Programs & Examples On #Signals

Let me first explain when and why OOMKiller get invoked?

Say you have 512 RAM + 1GB Swap memory. So in theory, your CPU has access to total of 1.5GB of virtual memory.

Now, for some time everything is running fine within 1.5GB of total memory. But all of sudden (or gradually) your system has started consuming more and more memory and it reached at a point around 95% of total memory used.

Now say any process has requested large chunck of memory from the kernel. Kernel check for the available memory and find that there is no way it can allocate your process more memory. So it will try to free some memory calling/invoking OOMKiller (http://linux-mm.org/OOM).

OOMKiller has its own algorithm to score the rank for every process. Typically which process uses more memory becomes the victim to be killed.

Where can I find logs of OOMKiller?

Typically in /var/log directory. Either /var/log/kern.log or /var/log/dmesg

Hope this will help you.

Some typical solutions:

1. Increase memory (not swap)
2. Find the memory leaks in your program and fix them
3. Restrict memory any process can consume (for example JVM memory can be restricted using JAVA_OPTS)
4. See the logs and google :)

Or you can put the terminal in raw mode, like this:

struct termios term;

term.c_iflag |= IGNBRK;
term.c_iflag &= ~(INLCR | ICRNL | IXON | IXOFF);
term.c_lflag &= ~(ICANON | ECHO | ECHOK | ECHOE | ECHONL | ISIG | IEXTEN);
term.c_cc[VMIN] = 1;
term.c_cc[VTIME] = 0;
tcsetattr(fileno(stdin), TCSANOW, &term);

Now it should be possible to read Ctrl+C keystrokes using fgetc(stdin). Beware using this though because you can't Ctrl+Z, Ctrl+Q, Ctrl+S, etc. like normally any more either.

Yet Another Snippet

Referred main as the main function and exit_gracefully as the CTRL + c handler

if __name__ == '__main__':
    try:
        main()
    except KeyboardInterrupt:
        pass
    finally:
        exit_gracefully()

You have to catch the SIGINT signal (we are talking POSIX right?)

See @Gab Royer´s answer for sigaction.

Example:

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

void my_handler(sig_t s){
           printf("Caught signal %d\n",s);
           exit(1); 

}

int main(int argc,char** argv)
{
   signal (SIGINT,my_handler);

   while(1);
   return 0;

}

I have done some research around this topic, which turned out to be more popular than I anticipated. KindDragon's reply was one of the pivotal points.

I wrote a longer blog post on the topic and created a working demo program, which demonstrates using this type of system to close a command line application in a couple of nice fashions. That post also lists external links that I used in my research.

In short, those demo programs do the following:

• Start a program with a visible window using .Net, hide with pinvoke, run for 6 seconds, show with pinvoke, stop with .Net.
• Start a program without a window using .Net, run for 6 seconds, stop by attaching console and issuing ConsoleCtrlEvent

Edit: The amended solution from KindDragon for those who are interested in the code here and now. If you plan to start other programs after stopping the first one, you should re-enable Ctrl-C handling, otherwise the next process will inherit the parent's disabled state and will not respond to Ctrl-C.

[DllImport("kernel32.dll", SetLastError = true)]
static extern bool AttachConsole(uint dwProcessId);

[DllImport("kernel32.dll", SetLastError = true, ExactSpelling = true)]
static extern bool FreeConsole();

[DllImport("kernel32.dll")]
static extern bool SetConsoleCtrlHandler(ConsoleCtrlDelegate HandlerRoutine, bool Add);

delegate bool ConsoleCtrlDelegate(CtrlTypes CtrlType);

// Enumerated type for the control messages sent to the handler routine
enum CtrlTypes : uint
{
  CTRL_C_EVENT = 0,
  CTRL_BREAK_EVENT,
  CTRL_CLOSE_EVENT,
  CTRL_LOGOFF_EVENT = 5,
  CTRL_SHUTDOWN_EVENT
}

