I had a similar problem when using Angular, here is the solution that I've found.

Step 1. Get all the object keys. using Object.keys. This method returns an array of a given object’s own enumerable properties.

Step 2. Create an empty array. This is an where all the properties are going to live, since your new ngFor loop is going to point to this array, we gotta catch them all. Step 3. Iterate throw all keys, and push each one into the array you created. Here’s how that looks like in code.

    // Evil response in a variable. Here are all my vehicles.
let evilResponse = { 
  "car" : 
    { 
       "color" : "red",
       "model" : "2013"
    },
   "motorcycle": 
    { 
       "color" : "red",
       "model" : "2016"
    },
   "bicycle": 
    { 
       "color" : "red",
       "model" : "2011"
    }
}
// Step 1. Get all the object keys.
let evilResponseProps = Object.keys(evilResponse);
// Step 2. Create an empty array.
let goodResponse = [];
// Step 3. Iterate throw all keys.
for (prop of evilResponseProps) { 
    goodResponse.push(evilResponseProps[prop]);
}

Here is a link to the original post. https://medium.com/@papaponmx/looping-over-object-properties-with-ngfor-in-angular-869cd7b2ddcc

In my case, with the same error exception, i put the "onBackPressed()" in a runnable (you can use any of your view):

myView.post(new Runnable() {
                    @Override
                    public void run() {
                        onBackPressed()
                    }
                });

I do not understand why, but it works!

df['First Season'].loc[(df['First Season'] > 1990)] = 1

strange that nobody has this answer, the only missing part of your code is the ['First Season'] right after df and just remove your curly brackets inside.

This is not possible (as @JaredPar already mentioned). Trying to put logic to work around this is a bad practice. In case you have a base class that have an enum, you should list of all possible enum-values there, and the implementation of class should work with the values that it knows.

E.g. Supposed you have a base class BaseCatalog, and it has an enum ProductFormats (Digital, Physical). Then you can have a MusicCatalog or BookCatalog that could contains both Digital and Physical products, But if the class is ClothingCatalog, it should only contains Physical products.

    using System;
    using System.IO.Ports;
    using System.Threading;

    namespace SerialReadTest
    {
        class SerialRead
        {
            static void Main(string[] args)
            {
        Console.WriteLine("Serial read init");
        SerialPort port = new SerialPort("COM6", 115200, Parity.None, 8, StopBits.One);
        port.Open();
        while(true){
          Console.WriteLine(port.ReadLine());
        }

    }
}
}

This is a practical and easy read piece I believe.

        if (res.next()) {
            do {

                // successfully in. do the right things.

            } while (res.next());
        } else {
           // no results back. warn the user.
        }

this ended up working for me:

   gpg -a --export-secret-keys > exportedKeyFilename.asc 

you can name keyfilename.asc by any name as long as you keep on the .asc extension.
this command copies all secret-keys on a user's computer to keyfilename.asc in the working directory of where the command was called.

To Export just 1 specific secret key instead of all of them:

   gpg -a --export-secret-keys keyIDNumber > exportedKeyFilename.asc

keyIDNumber is the number of the key id for the desired key you are trying to export.

As far as I know its not possible with javascript.

What you can do for every result create a screenshot, save it somewhere and point the user when clicked on save result. (I guess no of result is only 10 so not a big deal to create 10 jpeg image of results)

Add following lines to your .vimrc

set expandtab
set tabstop=4
set shiftwidth=4
map <F2> :retab <CR> :wq! <CR>

Open a file in vim and press F2 The tabs will be converted to 4 spaces and file will be saved automatically.

Since Stack Overflow’s broken RSS just resurrected this question for me, here’s my almost-general solution: JAValueToString

This lets you write JA_DUMP(cgPoint) and get cgPoint = {0, 0} logged.

I am not sure it will help but you can try this.This worked for me

Start -> Visual Studio Installer -> Repair

after this enable the Microsoft Symbols Server under

TOOLS->Options->Debugging->Symbols

This will automatically set all the issues.

You can refer this link as well

https://social.msdn.microsoft.com/Forums/vstudio/en-US/6aa917e5-a51c-4399-9712-4b9c5d65fabf/ucrtbasedpdb-not-loaded-using-visual-studio?forum=visualstudiogeneral

Trying to JOIN in MongoDB would defeat the purpose of using MongoDB. You could, however, use a DBref and write your application-level code (or library) so that it automatically fetches these references for you.

Or you could alter your schema and use embedded documents.

Your final choice is to leave things exactly the way they are now and do two queries.

Add the image to Your project by clicking File -> "Add Files to ...".

Then choose the image in ImageView properties (Utilities -> Attributes Inspector).

Use a progress bar with the style set to Marquee. This represents an indeterminate progress bar.

myProgressBar.Style = ProgressBarStyle.Marquee;

You can also use the MarqueeAnimationSpeed property to set how long it will take the little block of color to animate across your progress bar.

Here is my solution for mac users I think it work for window also:

First go to your Android Studio toolbar

Build > Make Project (while you guys are online let it to download the files) and then

Build > Compile Module "your app name is shown here" (still online let the files are
download and finish) and then

Run your app that is done it will launch your emulator and configure it then run it!

That is it!!! Happy Coding guys!!!!!!!

In Android Studio 4.0 please change Launch to Nothing:

Run/Debug Configuration -> Android App -> app -> General -> Launch Options -> Launch : Nothing

I found a solution that works on jQuery 3.4.1 slim

After un-minifying, add {passive: true} to the addEventListener function on line 1567 like so:

t.addEventListener(p, a, {passive: true}))

Nothing breaks and lighthouse audits don't complain about the listeners.

To add some clarification here, when you create your service, the service class uses the default 'wsdlLocation', which was inserted into it when the class was built from the wsdl. So if you have a service class called SomeService, and you create an instance like this:

SomeService someService = new SomeService();

If you look inside SomeService, you will see that the constructor looks like this:

public SomeService() {
        super(__getWsdlLocation(), SOMESERVICE_QNAME);
}

So if you want it to point to another URL, you just use the constructor that takes a URL argument (there are 6 constructors for setting qname and features as well). For example, if you have set up a local TCP/IP monitor that is listening on port 9999, and you want to redirect to that URL:

URL newWsdlLocation = new URL("http://theServerName:9999/somePath");
SomeService someService = new SomeService(newWsdlLocation);

and that will call this constructor inside the service:

public SomeService(URL wsdlLocation) {
    super(wsdlLocation, SOMESERVICE_QNAME);
}

This has changed, it's now fb://profile/(profileID)

The compiler is telling you that there are problems starting at line 122 in the middle of that strange FBI-CIA warning message. That message is not valid C++ code and is NOT commented out so of course it will cause compiler errors. Try removing that entire message.

Also, I agree with In silico: you should always tell us what you tried and exactly what error messages you got.

I think your date comes from php and is written to html (dom) or? I have a php-function to prep all dates and timestamps. This return a formation that is be needed.

$timeForJS = timeop($datetimeFromDatabase['payedon'], 'js', 'local'); // save 10/12/2016 09:20 on var

this format can be used on js to create new Date...

<html>
   <span id="test" data-date="<?php echo $timeForJS; ?>"></span>
   <script>var myDate = new Date( $('#test').attr('data-date') );</script>
</html>

What i will say is, make your a own function to wrap, that make your life easyr. You can us my func as sample but is included in my cms you can not 1 to 1 copy and paste :)

    function timeop($utcTime, $for, $tz_output = 'system')
{
    // echo "<br>Current time ( UTC ): ".$wwm->timeop('now', 'db', 'system');
    // echo "<br>Current time (USER): ".$wwm->timeop('now', 'db', 'local');
    // echo "<br>Current time (USER): ".$wwm->timeop('now', 'D d M Y H:i:s', 'local');
    // echo "<br>Current time with user lang (USER): ".$wwm->timeop('now', 'datetimes', 'local');

    // echo '<br><br>Calculator test is users timezone difference != 0! Tested with "2014-06-27 07:46:09"<br>';
    // echo "<br>Old time (USER -> UTC): ".$wwm->timeop('2014-06-27 07:46:09', 'db', 'system');
    // echo "<br>Old time (UTC -> USER): ".$wwm->timeop('2014-06-27 07:46:09', 'db', 'local');

    /** -- */
    // echo '<br><br>a Time from db if same with user time?<br>';
    // echo "<br>db-time (2019-06-27 07:46:09) time left = ".$wwm->timeleft('2019-06-27 07:46:09', 'max');
    // echo "<br>db-time (2014-06-27 07:46:09) time left = ".$wwm->timeleft('2014-06-27 07:46:09', 'max', 'txt');

    /** -- */
    // echo '<br><br>Calculator test with other formats<br>';
    // echo "<br>2014/06/27 07:46:09: ".$wwm->ntimeop('2014/06/27 07:46:09', 'db', 'system');

    switch($tz_output){
        case 'system':
            $tz = 'UTC';
            break;

        case 'local':
            $tz = $_SESSION['wwm']['sett']['tz'];
            break;

        default:
            $tz = $tz_output;
            break;
    }

    $date = new DateTime($utcTime,  new DateTimeZone($tz));

    if( $tz != 'UTC' ) // Only time converted into different time zone
    {
        // now check at first the difference in seconds
        $offset = $this->tz_offset($tz);
        if( $offset != 0 ){
            $calc = ( $offset >= 0  ) ? 'add' : 'sub';
            // $calc = ( ($_SESSION['wwm']['sett']['tzdiff'] >= 0 AND $tz_output == 'user') OR ($_SESSION['wwm']['sett']['tzdiff'] <= 0 AND $tz_output == 'local') ) ? 'sub' : 'add';
            $offset = ['math' => $calc, 'diff' => abs($offset)];
            $date->$offset['math']( new DateInterval('PT'.$offset['diff'].'S') ); // php >= 5.3 use add() or sub()
        }
    }

    // create a individual output
    switch( $for ){
        case 'js':
            $format = 'm/d/Y H:i'; // Timepicker use only this format m/d/Y H:i without seconds // Sett automatical seconds default to 00
            break;
        case 'js:s':
            $format = 'm/d/Y H:i:s'; // Timepicker use only this format m/d/Y H:i:s with Seconds
            break;
        case 'db':
            $format = 'Y-m-d H:i:s'; // Database use only this format Y-m-d H:i:s
            break;
        case 'date':
        case 'datetime':
        case 'datetimes':
            $format = wwmSystem::$languages[$_SESSION['wwm']['sett']['isolang']][$for.'_format']; // language spezific output
            break;
        default:
            $format = $for;
            break;
    }

    $output = $date->format( $format );

    /** Replacement
     * 
     * D = day short name
     * l = day long name
     * F = month long name
     * M = month short name
     */
    $output = str_replace([
        $date->format('D'),
        $date->format('l'),
        $date->format('F'),
        $date->format('M')
    ],[
        $this->trans('date', $date->format('D')),
        $this->trans('date', $date->format('l')),
        $this->trans('date', $date->format('F')),
        $this->trans('date', $date->format('M'))
    ], $output);

    return $output; // $output->getTimestamp();
}

I assume you are executing all of the above code each time you write something to the file. Each time the stream for the file is opened, its seek pointer is positioned at the beginning so all writes end up overwriting what was there before.

You can solve the problem in two ways: either with the convenient

file2 = new StreamWriter("c:/file.txt", true);

or by explicitly repositioning the stream pointer yourself:

file2 = new StreamWriter("c:/file.txt");
file2.BaseStream.Seek(0, SeekOrigin.End);

I use this one-liner, broken into several lines for readability:

adb devices |
 perl -nle 'print $1 if /emulator-(\d+).device$/' |
 xargs -t -l1 -i bash -c "
   ( echo auth $(cat $HOME/.emulator_console_auth_token) ;
     echo kill ;
     yes ) |
   telnet localhost {}"

In Angular 8, ViewChild always takes 2 param, and second params always has static: true or static: false

You can try like this:

@ViewChild('nameInput', {static: false}) component

Also,the static: false is going to be the default fallback behaviour in Angular 9.

What are static false/true: So as a rule of thumb you can go for the following:

• { static: true } needs to be set when you want to access the ViewChild in ngOnInit.

  { static: false } can only be accessed in ngAfterViewInit. This is also what you want to go for when you have a structural directive (i.e. *ngIf) on your element in your template.

Since jQuery 3.3.0, it is possible to pass arrays to .addClass(), .removeClass() and toggleClass(), which makes it easier if there is any logic which determines which classes should be added or removed, as you don't need to mess around with the space-delimited strings.

$("div").removeClass(["class1", "class2"]); 

You could always use "%p" in order to display 8 bit hex numbers.

int main (void)
{
    uint8_t a;
    uint32_t b;
    a=15;
    b=a<<28;
    printf("%p", b);
    return 0;
}

Output:

0xf0000000

None of the answers to date mention the effect of the innodb_page_size parameter. Possibly because changing this parameter was not a supported operation prior to MySQL 5.7.6. From the documentation:

The maximum row length, except for variable-length columns (VARBINARY, VARCHAR, BLOB and TEXT), is slightly less than half of a database page for 4KB, 8KB, 16KB, and 32KB page sizes. For example, the maximum row length for the default innodb_page_size of 16KB is about 8000 bytes. For an InnoDB page size of 64KB, the maximum row length is about 16000 bytes. LONGBLOB and LONGTEXT columns must be less than 4GB, and the total row length, including BLOB and TEXT columns, must be less than 4GB.

