")
    .mouseenter(function() {
        // Hover starts
    })
    .mouseleave(function() {
        // Hover ends
    });

This requires two binds but works just as well.

I had the same issue. My problem was that my header type wasn't set properly.

I just added this before my json echo

header('Content-type: application/json');