[DllImport("kernel32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool GenerateConsoleCtrlEvent(CtrlTypes dwCtrlEvent, uint dwProcessGroupId);

public void StopProgram(Process proc)
{
  //This does not require the console window to be visible.
  if (AttachConsole((uint)proc.Id))
  {
    // Disable Ctrl-C handling for our program
    SetConsoleCtrlHandler(null, true); 
    GenerateConsoleCtrlEvent(CtrlTypes.CTRL_C_EVENT, 0);

    //Moved this command up on suggestion from Timothy Jannace (see comments below)
    FreeConsole();

    // Must wait here. If we don't and re-enable Ctrl-C
    // handling below too fast, we might terminate ourselves.
    proc.WaitForExit(2000);

    //Re-enable Ctrl-C handling or any subsequently started
    //programs will inherit the disabled state.
    SetConsoleCtrlHandler(null, false); 
  }
}

Also, plan for a contingency solution if AttachConsole() or the sent signal should fail, for instance sleeping then this:

if (!proc.HasExited)
{
  try
  {
    proc.Kill();
  }
  catch (InvalidOperationException e){}
}

Without any external tool you can simply accomplish this on Windows 7 or 8, by opening up the Resource monitor and on the CPU or Overview tab right clicking on the process and selecting Suspend Process. The Resource monitor can be started from the Performance tab of the Task manager.

They are signals that application developers use. The kernel shouldn't ever send these to a process. You can send them using kill(2) or using the utility kill(1).

If you intend to use signals for synchronization you might want to check real-time signals (there's more of them, they are queued, their delivery order is guaranteed etc).

This works:

package main

import (
    "fmt"
    "os"
    "os/signal"
    "syscall"
    "time" // or "runtime"
)

func cleanup() {
    fmt.Println("cleanup")
}

func main() {
    c := make(chan os.Signal)
    signal.Notify(c, os.Interrupt, syscall.SIGTERM)
    go func() {
        <-c
        cleanup()
        os.Exit(1)
    }()

    for {
        fmt.Println("sleeping...")
        time.Sleep(10 * time.Second) // or runtime.Gosched() or similar per @misterbee
    }
}

Or should I just catch the SIGPIPE with a handler and ignore it?

I believe that is right on. You want to know when the other end has closed their descriptor and that's what SIGPIPE tells you.

Sam

It's super easy to do this with python using psutil. Just install psutil with pip and then you have a full suite of process manipulation tools:

def killChildren(pid):
    parent = psutil.Process(pid)
    for child in parent.get_children(True):
        if child.is_running():
            child.terminate()

With regards to your second attempt, did you try using vertical align ? Either

<td valign="bottom">

or with css

vertical-align:bottom

Lambda Expression result

var storesList = context.Stores.Select(x => new { Value= x.name,Text= x.ID }).ToList();

Both do different things.

The first creates an object with automatic storage duration. It is created, used, and then goes out of scope when the current block ({ ... }) ends. It's the simplest way to create an object, and is just the same as when you write int x = 0;

The second creates an object with dynamic storage duration and allows two things:

• Fine control over the lifetime of the object, since it does not go out of scope automatically; you must destroy it explicitly using the keyword delete;

• Creating arrays with a size known only at runtime, since the object creation occurs at runtime. (I won't go into the specifics of allocating dynamic arrays here.)

Neither is preferred; it depends on what you're doing as to which is most appropriate.

Use the former unless you need to use the latter.

Your C++ book should cover this pretty well. If you don't have one, go no further until you have bought and read, several times, one of these.

Good luck.

Your original code is broken, as it deletes a char array that it did not new. In fact, nothing newd the C-style string; it came from a string literal. deleteing that is an error (albeit one that will not generate a compilation error, but instead unpredictable behaviour at runtime).

Usually an object should not have the responsibility of deleteing anything that it didn't itself new. This behaviour should be well-documented. In this case, the rule is being completely broken.