Note that increasing the page size is not without its drawbacks. Again from the documentation:

As of MySQL 5.7.6, 32KB and 64KB page sizes are supported but ROW_FORMAT=COMPRESSED is still unsupported for page sizes greater than 16KB. For both 32KB and 64KB page sizes, the maximum record size is 16KB. For innodb_page_size=32k, extent size is 2MB. For innodb_page_size=64k, extent size is 4MB.

A MySQL instance using a particular InnoDB page size cannot use data files or log files from an instance that uses a different page size. This limitation could affect restore or downgrade operations using data from MySQL 5.6, which does support page sizes other than 16KB.

you can use decoration like this :

   Container(
                    width: 60,
                    height: 60,
                    child: Icon(CustomIcons.option, size: 20,),
                    decoration: BoxDecoration(
                        shape: BoxShape.circle,
                        color: Color(0xFFe0f2f1)),
                  )

Now you have circle shape and Icon on it.

try this

$.getJSON(url, function(data){
    $.each(data.response.venue.tips.groups.items, function (index, value) {
        console.log(this.text);
    });
});

In addition to XML::XSH and XML::XSH2 there are some grep-like utilities suck as App::xml_grep2 and XML::Twig (which includes xml_grep rather than xml_grep2). These can be quite useful when working on a large or numerous XML files for quick oneliners or Makefile targets. XML::Twig is especially nice to work with for a perl scripting approach when you want to a a bit more processing than your $SHELL and xmllint xstlproc offer.

The numbering scheme in the application names indicates that the "2" versions are newer/later version of essentially the same tool which may require later versions of other modules (or of perl itself).

I prefer to use ToString() and IFormatProvider.

double value = 100000.3
Console.WriteLine(value.ToString("0,0.00", new CultureInfo("en-US", false)));

Output: 10,000.30

First of all, this line

<img src="http://soulsnatcher.bplaced.net/LDRYh.jpg" alt="unfinished bingo card" />.click()

You're mixing HTML and JavaScript. It doesn't work like that. Get rid of the .click() there.

If you read the JavaScript you've got there, document.getElementById('foo') it's looking for an HTML element with an ID of foo. You don't have one. Give your image that ID:

<img id="foo" src="http://soulsnatcher.bplaced.net/LDRYh.jpg" alt="unfinished bingo card" />

Alternatively, you could throw the JS in a function and put an onclick in your HTML:

<img src="http://soulsnatcher.bplaced.net/LDRYh.jpg" alt="unfinished bingo card" onclick="myfunction()" />

I suggest you do some reading up on JavaScript and HTML though.

The others are right about needing to move the <img> above the JS click binding too.

Here is part of a line in my code that brought the warning up in NetBeans:

$page = (!empty($_GET['p'])) 

After much research and seeing how there are about a bazillion ways to filter this array, I found one that was simple. And my code works and NetBeans is happy:

$p = filter_input(INPUT_GET, 'p');
$page = (!empty($p))

You could consider using an external tool like ffmpeg to merge the images into a movie (see answer here) or you could try to use OpenCv to combine the images into a movie like the example here.

I'm attaching below a code snipped I used to combine all png files from a folder called "images" into a video.

import cv2
import os

image_folder = 'images'
video_name = 'video.avi'

images = [img for img in os.listdir(image_folder) if img.endswith(".png")]
frame = cv2.imread(os.path.join(image_folder, images[0]))
height, width, layers = frame.shape

video = cv2.VideoWriter(video_name, 0, 1, (width,height))

for image in images:
    video.write(cv2.imread(os.path.join(image_folder, image)))

cv2.destroyAllWindows()
video.release()

In our case, the Windows service account that SQL Server and SQL Agent were running under were locked out in Active Directory.

Sublime Text 3

Procedure

Run Sublime Text.

Select Preferences ? Package Control.

Or

Use ctrl+shift+p shortcut for (Win, Linux) or cmd+shift+p for (OS X).

Select Remove Package. Package Control: Remove Package

Start typing name of the package you want to remove and select it from the list of installed packages.

Wait for the uninstallation to complete.

You can also set the GPU in the command line so that you don't need to hard-code the device into your script (which may fail on systems without multiple GPUs). Say you want to run your script on GPU number 5, you can type the following on the command line and it will run your script just this once on GPU#5:

CUDA_VISIBLE_DEVICES=5, python test_script.py

CSS Cursor:Pointer; is a great solution. FastClick https://github.com/ftlabs/fastclick is another solution which doesn't require you to change css if you didn't want Cursor:Pointer; on an element for some reason. I use fastclick now anyway to eliminate the 300ms delay on iOS devices.

=========================

Here's an article with your full list of options: https://tobiasahlin.com/blog/flexbox-break-to-new-row/

EDIT: This is really easy to do with Grid now: https://codepen.io/anon/pen/mGONxv?editors=1100

=========================

I don't think you can break after a specific item. The best you can probably do is change the flex-basis at your breakpoints. So:

ul {
  flex-flow: row wrap;
  display: flex;
}

li {
  flex-grow: 1;
  flex-shrink: 0;
  flex-basis: 50%;
}

@media (min-width: 40em;){
li {
  flex-basis: 30%;
}

Here's a sample: http://cdpn.io/ndCzD

============================================

EDIT: You CAN break after a specific element! Heydon Pickering unleashed some css wizardry in an A List Apart article: http://alistapart.com/article/quantity-queries-for-css

EDIT 2: Please have a look at this answer: Line break in multi-line flexbox

@luksak also provides a great answer

You can use sys.argv to get the arguments as a list.

If you need to access individual elements, you can use

sys.argv[i]  

where i is index, 0 will give you the python filename being executed. Any index after that are the arguments passed.

Adding a -g to the end of my install fixed this for me. ex: npm install uglify-js -g

setTag(position) while adding marker to map.

Marker marker =  map.addMarker(new MarkerOptions()
                .position(new LatLng(latitude, longitude)));
marker.setTag(position);

getTag() on setOnMarkerClickListener listener

map.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
                @Override
                public boolean onMarkerClick(Marker marker) {
                    int position = (int)(marker.getTag());
                   //Using position get Value from arraylist 
                    return false;
                }
            });

DateTime to UNIX timestamp:

public static double DateTimeToUnixTimestamp(DateTime dateTime)
{
    return (TimeZoneInfo.ConvertTimeToUtc(dateTime) - 
           new DateTime(1970, 1, 1, 0, 0, 0, 0, System.DateTimeKind.Utc)).TotalSeconds;
}

If you don't have idea about What could be the response from the API. Follow the steps to convert the responsebody response value into bytes and print in the String format You can get the entire response printed in the console.

Then you can convert string to JSONObject easily.

      apiService.getFeeds(headerMap, map).enqueue(object : Callback, retrofit2.Callback<ResponseBody> {
            override fun onFailure(call: Call<ResponseBody>?, t: Throwable?) {
            }

            override fun onResponse(call: Call<ResponseBody>?, response: Response<ResponseBody>?) {
                val bytes = (response!!.body()!!.bytes())
                Log.d("Retrofit Success : ", ""+ String(bytes))
            }
        })

Timestamp is a Date: https://docs.oracle.com/javase/7/docs/api/java/sql/Timestamp.html

java.lang.Object
    java.util.Date
        java.sql.Timestamp

It should be legal to put a semicolon directly before the WITH keyword.

You can add a source folder to the build script and then sync. Look for sourceSets in the documentation here: http://tools.android.com/tech-docs/new-build-system/user-guide#TOC-Basic-Project

I haven't found a good way of adding test source folders. I have manually added the source to the .iml file. Of course this means it will go away everytime the build script is synched.

One can also use a lambda function.

auto Compare = [](Node &a, Node &b) { //compare };
std::priority_queue<Node, std::vector<Node>, decltype(Compare)> openset(Compare);

Instead of images i choose background option:

HTML:

  <div class="class1">
   <p>Some paragraph, Some paragraph, Some paragraph, Some paragraph, Some paragraph, 
   </p>
  </div>    
  <div class="class2">
   <p>Some paragraph, Some paragraph, Some paragraph, Some paragraph, Some paragraph, 
   </p>
  </div>
  <div class="class3">
   <p>Some paragraph, Some paragraph, Some paragraph, Some paragraph, Some paragraph, 
   </p>
  </div>        

CSS:

  .class1 {

    background: url("Some.png") no-repeat top center;
    text-align: center;

   }

  .class2 {

    background: url("Some2.png") no-repeat top center;
    text-align: center;

   }

  .class3 {

    background: url("Some3.png") no-repeat top center;
    text-align: center;

   }

From Apache Commons library:

import org.apache.commons.lang3.StringUtils

Use:

StringUtils.join(slist, ',');

Another similar question and answer here

There are arguments for both, but most of them stem from certain user requirements "what if you need to add logic for", or "xxxx breaks encapsulation". However, nobody has really commented on the theory, and given a properly reasoned argument.

What is Hibernate/JPA actually doing when it persists an object - well, it is persisting the STATE of the object. That means storing it in a way that it can be easily reproduced.

What is encapsulation? Encapsulations means encapsulating the data (or state) with an interface that the application/client can use to access the data safely - keeping it consistent and valid.

Think of this like MS Word. MS Word maintains a model of the document in memory - the documents STATE. It presents an interface that the user can use to modify the document - a set of buttons, tools, keyboard commands etc. However, when you choose to persist (Save) that document, it saves the internal state, not the set of keypresses and mouse clicks used to generate it.

Saving the internal state of the object DOES NOT break encapsulation - otherwise you don't really understand what encapsulation means, and why it exists. It is just like object serialisation really.

For this reason, IN MOST CASES, it is appropriate to persist the FIELDS and not the ACCESSORS. This means that an object can be accurately recreated from the database exactly the way it was stored. It should not need any validation, because this was done on the original when it was created, and before it was stored in the database (unless, God forbid, you are storing invalid data in the DB!!!!). Likewise, there should be no need to calculate values, as they were already calculated before the object was stored. The object should look just the way it did before it was saved. In fact, by adding additional stuff into the getters/setters you are actually increasing the risk that you will recreate something that is not an exact copy of the original.

Of course, this functionality was added for a reason. There may be some valid use cases for persisting the accessors, however, they will typically be rare. An example may be that you want to avoid persisting a calculated value, though you may want to ask the question why you don't calculate it on demand in the value's getter, or lazily initialise it in the getter. Personally I cannot think of any good use case, and none of the answers here really give a "Software Engineering" answer.

Thanks to jaknap32, I wanted to aggregate the results according to Year and Month, so this worked:

df_join['YearMonth'] = df_join['timestamp'].apply(lambda x:x.strftime('%Y%m'))

Output was neat:

0    201108
1    201108
2    201108

Ctrl-Alt-X is the keyboard shortcut I use, although that may because I have Resharper installed - otherwise Ctrl W, X.

From the menu: View -> Toolbox.

You can easily view/change key bindings using Tools -> Options Environment->Keyboard. It has a convenient UI where you can enter a word, and it shows you what key bindings include that word, including View.Toolbox.

You might want to browse through the online MSDN documentation on getting started with Visual Studio.

I had this error as well and for me it was an OU with a forward slash in the name: "File/Folder Access Groups".

This forum thread pointed me in the right direction. In the end, calling .Replace("/","\\/") on each path value before use solved the problem for me.

System.Windows.Forms.ToolTip ToolTip1 = new System.Windows.Forms.ToolTip();
ToolTip1.SetToolTip( Label1, "Label for Label1");

You can increment the stack depth allowed - with this, deeper recursive calls will be possible, like this:

import sys
sys.setrecursionlimit(10000) # 10000 is an example, try with different values

... But I'd advise you to first try to optimize your code, for instance, using iteration instead of recursion.

Try this one,

myFrame.setVisible(true);
EventQueue.invokeLater(new Runnable() {

   @Override
     public void run() {
         myComponent.grabFocus();
         myComponent.requestFocus();//or inWindow
     }
});

There is a simple hack, use $_SESSION and create an array of the posted values, and once you go to the File_C.php you can use it then do you process after that destroy it.

for me, the query that did the job was:

only screen and (device-width: 320px) and (device-height: 568px) and (-webkit-device-pixel-ratio: 2)

A good thing to remember are these simple rules, and they apply to both parameters and return types...

• Value - makes a copy of the item in question.
• Pointer - refers to the address of the item in question.
• Reference - is literally the item in question.

There is a time and place for each, so make sure you get to know them. Local variables, as you've shown here, are just that, limited to the time they are locally alive in the function scope. In your example having a return type of int* and returning &i would have been equally incorrect. You would be better off in that case doing this...

void func1(int& oValue)
{
    oValue = 1;
}

Doing so would directly change the value of your passed in parameter. Whereas this code...

void func1(int oValue)
{
    oValue = 1;
}

would not. It would just change the value of oValue local to the function call. The reason for this is because you'd actually be changing just a "local" copy of oValue, and not oValue itself.

As other said, there's no way to achieve this in all browser, so best way of doing so crossbrowser is using javascript unobtrusively. Basically you have to turn your radiobutton into links (fully customizable via CSS). each click on link will be bound to the related radiobox, toggling his state and all the others.

Make sure you have created persistence.xml file under the 'src' folder. I created under the project folder and that was my problem.

So without Extension functions if you are looking for simple and easy.. This is what I did

<%= Html.DropDownListFor(x => x.CurrentAddress.State, new SelectList(Enum.GetValues(typeof(XXXXX.Sites.YYYY.Models.State))))%>

where XXXXX.Sites.YYYY.Models.State is an enum

Probably better to do helper function, but when time is short this will get the job done.

You can use the GraphRequest class to issue calls to the Facebook Graph API to get user information. See https://developers.facebook.com/docs/android/graph for more info.

The most efficient way to remove duplicates from integer array without using set is, just create a temp array and iterate the original array and check if number exists in temp array then do not push into array else put into temp array and return temp array as result. Please consider the following code snippet :

package com.numbers;

import java.util.Arrays;

public class RemoveDuplicates {
    public int[] removeDuplicate(int[] array) {
        int[] tempArray = new int[array.length];
        int j = 0;
        for (int i : array) {
            if (!isExists(tempArray, i)) {
                tempArray[j++] = i;
            }
        }
        return tempArray;
    }

    public static boolean isExists(int[] array, int num) {
        if (array == null)
            return false;
        for (int i : array) {
            if (i == num) {
                return true;
            }
        }
        return false;
    }

    public static void main(String[] args) {
        int [] array = { 10, 20, 30, 10, 45, 30 };
        RemoveDuplicates duplicates = new RemoveDuplicates();
        System.out.println("Before removing duplicates : " + Arrays.toString(array));
        int [] newArray = duplicates.removeDuplicate(array);
        System.out.println("After removing duplicates : " + Arrays.toString(newArray));

    }
}

Please use this profile

  <profiles>
    <profile>
        <repositories>
            <repository>
                <id>mvnrepository</id>
                <name>mvnrepository</name>
                <url>http://www.mvnrepository.com</url>
            </repository>
        </repositories>
    </profile>
  </profiles>
  <activeProfiles>
    <activeProfile>mvnrepository</activeProfile>
  </activeProfiles>

Yes, this is possible. According to the SQLite FAQ:

A column declared INTEGER PRIMARY KEY will autoincrement.

This is how I did it, I hope it brings a new perspective how this works on Swift.

In this example below I will get the any string between []

var sample = "this is an [hello] amazing [world]"

var regex = NSRegularExpression(pattern: "\\[.+?\\]"
, options: NSRegularExpressionOptions.CaseInsensitive 
, error: nil)

var matches = regex?.matchesInString(sample, options: nil
, range: NSMakeRange(0, countElements(sample))) as Array<NSTextCheckingResult>

for match in matches {
   let r = (sample as NSString).substringWithRange(match.range)//cast to NSString is required to match range format.
    println("found= \(r)")
}

Try this code.

<input type="button" value="Open Window"
onclick="window.open('http://www.google.com')">

Subscript out of Range error occurs when you try to reference an Index for a collection that is invalid.

Most likely, the index in Windows does not actually include .xls. The index for the window should be the same as the name of the workbook displayed in the title bar of Excel.

As a guess, I would try using this:

Windows("Data Sheet - " & ComboBox_Month.Value & " " & TextBox_Year.Value).Activate

in menu bar click on Edit->preference->advance at bottom click the check box true that is for Show develop menu in menu bar now a develop menu is display at menu bar where you can see all develop option and inspect.

If you're willing to include the jQuery UI library, in addition to jQuery itself, then you can simply use hide(), with additional arguments, as follows:

$(document).ready(
    function(){
        $('#slider').click(
            function(){
                $(this).hide('slide',{direction:'right'},1000);

            });
    });

JS Fiddle demo.

Without using jQuery UI, you could achieve your aim just using animate():

$(document).ready(
    function(){
        $('#slider').click(
            function(){
                $(this)
                    .animate(
                        {
                            'margin-left':'1000px'
                            // to move it towards the right and, probably, off-screen.
                        },1000,
                        function(){
                            $(this).slideUp('fast');
                            // once it's finished moving to the right, just 
                            // removes the the element from the display, you could use
                            // `remove()` instead, or whatever.
                        }
                        );

            });
    });

JS Fiddle demo

If you do choose to use jQuery UI, then I'd recommend linking to the Google-hosted code, at: https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.6/jquery-ui.min.js

I have examined all the above answer's, We just need to implement two things to work it as expected.

Step - 1: Add the (click) event in the anchor tag in the HTML page and remove the href=" " as its explicitly for navigating to external links, Instead use routerLink = " " which helps in navigating views.

<ul>
  <li><a routerLink="" (click)="hitAnchor1($event)"><p>Click One</p></a></li>
  <li><a routerLink="" (click)="hitAnchor2($event)"><p>Click Two</p></a></li>
</ul>

Step - 2: Call the above function to attach the click event to anchor tags (coming from ajax) in the .ts file,

  hitAnchor1(e){
      console.log("Events", e);
      alert("You have clicked the anchor-1 tag");
   }
  hitAnchor2(e){
      console.log("Events", e);
      alert("You have clicked the anchor-2 tag");
   }

That's all. It work's as expected. I created the example below, You can have a look:-

https://stackblitz.com/edit/angular-yn6q6t

This

for (int i = 0; i<args.length -1; ++i)
    count++;

basically computes args.length again, just incorrectly (loop condition should be i<args.length). Why not just use args.length (or nums.length) directly instead?

Otherwise your code seems OK. Although it looks as though you wanted to read the input from the command line, but don't know how to convert that into an array of numbers - is this your real problem?

A Guava solution, for completeness:

import com.google.common.io.BaseEncoding;
...
byte[] bytes = "Hello world".getBytes(StandardCharsets.UTF_8);
final String hex = BaseEncoding.base16().lowerCase().encode(bytes);

Now hex is "48656c6c6f20776f726c64".

I didn't understand why my this didn't work but I found out that this setting is now also under the programming language itself at:

'Editor' | 'Code Style' | < your language > | 'Wrapping and Braces' | 'Right margin (columns)'

I instead of hard coding escape codes that are specific to your current terminal, you should use tput.

This is my favorite demo script:

#!/bin/bash

tput init

end=$(( $(tput colors)-1 ))
w=8
for c in $(seq 0 $end); do
    eval "$(printf "tput setaf %3s   " "$c")"; echo -n "$_"
    [[ $c -ge $(( w*2 )) ]] && offset=2 || offset=0
    [[ $(((c+offset) % (w-offset))) -eq $(((w-offset)-1)) ]] && echo
done

tput init

Try using the smtpsend program that comes with JavaMail, as described here. If that fails in the same way, there's something wrong with your JDK configuration or your network configuration.

Try this instead:

SUM(CASE WHEN ValueDate > @startMonthDate THEN cash ELSE 0 END)

Explanation

Your CASE expression has incorrect syntax. It seems you are confusing the simple CASE expression syntax with the searched CASE expression syntax. See the documentation for CASE:

The CASE expression has two formats:

• The simple CASE expression compares an expression to a set of simple expressions to determine the result.
• The searched CASE expression evaluates a set of Boolean expressions to determine the result.

You want the searched CASE expression syntax:

CASE
     WHEN Boolean_expression THEN result_expression [ ...n ] 
     [ ELSE else_result_expression ] 
END

As a side note, if performance is an issue you may find that this expression runs more quickly if you rewrite using a JOIN and GROUP BY instead of using a dependent subquery.

Using the abc module for abstract base classes seems to do the trick.

from abc import ABCMeta, abstractmethod

class IInterface:
    __metaclass__ = ABCMeta

    @classmethod
    def version(self): return "1.0"
    @abstractmethod
    def show(self): raise NotImplementedError

class MyServer(IInterface):
    def show(self):
        print 'Hello, World 2!'

class MyBadServer(object):
    def show(self):
        print 'Damn you, world!'


class MyClient(object):

    def __init__(self, server):
        if not isinstance(server, IInterface): raise Exception('Bad interface')
        if not IInterface.version() == '1.0': raise Exception('Bad revision')

        self._server = server


    def client_show(self):
        self._server.show()


# This call will fail with an exception
try:
    x = MyClient(MyBadServer)
except Exception as exc:
    print 'Failed as it should!'

# This will pass with glory
MyClient(MyServer()).client_show()

i find this method from ClickHouse Operator Build From Sources and it helps and save my life!

docker save altinity/clickhouse-operator | (eval $(minikube docker-env) && 
docker load)

Try this one -

DECLARE @i FLOAT = 6.677756

SELECT 
      ROUND(@i, 2)
    , FORMAT(@i, 'N2')
    , CAST(@i AS DECIMAL(18,2))
    , SUBSTRING(PARSENAME(CAST(@i AS VARCHAR(10)), 1), PATINDEX('%.%', CAST(@i AS VARCHAR(10))) - 1, 2)
    , FLOOR((@i - FLOOR(@i)) * 100)

Output:

----------------------
6,68
6.68
6.68
67
67

Basically you are doing it the right way. However, you should use an instance of the DataContext for querying (it's not obvious that DataContext is an instance or the type name from your query):

var result = (from a in new DataContext().Persons
              where a.Age > 18
              select new Person { Name = a.Name, Age = a.Age }).ToList();

Apparently, the Person class is your LINQ to SQL generated entity class. You should create your own class if you only want some of the columns:

class PersonInformation {
   public string Name {get;set;}
   public int Age {get;set;}
}

var result = (from a in new DataContext().Persons
              where a.Age > 18
              select new PersonInformation { Name = a.Name, Age = a.Age }).ToList();

You can freely swap var with List<PersonInformation> here without affecting anything (as this is what the compiler does).

Otherwise, if you are working locally with the query, I suggest considering an anonymous type:

var result = (from a in new DataContext().Persons
              where a.Age > 18
              select new { a.Name, a.Age }).ToList();

Note that in all of these cases, the result is statically typed (it's type is known at compile time). The latter type is a List of a compiler generated anonymous class similar to the PersonInformation class I wrote above. As of C# 3.0, there's no dynamic typing in the language.

UPDATE:

If you really want to return a List<Person> (which might or might not be the best thing to do), you can do this:

var result = from a in new DataContext().Persons
             where a.Age > 18
             select new { a.Name, a.Age };

List<Person> list = result.AsEnumerable()
                          .Select(o => new Person {
                                           Name = o.Name, 
                                           Age = o.Age
                          }).ToList();

You can merge the above statements too, but I separated them for clarity.

This is fixed by adding a new option Retain CR\LF on copy or save under the Tools -> Options... menu, Query Results -> SQL Server -> Results to Grid.

You need to open new session (window) to make the change take a place.

The default is unselected (false) which means that copying/saving from the grid will copy the text as it is displayed (with CR\LF replaced with spaces). If set to true the text will be copied/saved from the grid as it actually is stored - without the character replacement.

In case people missed following the chain of connect items (leading to https://connect.microsoft.com/SQLServer/feedback/details/735714), this issue has been fixed in the preview version of SSMS.

You can download this for free from https://msdn.microsoft.com/library/mt238290.aspx, it is a standalone download so does not need the full SQL media anymore.

(Note - the page at https://msdn.microsoft.com/library/ms190078.aspx currently isn't updated with this information. I'm following up on this so it should reflect the new option soon)

You might want to do something like this (if you're using java 5 and more)

Scanner scanner = new Scanner(new File("tall.txt"));
int [] tall = new int [100];
int i = 0;
while(scanner.hasNextInt())
{
     tall[i++] = scanner.nextInt();
}

Via Julian Grenier from Reading Integers From A File In An Array

For my case removing input type did the trick, i was using android:inputType="textPostalAddress" due to that my textview was sticked to one line and was not wrapping, removing this fixed the issue.

I think you are confused about how the compiler puts things together. When you use -c flag, i.e. no linking is done, the input is C++ code, and the output is object code. The .o files thus don't mix with -c, and compiler warns you about that. Symbols from object file are not moved to other object files like that.

All object files should be on the final linker invocation, which is not the case here, so linker (called via g++ front-end) complains about missing symbols.

Here's a small example (calling g++ explicitly for clarity):

PROG ?= myprog
OBJS = worker.o main.o

all: $(PROG)

.cpp.o:
        g++ -Wall -pedantic -ggdb -O2 -c -o $@ $<

$(PROG): $(OBJS)
        g++ -Wall -pedantic -ggdb -O2 -o $@ $(OBJS)

There's also makedepend utility that comes with X11 - helps a lot with source code dependencies. You might also want to look at the -M gcc option for building make rules.

Make sure your code is in DOM Ready as pointed by rocket-hazmat

.click()

$('#RootNode').click(function(){
  //do something
});

document.getElementById("RootNode").onclick = function(){//do something}

Use event Delegation/

$(document).on("click", "#RootNode", function(){
   //do something
});

Wrap Code in Dom Ready

$(document).ready(function(){
    $('#RootNode').click(function(){
     //do something
    });
});

As far as I can tell, GitHub does not provide shell access, so I'm curious about how you managed to log in in the first place.

$ ssh -T [email protected]
Hi username! You've successfully authenticated, but GitHub does not provide
shell access.

You have to clone your repository locally, make the change there, and push the change to GitHub.

$ git clone [email protected]:username/reponame.git
$ cd reponame
$ git mv README README.md
$ git commit -m "renamed"
$ git push origin master

I had the same problem yesterday but I did it in a very clean way which works for both client side and server side validation.

Condition: Based on the value of other property in the model, you want to make another property required. Here is the code

public class RequiredIfAttribute : RequiredAttribute
{
    private String PropertyName { get; set; }
    private Object DesiredValue { get; set; }

    public RequiredIfAttribute(String propertyName, Object desiredvalue)
    {
        PropertyName = propertyName;
        DesiredValue = desiredvalue;
    }

    protected override ValidationResult IsValid(object value, ValidationContext context)
    {
        Object instance = context.ObjectInstance;
        Type type = instance.GetType();
        Object proprtyvalue = type.GetProperty(PropertyName).GetValue(instance, null);
        if (proprtyvalue.ToString() == DesiredValue.ToString())
        {
            ValidationResult result = base.IsValid(value, context);
            return result;
        }
        return ValidationResult.Success;
    }
}

Here PropertyName is the property on which you want to make your condition DesiredValue is the particular value of the PropertyName (property) for which your other property has to be validated for required

Say you have the following

public class User
{
    public UserType UserType { get; set; }

    [RequiredIf("UserType", UserType.Admin, ErrorMessageResourceName = "PasswordRequired", ErrorMessageResourceType = typeof(ResourceString))]
    public string Password
    {
        get;
        set;
    }
}

At last but not the least , register adapter for your attribute so that it can do client side validation (I put it in global.asax, Application_Start)

 DataAnnotationsModelValidatorProvider.RegisterAdapter(typeof(RequiredIfAttribute),typeof(RequiredAttributeAdapter));

Alternatively, the profile can be directly specified in the application.properties file by adding the line:

spring.profiles.active=prod

Profiles work in conjunction with Spring Boot properties files. By default, Spring Boot parses a file called application.properties – located in the src/main/resources directory – to identify configuration information.