It's probably easiest to create your query object directly as:

  Test.find({
      $and: [
          { $or: [{a: 1}, {b: 1}] },
          { $or: [{c: 1}, {d: 1}] }
      ]
  }, function (err, results) {
      ...
  }

But you can also use the Query#and helper that's available in recent 3.x Mongoose releases:

  Test.find()
      .and([
          { $or: [{a: 1}, {b: 1}] },
          { $or: [{c: 1}, {d: 1}] }
      ])
      .exec(function (err, results) {
          ...
      });

SOLVED

http://jsfiddle.net/DJqPf/7/

.table-wrapper { 
    overflow-x:scroll;
    overflow-y:visible;
    width:250px;
    margin-left: 120px;
}
td, th {
    padding: 5px 20px;
    width: 100px;
}
th:first-child {
    position: fixed;
    left: 5px
}

UPDATE

$(function () {  _x000D_
  $('.table-wrapper tr').each(function () {_x000D_
    var tr = $(this),_x000D_
        h = 0;_x000D_
    tr.children().each(function () {_x000D_
      var td = $(this),_x000D_
          tdh = td.height();_x000D_
      if (tdh > h) h = tdh;_x000D_
    });_x000D_
    tr.css({height: h + 'px'});_x000D_
  });_x000D_
});

body {_x000D_
    position: relative;_x000D_
}_x000D_
.table-wrapper { _x000D_
    overflow-x:scroll;_x000D_
    overflow-y:visible;_x000D_
    width:200px;_x000D_
    margin-left: 120px;_x000D_
}_x000D_
_x000D_
_x000D_
td, th {_x000D_
    padding: 5px 20px;_x000D_
    width: 100px;_x000D_
}_x000D_
tbody tr {_x000D_
  _x000D_
}_x000D_
th:first-child {_x000D_
    position: absolute;_x000D_
    left: 5px_x000D_
}

<!DOCTYPE html>_x000D_
<html>_x000D_
<head>_x000D_
<script src="https://code.jquery.com/jquery-2.2.3.min.js"></script>_x000D_
  <meta charset="utf-8">_x000D_
  <title>JS Bin</title>_x000D_
</head>_x000D_
<body>_x000D_
<div>_x000D_
    <h1>SOME RANDOM TEXT</h1>_x000D_
</div>_x000D_
<div class="table-wrapper">_x000D_
    <table id="consumption-data" class="data">_x000D_
        <thead class="header">_x000D_
            <tr>_x000D_
                <th>Month</th>_x000D_
                <th>Item 1</th>_x000D_
                <th>Item 2</th>_x000D_
                <th>Item 3</th>_x000D_
                <th>Item 4</th>_x000D_
            </tr>_x000D_
        </thead>_x000D_
        <tbody class="results">_x000D_
            <tr>_x000D_
                <th>Jan is an awesome month</th>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>_x000D_
            </tr>_x000D_
            <tr>_x000D_
                <th>Feb</th>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>_x000D_
            </tr>_x000D_
            <tr>_x000D_
                <th>Mar</th>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>_x000D_
            </tr>_x000D_
            <tr>_x000D_
                <th>Apr</th>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>  _x000D_
            </tr>_x000D_
            <tr>    _x000D_
                <th>May</th>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>_x000D_
            </tr>_x000D_
            <tr>_x000D_
                <th>Jun</th>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>_x000D_
                <td>3163</td>_x000D_
            </tr>_x000D_
_x000D_
            <tr>_x000D_
                <th>...</th>_x000D_
                <td>...</td>_x000D_
                <td>...</td>_x000D_
                <td>...</td>_x000D_
                <td>...</td>_x000D_
            </tr>_x000D_
        </tbody>_x000D_
    </table>_x000D_
</div>_x000D_
_x000D_
<div>_x000D_
</div>_x000D_
</body>_x000D_
</html>

One of the alternatives is to write the mutliprocessing logging to a known file and register an atexit handler to join on those processes read it back on stderr; however, you won't get a real-time flow to the output messages on stderr that way.