Our first task will be to add a parameter in that file which will tell Spring to use a different environment-specific property file corresponding to the active profile (i.e. the profile that the app is currently being run with). We can do this by adding the following to the application.properties file:

spring.profiles.active=@activatedProperties@

Now we need to create the two new environment-specific property files (in the same path as the existing application.properties file), one to be used by the DEV profile and one to be used by the PROD profile. These files need to be named the following:

application-dev.properties

application-prod.properties

In each case, we specify prod as the active profile, which causes the application-prod.properties file to be chosen for configuration purposes.

You just need to add these 3 lines of code. Replace the icon with your own icon. If you want to generate icons use this

getSupportActionBar().setHomeAsUpIndicator(R.drawable.icon_back_arrow);
getActionBar().setHomeButtonEnabled(true);
getActionBar().setDisplayHomeAsUpEnabled(true);

shutil.rmtree is the asynchronous function, so if you want to check when it complete, you can use while...loop

import os
import shutil

shutil.rmtree(path)

while os.path.exists(path):
  pass

print('done')

Here is the code
Source: forums.devx.com/showthread.php?t=153784

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.regex.Pattern;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;

/**
 * list resources available from the classpath @ *
 */
public class ResourceList{

    /**
     * for all elements of java.class.path get a Collection of resources Pattern
     * pattern = Pattern.compile(".*"); gets all resources
     * 
     * @param pattern
     *            the pattern to match
     * @return the resources in the order they are found
     */
    public static Collection<String> getResources(
        final Pattern pattern){
        final ArrayList<String> retval = new ArrayList<String>();
        final String classPath = System.getProperty("java.class.path", ".");
        final String[] classPathElements = classPath.split(System.getProperty("path.separator"));
        for(final String element : classPathElements){
            retval.addAll(getResources(element, pattern));
        }
        return retval;
    }

    private static Collection<String> getResources(
        final String element,
        final Pattern pattern){
        final ArrayList<String> retval = new ArrayList<String>();
        final File file = new File(element);
        if(file.isDirectory()){
            retval.addAll(getResourcesFromDirectory(file, pattern));
        } else{
            retval.addAll(getResourcesFromJarFile(file, pattern));
        }
        return retval;
    }

    private static Collection<String> getResourcesFromJarFile(
        final File file,
        final Pattern pattern){
        final ArrayList<String> retval = new ArrayList<String>();
        ZipFile zf;
        try{
            zf = new ZipFile(file);
        } catch(final ZipException e){
            throw new Error(e);
        } catch(final IOException e){
            throw new Error(e);
        }
        final Enumeration e = zf.entries();
        while(e.hasMoreElements()){
            final ZipEntry ze = (ZipEntry) e.nextElement();
            final String fileName = ze.getName();
            final boolean accept = pattern.matcher(fileName).matches();
            if(accept){
                retval.add(fileName);
            }
        }
        try{
            zf.close();
        } catch(final IOException e1){
            throw new Error(e1);
        }
        return retval;
    }

    private static Collection<String> getResourcesFromDirectory(
        final File directory,
        final Pattern pattern){
        final ArrayList<String> retval = new ArrayList<String>();
        final File[] fileList = directory.listFiles();
        for(final File file : fileList){
            if(file.isDirectory()){
                retval.addAll(getResourcesFromDirectory(file, pattern));
            } else{
                try{
                    final String fileName = file.getCanonicalPath();
                    final boolean accept = pattern.matcher(fileName).matches();
                    if(accept){
                        retval.add(fileName);
                    }
                } catch(final IOException e){
                    throw new Error(e);
                }
            }
        }
        return retval;
    }

    /**
     * list the resources that match args[0]
     * 
     * @param args
     *            args[0] is the pattern to match, or list all resources if
     *            there are no args
     */
    public static void main(final String[] args){
        Pattern pattern;
        if(args.length < 1){
            pattern = Pattern.compile(".*");
        } else{
            pattern = Pattern.compile(args[0]);
        }
        final Collection<String> list = ResourceList.getResources(pattern);
        for(final String name : list){
            System.out.println(name);
        }
    }
}  

If you are using Spring Have a look at PathMatchingResourcePatternResolver

I had same problem and in my case this was because curl_exec function is disabled in php.ini. Check for logs:

PHP Warning:  curl_exec() has been disabled for security reasons in /var/www/***/html/test.php on line 18

Solution is remove curl_exec from disabled functions in php.ini on server configuration file.

@techedemic is correct but is missing '.' to mention the current directory, and this command go throught all subdirectories.

find . -name '*.gz' -exec gunzip '{}' \;

You can put a "onload" attribute inside the body

...<body onload="myFunction()">...

Or if you are using jQuery, you can do

$(document).ready(function(){ /*code here*/ }) 

or 

$(window).load(function(){ /*code here*/ })

I hope it answer your question.

Note that the $(window).load will execute after the document is rendered on your page.

You can't control which you're referencing, given the same level of specificity in the rule (e.g. both are simply .banner) the stylesheet included last will win.

It's per-property, so if there's a combination going on (for example one has background, the other has color) then you'll get the combination...if a property is defined in both, whatever it is the last time it appears in stylesheet order wins.

Just a quick check, if you are using client-side templating engine such as handlebars, your js will load after document.ready, hence there will be no element to bind the event to, therefore either use onclick handler or use it on the body and check for current target

Following on from LachlanB's answer, if your ApiController doesn't sit within a particular directory (like /api) you can instead test the request using RouteTable.Routes.GetRouteData, for example:

protected void Application_PostAuthorizeRequest()
    {
        // WebApi SessionState
        var routeData = RouteTable.Routes.GetRouteData(new HttpContextWrapper(HttpContext.Current));
        if (routeData != null && routeData.RouteHandler is HttpControllerRouteHandler)
            HttpContext.Current.SetSessionStateBehavior(SessionStateBehavior.Required);
    }

Remember that a single = is always an assignment in C or C++.

Your test should be if ( match == 0 && k == M )you made a typo on the k == M test.

If you really mean k=M (i.e. a side-effecting assignment inside a test) you should for readability reasons code if (match == 0 && (k=m) != 0) but most coding rules advise not writing that.

BTW, your mistake suggests to ask for all warnings (e.g. -Wall option to g++), and to upgrade to recent compilers. The next GCC 4.8 will give you:

 % g++-trunk -Wall -c ederman.cc
 ederman.cc: In function ‘void foo()’:
 ederman.cc:9:30: error: lvalue required as left operand of assignment
          if ( match == 0 && k = M )
                               ^

and Clang 3.1 also tells you ederman.cc:9:30: error: expression is not assignable

So use recent versions of free compilers and enable all the warnings when using them.

try this

for example

DecimalFormat df = new DecimalFormat("#.##");
df.format(55.544545);

output:

55.54

you can use Vuex to handle all your global data

If you're just doing some quick and dirty temporary work, you can also skip typing out an explicit CREATE TABLE statement and just make the temp table with a SELECT...INTO and include an Identity field in the select list.

select IDENTITY(int, 1, 1) as ROW_ID,
       Name
into #tmp
from (select 'Bob' as Name union all
      select 'Susan' as Name union all
      select 'Alice' as Name) some_data

select *
from #tmp

in your dispatcher servlet context xml, you have to add a propertie "<property name="contentType" value="text/html;charset=UTF-8" />" on your viewResolver bean. we are using freemarker for views.

it looks something like this:

<bean id="viewResolver" class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">
       ...
       <property name="contentType" value="text/html;charset=UTF-8" />
       ...
</bean>

Have you tried using Firebug to inspect the rendered HTML, and to see exactly what css is being applied to the various elements? That should pick up css errors like the ones mentioned above, and you can see what styles are being inherited and from where - it is an invaluable too in any css debugging.

You are returning Observable<Product> and expecting it to be Product[] inside subscribe callback.

The Type returned from http.get() and getProducts() should be Observable<Product[]>

public getProducts(): Observable<Product[]> {
    return this.http.get<Product[]>(`api/products/v1/`);
}

Vim documentation

<Undo>      or                  *undo* *<Undo>* *u*
u           Undo [count] changes.  {Vi: only one level}

                            *:u* *:un* *:undo*
:u[ndo]         Undo one change.  {Vi: only one level}

                            *CTRL-R*
CTRL-R          Redo [count] changes which were undone.  {Vi: redraw screen}

                            *:red* *:redo* *redo*
:red[o]         Redo one change which was undone.  {Vi: no redo}

                            *U*
U           Undo all latest changes on one line.  {Vi: while not
            moved off of it}

Improved Version of "Josh Marinacci" answer , it will read beyond Z column (i.e. AA1).

var XLSX = require('xlsx');
var workbook = XLSX.readFile('test.xlsx');
var sheet_name_list = workbook.SheetNames;
sheet_name_list.forEach(function(y) {
    var worksheet = workbook.Sheets[y];
    var headers = {};
    var data = [];
    for(z in worksheet) {
        if(z[0] === '!') continue;
        //parse out the column, row, and value
        var tt = 0;
        for (var i = 0; i < z.length; i++) {
            if (!isNaN(z[i])) {
                tt = i;
                break;
            }
        };
        var col = z.substring(0,tt);
        var row = parseInt(z.substring(tt));
        var value = worksheet[z].v;

        //store header names
        if(row == 1 && value) {
            headers[col] = value;
            continue;
        }

        if(!data[row]) data[row]={};
        data[row][headers[col]] = value;
    }
    //drop those first two rows which are empty
    data.shift();
    data.shift();
    console.log(data);
});

Scenario: Your domain: mydomain.com Domain you wish to send to: theirdomain.com

1. Determine the mail server you're sending to. Open a CMD prompt Type

NSLOOKUP 
 set q=mx 
 theirdomain.com

Response:

Non-authoritative answer: 
theirdomain.com MX preference = 50, mail exchanger = mail.theirdomain.com 
Nslookup_big

EDIT Be sure to type exit to terminate NSLOOKUP.

2. Connect to their mail server

SMTP communicates over port 25. We will now try to use TELNET to connect to their mail server "mail.theirdomain.com"

Open a CMD prompt

TELNET MAIL.THEIRDOMAIN.COM 25

You should see something like this as a response:

220 mx.google.com ESMTP 6si6253627yxg.6

Be aware that different servers will come up with different greetings but you should get SOMETHING. If nothing comes up at this point there are 2 possible problems. Port 25 is being blocked at your firewall, or their server is not responding. Try a different domain, if that works then it's not you.

3. Send an Email

Now, use simple SMTP commands to send a test email. This is very important, you CANNOT use the backspace key, it will work onscreen but not be interpreted correctly. You have to type these commands perfectly.

ehlo mydomain.com 
mail from:<[email protected]> 
rcpt to:<[email protected]> 
data 
This is a test, please do not respond
. 
quit

So, what does that all mean? EHLO - introduce yourself to the mail server HELO can also be used but EHLO tells the server to use the extended command set (not that we're using that).

MAIL FROM - who's sending the email. Make sure to place this is the greater than/less than brackets as many email servers will require this (Postini).

RCPT TO - who you're sending it to. Again you need to use the brackets. See Step #4 on how to test relaying mail!

DATA - tells the SMTP server that what follows is the body of your email. Make sure to hit "Enter" at the end.

. - the period alone on the line tells the SMTP server you're all done with the data portion and it's clear to send the email.

quit - exits the TELNET session.

4. Test SMTP relay Testing SMTP relay is very easy, and simply requires a small change to the above commands. See below:

ehlo mydomain.com 
mail from:<[email protected]> 
rcpt to:<[email protected]> 
data 
This is a test, please do not respond 
. 
quit

See the difference? On the RCPT TO line, we're sending to a domain that is not controlled by the SMTP server we're sending to. You will get an immediate error is SMTP relay is turned off. If you're able to continue and send an email, then relay is allowed by that server.

In case someone is looking for a way to comment multiple lines in a html template in Ruby on Rails, there might be a problem with =begin =end, for instance:

<%
=begin
%>
  ... multiple HTML lines to comment out
  <%= image_tag("image.jpg") %>
<%
=end
%>

will fail because of the %> closing the image_tag.

In this case, maybe it is arguable whether this is commenting out or not, but I prefer to enclose the undesired section with an "if false" block:

<% if false %>
  ... multiple HTML lines to comment out
  <%= image_tag("image.jpg") %>
<% end %>

This will work.

opacity: 0.99; on wrapper solve webkit bug

In Py2.x

The commands dict.items(), dict.keys() and dict.values() return a copy of the dictionary's list of (k, v) pair, keys and values. This could take a lot of memory if the copied list is very large.

The commands dict.iteritems(), dict.iterkeys() and dict.itervalues() return an iterator over the dictionary’s (k, v) pair, keys and values.

The commands dict.viewitems(), dict.viewkeys() and dict.viewvalues() return the view objects, which can reflect the dictionary's changes. (I.e. if you del an item or add a (k,v) pair in the dictionary, the view object can automatically change at the same time.)

$ python2.7

>>> d = {'one':1, 'two':2}
>>> type(d.items())
<type 'list'>
>>> type(d.keys())
<type 'list'>
>>> 
>>> 
>>> type(d.iteritems())
<type 'dictionary-itemiterator'>
>>> type(d.iterkeys())
<type 'dictionary-keyiterator'>
>>> 
>>> 
>>> type(d.viewitems())
<type 'dict_items'>
>>> type(d.viewkeys())
<type 'dict_keys'>

While in Py3.x

In Py3.x, things are more clean, since there are only dict.items(), dict.keys() and dict.values() available, which return the view objects just as dict.viewitems() in Py2.x did.

But

Just as @lvc noted, view object isn't the same as iterator, so if you want to return an iterator in Py3.x, you could use iter(dictview) :

$ python3.3

>>> d = {'one':'1', 'two':'2'}
>>> type(d.items())
<class 'dict_items'>
>>>
>>> type(d.keys())
<class 'dict_keys'>
>>>
>>>
>>> ii = iter(d.items())
>>> type(ii)
<class 'dict_itemiterator'>
>>>
>>> ik = iter(d.keys())
>>> type(ik)
<class 'dict_keyiterator'>

TextView tt;
int color = Integer.parseInt("bdbdbd", 16)+0xFF000000;
tt.setTextColor(color);

also

tt.setBackgroundColor(Integer.parseInt("d4d446", 16)+0xFF000000);

also

tt.setBackgroundColor(Color.parseColor("#d4d446"));

see:

Java/Android String to Color conversion

Don't use sprintf.
It will overflow your String-Buffer and crash your Program.
Always use snprintf

Created Kotlin extension function to get screen width and height -

fun Context?.screenWidthInPx(): Int {
    if (this == null) return 0
    val dm = DisplayMetrics()
    val wm = this.getSystemService(Context.WINDOW_SERVICE) as WindowManager
    wm.defaultDisplay.getMetrics(dm)
    return dm.widthPixels
}
//comment
fun Context?.screenHeightInPx(): Int {
    if (this == null) return 0
    val dm = DisplayMetrics()
    val wm = this.getSystemService(Context.WINDOW_SERVICE) as WindowManager
    wm.defaultDisplay.getMetrics(dm)
    return dm.heightPixels
}

Well if you want to look into this differently, you just need to know what are options does the React has that non exhaustive-deps? One of the reason you should not use a closure function inside the effect is on every render, it will be re-created/destroy again.

So there are multiple React methods in hooks that is considered stable and non-exhausted where you do not have to apply to the useEffect dependencies, and in turn will not break the rules engagement of react-hooks/exhaustive-deps. For example the second return variable of useReducer or useState which is a function.

const [,dispatch] = useReducer(reducer, {});

useEffect(() => {
    dispatch(); // non-exhausted, eslint won't nag about this
}, []);

So in turn you can have all your external dependencies together with your current dependencies coexist together within your reducer function.

const [,dispatch] = useReducer((current, update) => {
    const { foobar } = update;
    // logic

    return { ...current, ...update };
}), {});

const [foobar, setFoobar] = useState(false);

useEffect(() => {
    dispatch({ foobar }); // non-exhausted `dispatch` function
}, [foobar]);

The code won't work without an icon. So, add the setSmallIcon call to the builder chain like this for it to work:

.setSmallIcon(R.drawable.icon)

Android Oreo (8.0) and above

Android 8 introduced a new requirement of setting the channelId property by using a NotificationChannel.

private NotificationManager mNotificationManager;

NotificationCompat.Builder mBuilder =
    new NotificationCompat.Builder(mContext.getApplicationContext(), "notify_001");
Intent ii = new Intent(mContext.getApplicationContext(), RootActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(mContext, 0, ii, 0);

NotificationCompat.BigTextStyle bigText = new NotificationCompat.BigTextStyle();
bigText.bigText(verseurl);
bigText.setBigContentTitle("Today's Bible Verse");
bigText.setSummaryText("Text in detail");

mBuilder.setContentIntent(pendingIntent);
mBuilder.setSmallIcon(R.mipmap.ic_launcher_round);
mBuilder.setContentTitle("Your Title");
mBuilder.setContentText("Your text");
mBuilder.setPriority(Notification.PRIORITY_MAX);
mBuilder.setStyle(bigText);

mNotificationManager =
    (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);

// === Removed some obsoletes
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
{
    String channelId = "Your_channel_id";
    NotificationChannel channel = new NotificationChannel(
                                        channelId,
                                        "Channel human readable title",
                                        NotificationManager.IMPORTANCE_HIGH);
   mNotificationManager.createNotificationChannel(channel);
  mBuilder.setChannelId(channelId);
}

mNotificationManager.notify(0, mBuilder.build());

For existing project end existing repository with files:

git init
git remote add origin <.git>
git checkout -b master
git branch --set-upstream-to=origin/master master
git pull --allow-unrelated-histories

(i, j, n + 1) = k * b_xyt(xi, yi, tn) / (4 * hx * hy) * U_matrix(i + 1, j + 1, n) + _
(k * (a_xyt(xi, yi, tn) / hx ^ 2 + d_xyt(xi, yi, tn) / (2 * hx)))

_{From ms support}

To continue a statement from one line to the next, type a space followed by the line-continuation character [the underscore character on your keyboard (_)].

You can break a line at an operator, list separator, or period.

How about this page from Microsoft Connect (explaining the DesignData and DesignDataWithDesignTimeCreatableTypes) types. Quoting:

The following describes the two Build Actions for Sample Data files.

Sample data .xaml files must be assigned one of the below Build Actions:

DesignData: Sample data types will be created as faux types. Use this Build Action when the sample data types are not creatable or have read-only properties that you want to defined sample data values for.

DesignDataWithDesignTimeCreatableTypes: Sample data types will be created using the types defined in the sample data file. Use this Build Action when the sample data types are creatable using their default empty constructor.

Not so incredibly exhaustive, but it at least gives a hint. This MSDN walkthrough also gives some ideas. I don't know whether these Build Actions are applicable for non-Silverlight projects also.

According to others said, you cannot instantiate from abstract class. but it exist 2 way to use it. 1. make another non-abstact class that extends from abstract class. So you can instantiate from new class and use the attributes and methods in abstract class.

    public class MyCustomClass extends YourAbstractClass {

/// attributes, methods ,...
}

2. work with interfaces.

I think this should point you towards the right direction:

import java.beans.*

for (PropertyDescriptor pd : Introspector.getBeanInfo(Foo.class).getPropertyDescriptors()) {
  if (pd.getReadMethod() != null && !"class".equals(pd.getName()))
    System.out.println(pd.getReadMethod().invoke(foo));
}

Note that you could create BeanInfo or PropertyDescriptor instances yourself, i.e. without using Introspector. However, Introspector does some caching internally which is normally a Good Thing (tm). If you're happy without a cache, you can even go for

// TODO check for non-existing readMethod
Object value = new PropertyDescriptor("name", Person.class).getReadMethod().invoke(person);

However, there are a lot of libraries that extend and simplify the java.beans API. Commons BeanUtils is a well known example. There, you'd simply do:

Object value = PropertyUtils.getProperty(person, "name");

BeanUtils comes with other handy stuff. i.e. on-the-fly value conversion (object to string, string to object) to simplify setting properties from user input.

Here's the whole process of creating a copying over a database using only pgadmin4 GUI (via backup and restore)

Postgres comes with Pgadmin4. If you use macOS you can press CMD+SPACE and type pgadmin4 to run it. This will open up a browser tab in chrome.

Steps for copying

1. Create the backup

Do this by rightclicking the database -> "backup"

2. Give the file a name.

Like test12345. Click backup. This creates a binary file dump, it's not in a .sql format

3. See where it downloaded

There should be a popup at the bottomright of your screen. Click the "more details" page to see where your backup downloaded to

4. Find the location of downloaded file

In this case, it's /users/vincenttang

5. Restore the backup from pgadmin

Assuming you did steps 1 to 4 correctly, you'll have a restore binary file. There might come a time your coworker wants to use your restore file on their local machine. Have said person go to pgadmin and restore

Do this by rightclicking the database -> "restore"

6. Select file finder

Make sure to select the file location manually, DO NOT drag and drop a file onto the uploader fields in pgadmin. Because you will run into error permissions. Instead, find the file you just created:

7. Find said file

You might have to change the filter at bottomright to "All files". Find the file thereafter, from step 4. Now hit the bottomright "Select" button to confirm

8. Restore said file

You'll see this page again, with the location of the file selected. Go ahead and restore it

9. Success

If all is good, the bottom right should popup an indicator showing a successful restore. You can navigate over to your tables to see if the data has been restored propery on each table.

10. If it wasn't successful:

Should step 9 fail, try deleting your old public schema on your database. Go to "Query Tool"

Execute this code block:

DROP SCHEMA public CASCADE; CREATE SCHEMA public;

Now try steps 5 to 9 again, it should work out

EDIT - Some additional notes. Update PGADMIN4 if you are getting an error during upload with something along the lines of "archiver header 1.14 unsupported version" during restore

If you can not see the "Prevent saving changes that required table re-creation" in list like that The image

You need to enable change tracking.

• Right click on your database and click Properties
• Click change tracking and make it enable
• Go Tools -> Options -> Designer again and uncheck it.

In my opinion a variable being "constant" is often an implementation detail and doesn't necessarily justify different naming conventions. It may help readability, but it may as well hurt it in some cases.

@echo off & setLocal EnableDelayedExpansion

for /L %%a in (1 1 100) do (
echo !random!
)

I had exactly the same issue, and after many hours of debugging, I found out it was because I was accessing a subscript by using .subscript() instead of between []. XCode thinks this is perfectly valid, but gives this segmentation fault error when building.

use below method for setting padding dynamically

setPadding(int left, int top, int right, int bottom)

Example :

view.setPadding(2,2,2,2);

This is what worked for me.

check if there exists a typings.json file,

It looks something like this,

{
  "globalDependencies": {
    "core-js": "registry:dt/core-js#0.0.0+20160317120654",
    "jasmine": "registry:dt/jasmine#2.2.0+20160505161446",
    "node": "registry:dt/node#6.0.0+20160613154055"
  }
}

Install typings package globally.

sudo npm install -g typings

after installing typings, run

typings install

then restart the server.

If user.py and dir.py are not including classes then

from .user import User
from .dir import Dir

is not working. You should then import as

from . import user
from . import dir

Sure, you can put your constants into a separate module. For example:

const.py:

A = 12
B = 'abc'
C = 1.2

main.py:

import const

print const.A, const.B, const.C

Note that as declared above, A, B and C are variables, i.e. can be changed at run time.

Yes, c++ struct is very similar to c++ class, except the fact that everything is publicly inherited, ( single / multilevel / hierarchical inheritance, but not hybrid and multiple inheritance ) here is a code for demonstration

#include<bits/stdc++.h>
using namespace std;

struct parent
{
    int data;
    parent() : data(3){};           // default constructor
    parent(int x) : data(x){};      // parameterized constructor
};
struct child : parent
{
    int a , b;
    child(): a(1) , b(2){};             // default constructor
    child(int x, int y) : a(x) , b(y){};// parameterized constructor
    child(int x, int y,int z)           // parameterized constructor
    {
        a = x;
        b = y;
        data = z;
    }
    child(const child &C)               // copy constructor
    {
        a = C.a;
        b = C.b;
        data = C.data;
    }
};
int main()
{
   child c1 ,
         c2(10 , 20),
         c3(10 , 20, 30),
         c4(c3);

    auto print = [](const child &c) { cout<<c.a<<"\t"<<c.b<<"\t"<<c.data<<endl; };

    print(c1);
    print(c2);
    print(c3);
    print(c4);
}
OUTPUT 
1       2       3
10      20      3
10      20      30
10      20      30

<SafeAreaView style={{flex:1}}>
        <View style={{alignItems:'center'}}>
            <Text style={{ textAlign:'center' }}>
                    This code will make your text centered even when there is a line-break
            </Text>
        </View>
</SafeAreaView>

Using a vector of shared_ptr removes the possibility of leaking memory because you forgot to walk the vector and call delete on each element. Let's walk through a slightly modified version of the example line-by-line.

typedef boost::shared_ptr<gate> gate_ptr;

Create an alias for the shared pointer type. This avoids the ugliness in the C++ language that results from typing std::vector<boost::shared_ptr<gate> > and forgetting the space between the closing greater-than signs.

    std::vector<gate_ptr> vec;

Creates an empty vector of boost::shared_ptr<gate> objects.

    gate_ptr ptr(new ANDgate);

Allocate a new ANDgate instance and store it into a shared_ptr. The reason for doing this separately is to prevent a problem that can occur if an operation throws. This isn't possible in this example. The Boost shared_ptr "Best Practices" explain why it is a best practice to allocate into a free-standing object instead of a temporary.

    vec.push_back(ptr);

This creates a new shared pointer in the vector and copies ptr into it. The reference counting in the guts of shared_ptr ensures that the allocated object inside of ptr is safely transferred into the vector.

What is not explained is that the destructor for shared_ptr<gate> ensures that the allocated memory is deleted. This is where the memory leak is avoided. The destructor for std::vector<T> ensures that the destructor for T is called for every element stored in the vector. However, the destructor for a pointer (e.g., gate*) does not delete the memory that you had allocated. That is what you are trying to avoid by using shared_ptr or ptr_vector.