Thanks for help. This is the solution: I created the subview and i add a gesture to remove it

@IBAction func infoView(sender: UIButton) {
    var testView: UIView = UIView(frame: CGRectMake(0, 0, 320, 568))
    testView.backgroundColor = UIColor.blueColor()
    testView.alpha = 0.5
    testView.tag = 100
    testView.userInteractionEnabled = true
    self.view.addSubview(testView)

    let aSelector : Selector = "removeSubview"
    let tapGesture = UITapGestureRecognizer(target:self, action: aSelector)
    testView.addGestureRecognizer(tapGesture)
}

func removeSubview(){
    println("Start remove sibview")
    if let viewWithTag = self.view.viewWithTag(100) {
        viewWithTag.removeFromSuperview()
    }else{
        println("No!")
    }
}

Update:

Swift 3+

@IBAction func infoView(sender: UIButton) {
    let testView: UIView = UIView(frame: CGRect(x: 0, y: 0, width: 320, height: 568))
    testView.backgroundColor = .blue
    testView.alpha = 0.5
    testView.tag = 100
    testView.isUserInteractionEnabled = true
    self.view.addSubview(testView)

    let aSelector : Selector = #selector(GasMapViewController.removeSubview)
    let tapGesture = UITapGestureRecognizer(target:self, action: aSelector)
    testView.addGestureRecognizer(tapGesture)
}

func removeSubview(){
    print("Start remove sibview")
    if let viewWithTag = self.view.viewWithTag(100) {
        viewWithTag.removeFromSuperview()
    }else{
        print("No!")
    }
}

void Fun(int* Pointer)   -- would be called as Fun( &somevariable )

would allow you to manipulate the content of what 'Pointer' points to by dereferencing it inside the Fun function i.e.

*Pointer = 1;

declaring it as above also allows you also to manipulate data beyond what it points to:

int foo[10] = {0};
Fun(foo);

in the function you can then do like *(Pointer + 1) = 12; setting the array's 2nd value.

void Fun(int& Pointer)  -- would be called Fun( somevariable )

you can modify what Pointer references to, however in this case you cannot access anything beyond what Pointer references to.

Simple and Complete Solution working for me. Supports ASP.NET MVC 4 and 5 (Supports ASP.NET 4.0, 4.5, and 4.5.1)

Step 1: Install NuGet Package by "Install-Package reCAPTCH.MVC"

Step 2: Add your Public and Private key to your web.config file in appsettings section

<appSettings>
    <add key="ReCaptchaPrivateKey" value=" -- PRIVATE_KEY -- " />
    <add key="ReCaptchaPublicKey" value=" -- PUBLIC KEY -- " />
</appSettings>  

You can create an API key pair for your site at https://www.google.com/recaptcha/intro/index.html and click on Get reCAPTCHA at top of the page

Step 3: Modify your form to include reCaptcha

@using reCAPTCHA.MVC
@using (Html.BeginForm())
{
    @Html.Recaptcha()
    @Html.ValidationMessage("ReCaptcha")
    <input type="submit" value="Register" />
}

Step 4: Implement the Controller Action that will handle the form submission and Captcha validation

[CaptchaValidator(
PrivateKey = "your private reCaptcha Google Key",
ErrorMessage = "Invalid input captcha.",
RequiredMessage = "The captcha field is required.")]
public ActionResult MyAction(myVM model)
{
    if (ModelState.IsValid) //this will take care of captcha
    {
    }
}

OR

public ActionResult MyAction(myVM model, bool captchaValid)
{
    if (captchaValid) //manually check for captchaValid 
    {
    }
}

It's not too hard. Firstly, take a look at FileReader Interface.

So, when the form is submitted, catch the submission process and

var file = document.getElementById('fileBox').files[0]; //Files[0] = 1st file
var reader = new FileReader();
reader.readAsText(file, 'UTF-8');
reader.onload = shipOff;
//reader.onloadstart = ...
//reader.onprogress = ... <-- Allows you to update a progress bar.
//reader.onabort = ...
//reader.onerror = ...
//reader.onloadend = ...


function shipOff(event) {
    var result = event.target.result;
    var fileName = document.getElementById('fileBox').files[0].name; //Should be 'picture.jpg'
    $.post('/myscript.php', { data: result, name: fileName }, continueSubmission);
}

Then, on the server side (i.e. myscript.php):

$data = $_POST['data'];
$fileName = $_POST['name'];
$serverFile = time().$fileName;
$fp = fopen('/uploads/'.$serverFile,'w'); //Prepends timestamp to prevent overwriting
fwrite($fp, $data);
fclose($fp);
$returnData = array( "serverFile" => $serverFile );
echo json_encode($returnData);

Or something like it. I may be mistaken (and if I am, please, correct me), but this should store the file as something like 1287916771myPicture.jpg in /uploads/ on your server, and respond with a JSON variable (to a continueSubmission() function) containing the fileName on the server.