The scenario I most find myself using it is for defaulting values and especially in returns

return someIndex < maxIndex ? someIndex : maxIndex;

Those are really the only places I find it nice, but for them I do.

Though if you're looking for a boolean this might sometimes look like an appropriate thing to do:

bool hey = whatever < whatever_else ? true : false;

Because it's so easy to read and understand, but that idea should always be tossed for the more obvious:

bool hey = (whatever < whatever_else);

You can use subqueries to do this:

select * from (select values1 from table1 order by orderby1) as a
union all
select * from (select values2 from table2 order by orderby2) as b

CryptoSwift is very interesting project but for now it has some AES speed limitations. Be carefull if you need to do some serious crypto - it might be worth to go through the pain of bridge implemmenting CommonCrypto.

BigUps to Marcin for pureSwift implementation

If you don't care about rouding, just convert the number to a string, then remove everything after the period including the period. This works whether there is a decimal or not.

const sEpoch = ((+new Date()) / 1000).toString();
const formattedEpoch = sEpoch.split('.')[0];

Simplest way I did this. Not the best way but simplest way I know how.

import "fmt"

func main() {
    fmt.Print(addTwoNumbers(5, 6))
}

func addTwoNumbers(val1 interface{}, val2 interface{}) int {
    op1, _ := val1.(int)
    op2, _ := val2.(int)

    return op1 + op2
}

This is copied from above, but condensed slightly and re-written in semantic terms. Note: #Container has display: flex; and flex-direction: column;, while the columns have flex: 3; and flex: 2; (where "One value, unitless number" determines the flex-grow property) per MDN flex docs.

#Container {_x000D_
  display: flex;_x000D_
  flex-direction: column;_x000D_
  height: 600px;_x000D_
  width: 580px;_x000D_
}_x000D_
_x000D_
.Content {_x000D_
  display: flex;_x000D_
  flex: 1;_x000D_
}_x000D_
_x000D_
#Detail {_x000D_
  flex: 3;_x000D_
  background-color: lime;_x000D_
}_x000D_
_x000D_
#ThumbnailContainer {_x000D_
  flex: 2;_x000D_
  background-color: black;_x000D_
}

<div id="Container">_x000D_
  <div class="Content">_x000D_
    <div id="Detail"></div>_x000D_
    <div id="ThumbnailContainer"></div>_x000D_
  </div>_x000D_
</div>

Spring source code to explain how ApplicationContextAware work
when you use ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
In AbstractApplicationContext class,the refresh() method have the following code:

// Prepare the bean factory for use in this context.
prepareBeanFactory(beanFactory);

enter this method,beanFactory.addBeanPostProcessor(new ApplicationContextAwareProcessor(this)); will add ApplicationContextAwareProcessor to AbstractrBeanFactory.

protected void prepareBeanFactory(ConfigurableListableBeanFactory beanFactory) {
        // Tell the internal bean factory to use the context's class loader etc.
        beanFactory.setBeanClassLoader(getClassLoader());
        beanFactory.setBeanExpressionResolver(new StandardBeanExpressionResolver(beanFactory.getBeanClassLoader()));
        beanFactory.addPropertyEditorRegistrar(new ResourceEditorRegistrar(this, getEnvironment()));
        // Configure the bean factory with context callbacks.
        beanFactory.addBeanPostProcessor(new ApplicationContextAwareProcessor(this));
...........

When spring initialize bean in AbstractAutowireCapableBeanFactory, in method initializeBean,call applyBeanPostProcessorsBeforeInitialization to implement the bean post process. the process include inject the applicationContext.

@Override
    public Object applyBeanPostProcessorsBeforeInitialization(Object existingBean, String beanName)
            throws BeansException {
        Object result = existingBean;
        for (BeanPostProcessor beanProcessor : getBeanPostProcessors()) {
            result = beanProcessor.postProcessBeforeInitialization(result, beanName);
            if (result == null) {
                return result;
            }
        }
        return result;
    }

when BeanPostProcessor implement Objectto execute the postProcessBeforeInitialization method,for example ApplicationContextAwareProcessor that added before.

private void invokeAwareInterfaces(Object bean) {
        if (bean instanceof Aware) {
            if (bean instanceof EnvironmentAware) {
                ((EnvironmentAware) bean).setEnvironment(this.applicationContext.getEnvironment());
            }
            if (bean instanceof EmbeddedValueResolverAware) {
                ((EmbeddedValueResolverAware) bean).setEmbeddedValueResolver(
                        new EmbeddedValueResolver(this.applicationContext.getBeanFactory()));
            }
            if (bean instanceof ResourceLoaderAware) {
                ((ResourceLoaderAware) bean).setResourceLoader(this.applicationContext);
            }
            if (bean instanceof ApplicationEventPublisherAware) {
                ((ApplicationEventPublisherAware) bean).setApplicationEventPublisher(this.applicationContext);
            }
            if (bean instanceof MessageSourceAware) {
                ((MessageSourceAware) bean).setMessageSource(this.applicationContext);
            }
            if (bean instanceof ApplicationContextAware) {
                ((ApplicationContextAware) bean).setApplicationContext(this.applicationContext);
            }
        }
    }

July 2019

OSX Mojave 10.14.5 (18F132) IntelliJ 2019-1 Community Edition. It worked setting idea.properties file. I also configured JAVA_HOME pointing to /Library/Java/JavaVirtualMachines/jdk1.8.0_121.jdk/Contents/Home/

custom IntelliJ IDEA properties

idea_rt idea.no.launcher=true

I use the following class which implements the Runnable interface. With this class you can easily create new threads with arguments

public abstract class RunnableArg implements Runnable {

    Object[] m_args;

    public RunnableArg() {
    }

    public void run(Object... args) {
        setArgs(args);
        run();
    }

    public void setArgs(Object... args) {
        m_args = args;
    }

    public int getArgCount() {
        return m_args == null ? 0 : m_args.length;
    }

    public Object[] getArgs() {
        return m_args;
    }
}

$.browser was removed from jQuery starting with version 1.9. It is now available as a plugin. It's generally recommended to avoid browser detection, which is why it was removed.

To enhance Fabian's one-liner; let us say that we want to ignore only exit status 1 but to preserve the exit status if it is anything else:

tar -czf sample.tar.gz dir1 dir2 || ( export ret=$?; [[ $ret -eq 1 ]] || exit "$ret" )

This does everything sandeep's script does, on one line.

Floating Point Exception happens because of an unexpected infinity or NaN. You can track that using gdb, which allows you to see what is going on inside your C program while it runs. For more details: https://www.cs.swarthmore.edu/~newhall/unixhelp/howto_gdb.php

In a nutshell, these commands might be useful...

gcc -g myprog.c

gdb a.out

gdb core a.out

ddd a.out

Classic example "Index in Books"

Consider a "Book" of 1000 pages, divided by 10 Chapters, each section with 100 pages.

Simple, huh?

Now, imagine you want to find a particular Chapter that contains a word "Alchemist". Without an index page, you have no other option than scanning through the entire book/Chapters. i.e: 1000 pages.

This analogy is known as "Full Table Scan" in database world.

But with an index page, you know where to go! And more, to lookup any particular Chapter that matters, you just need to look over the index page, again and again, every time. After finding the matching index you can efficiently jump to that chapter by skipping the rest.

But then, in addition to actual 1000 pages, you will need another ~10 pages to show the indices, so totally 1010 pages.

Thus, the index is a separate section that stores values of indexed column + pointer to the indexed row in a sorted order for efficient look-ups.

Things are simple in schools, isn't it? :P

This will simply transform you first letter of text:

yourtext.substr(0,1).toUpperCase()+yourtext.substr(1);

binary search runs in O(logn) time whereas linear search runs in O(n) times thus binary search has better performance

JonH has covered very well the part on how to write the query. There is another significant issue that must be mentioned too, however, which is the performance characteristics of such a query. Let's repeat it here (adapted to Oracle):

SELECT EmployeeName FROM EmployeeTable WHERE LENGTH(EmployeeName) > 4;

This query is restricting the result of a function applied to a column value (the result of applying the LENGTH function to the EmployeeName column). In Oracle, and probably in all other RDBMSs, this means that a regular index on EmployeeName will be useless to answer this query; the database will do a full table scan, which can be really costly.

However, various databases offer a function indexes feature that is designed to speed up queries like this. For example, in Oracle, you can create an index like this:

CREATE INDEX EmployeeTable_EmployeeName_Length ON EmployeeTable(LENGTH(EmployeeName));

This might still not help in your case, however, because the index might not be very selective for your condition. By this I mean the following: you're asking for rows where the name's length is more than 4. Let's assume that 80% of the employee names in that table are longer than 4. Well, then the database is likely going to conclude (correctly) that it's not worth using the index, because it's probably going to have to read most of the blocks in the table anyway.

However, if you changed the query to say LENGTH(EmployeeName) <= 4, or LENGTH(EmployeeName) > 35, assuming that very few employees have names with fewer than 5 character or more than 35, then the index would get picked and improve performance.

Anyway, in short: beware of the performance characteristics of queries like the one you're trying to write.

var a = document.getElementById('yourlinkId'); //or grab it by tagname etc
a.href = "somelink url"

You can't. One workaround might be to generate a derived class at runtime and adding the attribute, although this is probably bit of an overkill.

For Swift

Create UITextField Extension

extension UITextField{

    func setPlaceHolderColor(){
        self.attributedPlaceholder = NSAttributedString(string: self.placeholder!, attributes: [NSForegroundColorAttributeName : UIColor.white])
    }
}

If Are you set from storyboard.

extension UITextField{
    @IBInspectable var placeHolderColor: UIColor? {
        get {
            return self.placeHolderColor
        }
        set {
            self.attributedPlaceholder = NSAttributedString(string:self.placeholder != nil ? self.placeholder! : "", attributes:[NSAttributedString.Key.foregroundColor : newValue!])
        }
    }
}

An API is a set of commands, functions, and protocols which programmers can use when building software for a specific OS or any other software. The API allows programmers to use predefined functions to interact with the operating system, instead of writing them from scratch. All computer operating systems, such as Windows, Unix, and the Mac OS and language such as Java provide an application program interface for programmers.

Source

Since your top level view already has android:background property set, you can use a <layer-list> (link) to create a new XML drawable that combines both your old background and your new rounded corners background.

Each <item> element in the list is drawn over the next, so the last item in the list is the one that ends up on top.

<?xml version="1.0" encoding="utf-8"?>
<layer-list
    xmlns:android="http://schemas.android.com/apk/res/android" >
    <item>
        <bitmap android:src="@drawable/mydialogbox" />
    </item>
    <item>
        <shape>
            <stroke
                android:width="1dp"
                android:color="@color/common_border_color" />

            <solid android:color="#ffffff" />

            <padding
                    android:left="1dp"
                    android:right="1dp"
                    android:top="1dp" />

            <corners android:radius="5dp" />
        </shape>
    </item>
</layer-list>

in addition,if you try to use CustomActionBarTheme,make sure there is

<application android:theme="@style/CustomActionBarTheme" ... />

in AndroidManifest.xml

not

<application android:theme="@android:style/CustomActionBarTheme" ... />

This worked for me.

Private Sub GridView1_CellFormatting(sender As Object, e As DataGridViewCellFormattingEventArgs) Handles GridView1.CellFormatting
    Dim idx As Integer = e.RowIndex
    Dim row As DataGridViewRow = VDataGridView1.Rows(idx)
    Dim newNo As Long = idx
    If Not _RowNumberStartFromZero Then
        newNo += 1
    End If

    Dim oldNo As Long = -1
    If row.HeaderCell.Value IsNot Nothing Then
        If IsNumeric(row.HeaderCell.Value) Then
            oldNo = CLng(row.HeaderCell.Value)
        End If
    End If

    If newNo <> oldNo Then 'only change if it's wrong or not set
        row.HeaderCell.Value = newNo.ToString()
        row.HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleRight
    End If
End Sub

This will explain better.

EntityManager em = new JPAUtil().getEntityManager();
Session session = em.unwrap(Session.class);
Criteria c = session.createCriteria(Name.class);

You can run a script, or a more complex parameter to the RUN. Here is an example from a Dockerfile I've downloaded to look at previously:

RUN cd /opt && unzip treeio.zip && mv treeio-master treeio && \
    rm -f treeio.zip && cd treeio && pip install -r requirements.pip

Because of the use of '&&', it will only get to the final 'pip install' command if all the previous commands have succeeded.

In fact, since every RUN creates a new commit & (currently) an AUFS layer, if you have too many commands in the Dockerfile, you will use up the limits, so merging the RUNs (when the file is stable) can be a very useful thing to do.

double myDouble = 420.5;
//Type cast double to int
int i = (int)myDouble;
System.out.println(i);

The double value is 420.5 and the application prints out the integer value of 420

There is the easy way

HTML:

<input type="checkbox" name="test[]" />x
<input type="checkbox" name="test[]"  />y
<input type="checkbox" name="test[]" />z
<button type="button" id="submit">Submit</button>

JQUERY:

$("#submit").on("click",function(){
    if (($("input[name*='test']:checked").length)<=0) {
        alert("You must check at least 1 box");
    }
    return true;
});

For this you not need any plugin. Enjoy;)

I found a very simple method that works well:

<input type="text" onclick="this.focus();this.select()">

I had to specify different generateDirectory (without this, the plugin was considering that files were up to date and wasn't generating anything during the second execution). And I recommend to follow the target/generated-sources/<tool> convention for generated sources so that they will be imported in your favorite IDE automatically. I also recommend to declare several execution instead of declaring the plugin twice (and to move the configuration inside each execution element):

<plugin>
  <groupId>org.jvnet.jaxb2.maven2</groupId>
  <artifactId>maven-jaxb2-plugin</artifactId>
  <version>0.7.1</version>
  <executions>
    <execution>
      <id>schema1-generate</id>
      <goals>
        <goal>generate</goal>
      </goals>
      <configuration>
        <schemaDirectory>src/main/resources/dir1</schemaDirectory>
        <schemaIncludes>
          <include>shiporder.xsd</include>
        </schemaIncludes>
        <generatePackage>com.stackoverflow.package1</generatePackage>
        <generateDirectory>${project.build.directory}/generated-sources/xjc1</generateDirectory>
      </configuration>
    </execution>
    <execution>
      <id>schema2-generate</id>
      <goals>
        <goal>generate</goal>
      </goals>
      <configuration>
        <schemaDirectory>src/main/resources/dir2</schemaDirectory>
        <schemaIncludes>
          <include>books.xsd</include>
        </schemaIncludes>
        <generatePackage>com.stackoverflow.package2</generatePackage>
        <generateDirectory>${project.build.directory}/generated-sources/xjc2</generateDirectory>
      </configuration>
    </execution>
  </executions>
</plugin>

With this setup, I get the following result after a mvn clean compile

$ tree target/
target/
+-- classes
¦   +-- com
¦   ¦   +-- stackoverflow
¦   ¦       +-- App.class
¦   ¦       +-- package1
¦   ¦       ¦   +-- ObjectFactory.class
¦   ¦       ¦   +-- Shiporder.class
¦   ¦       ¦   +-- Shiporder$Item.class
¦   ¦       ¦   +-- Shiporder$Shipto.class
¦   ¦       +-- package2
¦   ¦           +-- BookForm.class
¦   ¦           +-- BooksForm.class
¦   ¦           +-- ObjectFactory.class
¦   ¦           +-- package-info.class
¦   +-- dir1
¦   ¦   +-- shiporder.xsd
¦   +-- dir2
¦       +-- books.xsd
+-- generated-sources
    +-- xjc
    ¦   +-- META-INF
    ¦       +-- sun-jaxb.episode
    +-- xjc1
    ¦   +-- com
    ¦       +-- stackoverflow
    ¦           +-- package1
    ¦               +-- ObjectFactory.java
    ¦               +-- Shiporder.java
    +-- xjc2
        +-- com
            +-- stackoverflow
                +-- package2
                    +-- BookForm.java
                    +-- BooksForm.java
                    +-- ObjectFactory.java
                    +-- package-info.java

Which seems to be the expected result.

You have two choices:

1. Use fileno() to obtain the file descriptor associated with the stdio stream pointer

2. Don't use <stdio.h> at all, that way you don't need to worry about flush either - all writes will go to the device immediately, and for character devices the write() call won't even return until the lower-level IO has completed (in theory).

For device-level IO I'd say it's pretty unusual to use stdio. I'd strongly recommend using the lower-level open(), read() and write() functions instead (based on your later reply):

int fd = open("/dev/i2c", O_RDWR);
ioctl(fd, IOCTL_COMMAND, args);
write(fd, buf, length);

Improving a little on Hans Then's answer, we can just subclass the Timer function. The following becomes our entire "repeat timer" code, and it can be used as a drop-in replacement for threading.Timer with all the same arguments:

from threading import Timer

class RepeatTimer(Timer):
    def run(self):
        while not self.finished.wait(self.interval):
            self.function(*self.args, **self.kwargs)

Usage example:

def dummyfn(msg="foo"):
    print(msg)

timer = RepeatTimer(1, dummyfn)
timer.start()
time.sleep(5)
timer.cancel()

produces the following output:

foo
foo
foo
foo

and

timer = RepeatTimer(1, dummyfn, args=("bar",))
timer.start()
time.sleep(5)
timer.cancel()

produces

bar
bar
bar
bar

Here is a much improved version of Archana's solution. It works for any radix 1-16, and numbers <= 0, and it shouldn't clobber memory.

static char _numberSystem[] = "0123456789ABCDEF";
static char _twosComp[] = "FEDCBA9876543210";

static void safestrrev(char *buffer, const int bufferSize, const int strlen)
{
    int len = strlen;
    if (len > bufferSize)
    {
        len = bufferSize;
    }
    for (int index = 0; index < (len / 2); index++)
    {
        char ch = buffer[index];
        buffer[index] = buffer[len - index - 1];
        buffer[len - index - 1] = ch;
    }
}

static int negateBuffer(char *buffer, const int bufferSize, const int strlen, const int radix)
{
    int len = strlen;
    if (len > bufferSize)
    {
        len = bufferSize;
    }
    if (radix == 10)
    {
        if (len < (bufferSize - 1))
        {
            buffer[len++] = '-';
            buffer[len] = '\0';
        }
    }
    else
    {
        int twosCompIndex = 0;
        for (int index = 0; index < len; index++)
        {
            if ((buffer[index] >= '0') && (buffer[index] <= '9'))
            {
                twosCompIndex = buffer[index] - '0';
            }
            else if ((buffer[index] >= 'A') && (buffer[index] <= 'F'))
            {
                twosCompIndex = buffer[index] - 'A' + 10;
            }
            else if ((buffer[index] >= 'a') && (buffer[index] <= 'f'))
            {
                twosCompIndex = buffer[index] - 'a' + 10;
            }
            twosCompIndex += (16 - radix);
            buffer[index] = _twosComp[twosCompIndex];
        }
        if (len < (bufferSize - 1))
        {
            buffer[len++] = _numberSystem[radix - 1];
            buffer[len] = 0;
        }
    }
    return len;
}

static int twosNegation(const int x, const int radix)
{
    int n = x;
    if (x < 0)
    {
        if (radix == 10)
        {
            n = -x;
        }
        else
        {
            n = ~x;
        }
    }
    return n;
}

static char *safeitoa(const int x, char *buffer, const int bufferSize, const int radix)
{
    int strlen = 0;
    int n = twosNegation(x, radix);
    int nuberSystemIndex = 0;

    if (radix <= 16)
    {
        do
        {
            if (strlen < (bufferSize - 1))
            {
                nuberSystemIndex = (n % radix);
                buffer[strlen++] = _numberSystem[nuberSystemIndex];
                buffer[strlen] = '\0';
                n = n / radix;
            }
            else
            {
                break;
            }
        } while (n != 0);
        if (x < 0)
        {
            strlen = negateBuffer(buffer, bufferSize, strlen, radix);
        }
        safestrrev(buffer, bufferSize, strlen);
        return buffer;
    }
    return NULL;
}

First argument in update method is SyntheticEvent object that contains common properties and methods to any event, it is not reference to React component where there is property props.

if you need pass argument to update method you can do it like this

onClick={ (e) => this.props.onClick(e, 'home', 'Home') }

and get these arguments inside update method

update(e, space, txt){
   console.log(e.target, space, txt);
}

Example

event.target gives you the native DOMNode, then you need to use the regular DOM APIs to access attributes. For instance getAttribute or dataset

<button 
  data-space="home" 
  className="home" 
  data-txt="Home" 
  onClick={ this.props.onClick } 
/> 
  Button
</button>

onClick(e) {
   console.log(e.target.dataset.txt, e.target.dataset.space);
}

Example

Yes it is true.

If you create two instance of your class

Test t1 = new Test();
Test t2 = new Test();

Then t1.foo and t2.foo both synchronize on the same static object and hence block each other.

1. No.
2. To pad the Base64-encoded string to a multiple of 4 characters in length, so that it can be decoded correctly.

To convert a string to a stream you need to decide which encoding the bytes in the stream should have to represent that string - for example you can:

MemoryStream mStrm= new MemoryStream( Encoding.UTF8.GetBytes( contents ) );

MSDN references:

• http://msdn.microsoft.com/en-us/library/ds4kkd55%28v=VS.100%29.aspx
• http://msdn.microsoft.com/en-us/library/e55f3s5k.aspx

Just call this:

finishAffinity();

DisplayFor is also useful for templating. You could write a template for your Model, and do something like this:

@Html.DisplayFor(m => m)

Similar to @Html.EditorFor(m => m). It's useful for the DRY principal so that you don't have to write the same display logic over and over for the same Model.

Take a look at this blog on MVC2 templates. It's still very applicable to MVC3:

http://www.dalsoft.co.uk/blog/index.php/2010/04/26/mvc-2-templates/

It's also useful if your Model has a Data annotation. For instance, if the property on the model is decorated with the EmailAddress data annotation, DisplayFor will render it as a mailto: link.

Tests

On the Tests class we will add an @XmlRootElement annotation. Doing this will let your JAXB implementation know that when a document starts with this element that it should instantiate this class. JAXB is configuration by exception, this means you only need to add annotations where your mapping differs from the default. Since the testData property differs from the default mapping we will use the @XmlElement annotation. You may find the following tutorial helpful: http://wiki.eclipse.org/EclipseLink/Examples/MOXy/GettingStarted

package forum11221136;

import javax.xml.bind.annotation.*;

@XmlRootElement
public class Tests {

    TestData testData;

    @XmlElement(name="test-data")
    public TestData getTestData() {
        return testData;
    }

    public void setTestData(TestData testData) {
        this.testData = testData;
    }

}

TestData

On this class I used the @XmlType annotation to specify the order in which the elements should be ordered in. I added a testData property that appeared to be missing. I also used an @XmlElement annotation for the same reason as in the Tests class.

package forum11221136;

import java.util.List;
import javax.xml.bind.annotation.*;

@XmlType(propOrder={"title", "book", "count", "testData"})
public class TestData {
    String title;
    String book;
    String count;
    List<TestData> testData;

    public String getTitle() {
        return title;
    }
    public void setTitle(String title) {
        this.title = title;
    }
    public String getBook() {
        return book;
    }
    public void setBook(String book) {
        this.book = book;
    }
    public String getCount() {
        return count;
    }
    public void setCount(String count) {
        this.count = count;
    }
    @XmlElement(name="test-data")
    public List<TestData> getTestData() {
        return testData;
    }
    public void setTestData(List<TestData> testData) {
        this.testData = testData;
    }
}

Demo

Below is an example of how to use the JAXB APIs to read (unmarshal) the XML and populate your domain model and then write (marshal) the result back to XML.

package forum11221136;

import java.io.File;
import javax.xml.bind.*;

public class Demo {

    public static void main(String[] args) throws Exception {
        JAXBContext jc = JAXBContext.newInstance(Tests.class);

        Unmarshaller unmarshaller = jc.createUnmarshaller();
        File xml = new File("src/forum11221136/input.xml");
        Tests tests = (Tests) unmarshaller.unmarshal(xml);

        Marshaller marshaller = jc.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        marshaller.marshal(tests, System.out);
    }

}

To call a .bat file within a .bat file, use

call foo.bat

(Yes, this is silly, it would make more sense if you could call it with foo.bat, like you could from the command prompt, but the correct way is to use call.)

duckduckgo.com doesn't ignore special characters, at least if the whole string is between ""

https://duckduckgo.com/?q=%22*222%23%22

I got similar problem

1: I tried to resolve with the answer which is marked correct above But I was not able to get the system setting which was quit amazing (On MacBook).

Most of the time such errors & issues comes because of replacing your grade file with other grade file ,due which gradel does not sync properly and while building the project issue comes . The issue is bascially related to non syncing for platform tools

Solution a: Go to File and then to Your project strucutre -modules -app-Properties -build tool version -click on options which is required for your project (if required build tool version not there chose any other). This will sync the grade file and now you can go to gradel and change target version and build tool version as per your requirement .you will prompted to download the required platform tool to sync it , now click on install tool version and let project to build

Solution b: Try Anuja Ans if you can get option of system setting and install platform tool.

I found this funny example in terms of loose coupling:

Source: Understanding dependency injection

Any application is composed of many objects that collaborate with each other to perform some useful stuff. Traditionally each object is responsible for obtaining its own references to the dependent objects (dependencies) it collaborate with. This leads to highly coupled classes and hard-to-test code.

For example, consider a Car object.

A Car depends on wheels, engine, fuel, battery, etc. to run. Traditionally we define the brand of such dependent objects along with the definition of the Car object.

Without Dependency Injection (DI):

class Car{
  private Wheel wh = new NepaliRubberWheel();
  private Battery bt = new ExcideBattery();

  //The rest
}

Here, the Car object is responsible for creating the dependent objects.

What if we want to change the type of its dependent object - say Wheel - after the initial NepaliRubberWheel() punctures? We need to recreate the Car object with its new dependency say ChineseRubberWheel(), but only the Car manufacturer can do that.

Then what does the Dependency Injection do for us...?

When using dependency injection, objects are given their dependencies at run time rather than compile time (car manufacturing time). So that we can now change the Wheel whenever we want. Here, the dependency (wheel) can be injected into Car at run time.

After using dependency injection:

Here, we are injecting the dependencies (Wheel and Battery) at runtime. Hence the term : Dependency Injection. We normally rely on DI frameworks such as Spring, Guice, Weld to create the dependencies and inject where needed.

class Car{
  private Wheel wh; // Inject an Instance of Wheel (dependency of car) at runtime
  private Battery bt; // Inject an Instance of Battery (dependency of car) at runtime
  Car(Wheel wh,Battery bt) {
      this.wh = wh;
      this.bt = bt;
  }
  //Or we can have setters
  void setWheel(Wheel wh) {
      this.wh = wh;
  }
}

The advantages are:

• decoupling the creation of object (in other word, separate usage from the creation of object)
• ability to replace dependencies (eg: Wheel, Battery) without changing the class that uses it(Car)
• promotes "Code to interface not to implementation" principle
• ability to create and use mock dependency during test (if we want to use a Mock of Wheel during test instead of a real instance.. we can create Mock Wheel object and let DI framework inject to Car)

Why nobody mentioned docker-compose! I 've just been using it for one week, and I cannot survive without it. All you need is writing a yml which takes only several minutes of studying, and then you are ready to go. It can boot images, containers (which are needed in so-called services) and let you review logs just like you use with docker native commands. Git it a try:

docker-compose up -d
docker-compose down --rmi 'local'

Before I used docker-compose, I wrote my own shell script, then I had to customize the script whenever needed especially when application architecture changed. Now I don't have to do this anymore, thanks to docker-compose.

Turns out there's no good way of doing this. The closest I came is adding "overflow:hidden;" to the div around the table and losing the text. The real solution seems to be to ditch table though. Using divs and relative positioning I was able to achieve the same effect, minus the legacy of <table>

2015 UPDATE: This is for those like me who want this answer. After 6 years, this works, thanks to all the contributors.

* { // this works for all but td
  word-wrap:break-word;
}

table { // this somehow makes it work for td
  table-layout:fixed;
  width:100%;
}

Given this binary tree:

Breadth First Traversal:
Traverse across each level from left to right.

"I'm G, my kids are D and I, my grandkids are B, E, H and K, their grandkids are A, C, F"

- Level 1: G 
- Level 2: D, I 
- Level 3: B, E, H, K 
- Level 4: A, C, F

Order Searched: G, D, I, B, E, H, K, A, C, F

Depth First Traversal:
Traversal is not done ACROSS entire levels at a time. Instead, traversal dives into the DEPTH (from root to leaf) of the tree first. However, it's a bit more complex than simply up and down.

There are three methods:

1) PREORDER: ROOT, LEFT, RIGHT.
You need to think of this as a recursive process:  
Grab the Root. (G)  
Then Check the Left. (It's a tree)  
Grab the Root of the Left. (D)  
Then Check the Left of D. (It's a tree)  
Grab the Root of the Left (B)  
Then Check the Left of B. (A)  
Check the Right of B. (C, and it's a leaf node. Finish B tree. Continue D tree)  
Check the Right of D. (It's a tree)  
Grab the Root. (E)  
Check the Left of E. (Nothing)  
Check the Right of E. (F, Finish D Tree. Move back to G Tree)  
Check the Right of G. (It's a tree)  
Grab the Root of I Tree. (I)  
Check the Left. (H, it's a leaf.)  
Check the Right. (K, it's a leaf. Finish G tree)  
DONE: G, D, B, A, C, E, F, I, H, K  

2) INORDER: LEFT, ROOT, RIGHT
Where the root is "in" or between the left and right child node.  
Check the Left of the G Tree. (It's a D Tree)  
Check the Left of the D Tree. (It's a B Tree)  
Check the Left of the B Tree. (A)  
Check the Root of the B Tree (B)  
Check the Right of the B Tree (C, finished B Tree!)  
Check the Right of the D Tree (It's a E Tree)  
Check the Left of the E Tree. (Nothing)  
Check the Right of the E Tree. (F, it's a leaf. Finish E Tree. Finish D Tree)...  
Onwards until...   
DONE: A, B, C, D, E, F, G, H, I, K  

3) POSTORDER: 
LEFT, RIGHT, ROOT  
DONE: A, C, B, F, E, D, H, K, I, G

Usage (aka, why do we care):
I really enjoyed this simple Quora explanation of the Depth First Traversal methods and how they are commonly used:
"In-Order Traversal will print values [in order for the BST (binary search tree)]"
"Pre-order traversal is used to create a copy of the [binary search tree]."
"Postorder traversal is used to delete the [binary search tree]."
https://www.quora.com/What-is-the-use-of-pre-order-and-post-order-traversal-of-binary-trees-in-computing

UILabel has a property lineBreakMode that you can set as per your requirement.

You want the SortedSet implementations, namely TreeSet.

You need to make the members in the for the form class either public or, if the service class is in the same assembly, internal. Windows controls' visibility can be controlled through their Modifiers properties.

Note that it's generally considered a bad practice to explicitly tie a service class to a UI class. Rather you should create good interfaces between the service class and the form class. That said, for learning or just generally messing around, the earth won't spin off its axis if you expose form members for service classes.

rp

you may consider this example

//Form1 Window
//EventHandler
Form1 frm2 = new Form1();
{
    frm2.Show(this); //this will show Form2
    frm1.Hide();  //this Form will hide
}

Structs "really" pure aren't supported in Java. E.g., C# supports struct definitions that represent values and can be allocated anytime.

In Java, the unique way to get an approximation of C++ structs

struct Token
{
    TokenType type;
    Stringp stringValue;
    double mathValue;
}

// Instantiation

{
    Token t = new Token;
}

without using a (static buffer or list) is doing something like

var type = /* TokenType */ ;
var stringValue = /* String */ ;
var mathValue = /* double */ ;

So, simply allocate variables or statically define them into a class.

If you want to call a different size for the button inline, you would probably do it like this:

<div class="button" style="width:60px;height:100px;">This is a button</div>

Or, a better way to have different sizes (say there will be 3 standard sizes for the button) would be to have classes just for size.

For example, you would call your button like this:

<div class="button small">This is a button</div>

And in your CSS

.button.small { width: 60px; height: 100px; }

and just create classes for each size you wish to have. That way you still have the perks of using a stylesheet in case say, you want to change the size of all the small buttons at once.

It will only push the new commits. It won't push the whole "master" branch. That is part of the benefit of working with a Distributed Version Control System. Git figures out what is actually needed and only pushes those pieces. If the branch you are on has been changed and pushed by someone else you'll need to pull first. Then push your commits.

You can use string.Format("{0:c}", value).

See also here:

• Currency Formatting in the .NET Framework

When you return value from server to jQuery's Ajax call you can also use the below code to indicate a server error:

return StatusCode(500, "My error");

Or

return StatusCode((int)HttpStatusCode.InternalServerError, "My error");

Or

Response.StatusCode = (int)HttpStatusCode.InternalServerError;
return Json(new { responseText = "my error" });

Codes other than Http Success codes (e.g. 200[OK]) will trigger the function in front of error: in client side (ajax).

you can have ajax call like:

$.ajax({
        type: "POST",
        url: "/General/ContactRequestPartial",
        data: {
            HashId: id
        },
       success: function (response)  {
            console.log("Custom message : " + response.responseText);
        }, //Is Called when Status Code is 200[OK] or other Http success code
        error: function (jqXHR, textStatus, errorThrown)  {
            console.log("Custom error : " + jqXHR.responseText + " Status: " + textStatus + " Http error:" + errorThrown);
        }, //Is Called when Status Code is 500[InternalServerError] or other Http Error code
        })

Additionally you can handle different HTTP errors from jQuery side like:

$.ajax({
        type: "POST",
        url: "/General/ContactRequestPartial",
        data: {
            HashId: id
        },
        statusCode: {
            500: function (jqXHR, textStatus, errorThrown)  {
                console.log("Custom error : " + jqXHR.responseText + " Status: " + textStatus + " Http error:" + errorThrown);
            501: function (jqXHR, textStatus, errorThrown)  {
                console.log("Custom error : " + jqXHR.responseText + " Status: " + textStatus + " Http error:" + errorThrown);
            }
        })

statusCode: is useful when you want to call different functions for different status codes that you return from server.

You can see list of different Http Status codes here:Wikipedia

Additional resources:

1. Returning Server-Side Errors from AJAX Calls
2. Returning a JsonResult within the Error function of JQuery Ajax
3. Handling Ajax errors with jQuery

I had this same problem - some users could pull from git and everything ran fine. Some would pull and get a very similar exception:

Could not load file or assembly '..., Version=..., Culture=neutral, PublicKeyToken=...' or one of its dependencies. The system cannot find the file specified.

In my particular case it was AjaxMin, so the actual error looked like this but the details don't matter:

Could not load file or assembly 'AjaxMin, Version=4.95.4924.12383, Culture=neutral, PublicKeyToken=21ef50ce11b5d80f' or one of its dependencies. The system cannot find the file specified.

It turned out to be a result of the following actions on a Solution:

1. NuGet Package Restore was turned on for the Solution.

2. A Project was added, and a Nuget package was installed into it (AjaxMin in this case).

3. The Project was moved to different folder in the Solution.

4. The Nuget package was updated to a newer version.

And slowly but surely this bug started showing up for some users.

The reason was the Solution-level packages/respositories.config kept the old Project reference, and now had a new, second entry for the moved Project. In other words it had this before the reorg:

  <repository path="..\Old\packages.config" />

And this after the reorg:

  <repository path="..\Old\packages.config" />
  <repository path="..\New\packages.config" />

So the first line now refers to a Project that, while on disk, is no longer part of my Solution.

With Nuget Package Restore on, both packages.config files were being read, which each pointed to their own list of Nuget packages and package versions. Until a Nuget package was updated to a newer version however, there weren't any conflicts.

Once a Nuget package was updated, however, only active Projects had their repositories listings updated. NuGet Package Restore chose to download just one version of the library - the first one it encountered in repositories.config, which was the older one. The compiler and IDE proceeded as though it chose the newer one. The result was a run-time exception saying the DLL was missing.

The answer obviously is to delete any lines from this file that referenced Projects that aren't in your Solution.

As per Xenon's comment to Anil Özselgin's answer, anonymous classes have been implemented in PHP 7.0, which is as close to nested classes as you'll get right now. Here are the relevant RFCs:

Nested Classes (status: withdrawn)

Anonymous Classes (status: implemented in PHP 7.0)

An example to the original post, this is what your code would look like:

<?php
    public class User {
        public $userid;
        public $username;
        private $password;

        public $profile;
        public $history;

        public function __construct() {
            $this->profile = new class {
                // Some code here for user profile
            }

            $this->history = new class {
                // Some code here for user history
            }
        }
    }
?>

This, though, comes with a very nasty caveat. If you use an IDE such as PHPStorm or NetBeans, and then add a method like this to the User class:

public function foo() {
  $this->profile->...
}

...bye bye auto-completion. This is the case even if you code to interfaces (the I in SOLID), using a pattern like this:

<?php
    public class User {
        public $profile;

        public function __construct() {
            $this->profile = new class implements UserProfileInterface {
                // Some code here for user profile
            }
        }
    }
?>

Unless your only calls to $this->profile are from the __construct() method (or whatever method $this->profile is defined in) then you won't get any sort of type hinting. Your property is essentially "hidden" to your IDE, making life very hard if you rely on your IDE for auto-completion, code smell sniffing, and refactoring.

To further work with array of maps, the followings could help:

@RequestMapping(value = "/process", method = RequestMethod.POST, headers = "Accept=application/json")
public void setLead(@RequestBody Collection<? extends Map<String, Object>> payload) throws Exception {

  List<Map<String,Object>> maps = new ArrayList<Map<String,Object>>();
  maps.addAll(payload);

}

    history.pushState(null, null, location.href);
    window.onpopstate = function () {
        history.go(1);
    };

There is not such a proper way to download all the things all together from JSFiddle but there is a hack way to do just that. Simply add "embedded/" or "embedded/result/" at the end of your JSFiddle URL!, and then you can save the whole page as an HTML file + the external libraries (if you wants).

enum NumberError: Error {
  case NegativeNumber(number: Int)
  case ZeroNumber
  case OddNumber(number: Int)
}

extension NumberError: CustomStringConvertible {
         var description: String {
         switch self {
             case .NegativeNumber(let number):
                 return "Negative number \(number) is Passed."
             case .OddNumber(let number):
                return "Odd number \(number) is Passed."
             case .ZeroNumber:
                return "Zero is Passed."
      }
   }
}

 func validateEvenNumber(_ number: Int) throws ->Int {
     if number == 0 {
        throw NumberError.ZeroNumber
     } else if number < 0 {
        throw NumberError.NegativeNumber(number: number)
     } else if number % 2 == 1 {
         throw NumberError.OddNumber(number: number)
     }
    return number
}

Now Validate Number :

 do {
     let number = try validateEvenNumber(0)
     print("Valid Even Number: \(number)")
  } catch let error as NumberError {
     print(error.description)
  }

Stevo is right, the meaning and usage of the dollar script sign (in Javascript and the jQuery platform, but not in PHP) is completely semantic. $ is a character that can be used as part of an identifier name. In addition, the dollar sign is perhaps not the most "weird" thing you can encounter in Javascript. Here are some examples of valid identifier names:

var _       = function() { alert("hello from _"); }
var \u0024  = function() { alert("hello from $ defined as u0024"); }
var Ø       = function() { alert("hello from Ø"); }
var $$$$$   = function() { alert("hello from $$$$$"); }

All of the examples above will work.

Try them.

What about x *= -1? I like its simplicity.

const char* text_char = "example of mbstowcs";
size_t length = strlen(text_char );

Example of usage "mbstowcs"

std::wstring text_wchar(length, L'#');

//#pragma warning (disable : 4996)
// Or add to the preprocessor: _CRT_SECURE_NO_WARNINGS
mbstowcs(&text_wchar[0], text_char , length);

Example of usage "mbstowcs_s"

Microsoft suggest to use "mbstowcs_s" instead of "mbstowcs".

Links:

Mbstowcs example

mbstowcs_s, _mbstowcs_s_l

wchar_t text_wchar[30];

mbstowcs_s(&length, text_wchar, text_char, length);

BitConverter class can be used to convert a byte[] to string.

var convertedString = BitConverter.ToString(byteAttay);

Documentation of BitConverter class can be fount on MSDN