Check out fwrite() and jQuery.post().

On the above page it details how to use readAsBinaryString(), readAsDataUrl(), and readAsArrayBuffer() for your other needs (e.g. images, videos, etc).

You can try this:

$ mysql -u root -p 
> grant all privileges on *.* to `root`@`%` identified by 'password'; 
> flush privileges;

Elaborating on the answer provided by Brian R. Bondy: Here's an example that shows why you can't simply size the output buffer to the number of wide characters in the source string:

#include <windows.h>
#include <stdio.h>
#include <wchar.h>
#include <string.h>

/* string consisting of several Asian characters */
wchar_t wcsString[] = L"\u9580\u961c\u9640\u963f\u963b\u9644";

int main() 
{

    size_t wcsChars = wcslen( wcsString);

    size_t sizeRequired = WideCharToMultiByte( 950, 0, wcsString, -1, 
                                               NULL, 0,  NULL, NULL);

    printf( "Wide chars in wcsString: %u\n", wcsChars);
    printf( "Bytes required for CP950 encoding (excluding NUL terminator): %u\n",
             sizeRequired-1);

    sizeRequired = WideCharToMultiByte( CP_UTF8, 0, wcsString, -1,
                                        NULL, 0,  NULL, NULL);
    printf( "Bytes required for UTF8 encoding (excluding NUL terminator): %u\n",
             sizeRequired-1);
}

And the output:

Wide chars in wcsString: 6
Bytes required for CP950 encoding (excluding NUL terminator): 12
Bytes required for UTF8 encoding (excluding NUL terminator): 18

Hide Scrollbars

step 1:

step 2:

 overflow: hidden; /* Hide scrollbars */

now go to add file .css in project and include file

to wait until the click itself is complete (ie to resolve the Promise), use await keyword

it('test case 1', async () => {
  await login.submit.click();
})

This will stop the command queue until the click (sendKeys, sleep or any other command) is finished

If you're lucky and you're on angular page that is built well and doesn't have micro and macro tasks pending then Protractor should wait by itself until the page is ready. But sometimes you need to handle waiting yourself, for example when logging in through a page that is not Angular (read how to find out if page has pending tasks and how to work with non angular pages)

In the case you're handling the waiting manually, browser.wait is the way to go. Just pass a function to it that would have a condition which to wait for. For example wait until there is no loading animation on the page

let $animation = $$('.loading');

await browser.wait(
  async () => (await animation.count()) === 0, // function; if returns true it stops waiting; can wait for anything in the world if you get creative with it
  5000, // timeout
  `message on timeout`
);

Make sure to use await

I, too, have need for this! My situation involves comparing actuals with budget for cost centers, where expenses may have been mis-applied and therefore need to be re-allocated to the correct cost center so as to match how they were budgeted. It is very time consuming to try and scan row-by-row to see if each expense item has been correctly allocated. I decided that I should apply conditional formatting to highlight any cells where the actuals did not match the budget. I set up the conditional formatting to change the background color if the actual amount under the cost center did not match the budgeted amount.

Here's what I did:

Start in cell A1 (or the first cell you want to have the formatting). Open the Conditional Formatting dialogue box and select Apply formatting based on a formula. Then, I wrote a formula to compare one cell to another to see if they match:

=A1=A50

If the contents of cells A1 and A50 are equal, the conditional formatting will be applied. NOTICE: no $$, so the cell references are RELATIVE! Therefore, you can copy the formula from cell A1 and PasteSpecial (format). If you only click on the cells that you reference as you write your conditional formatting formula, the cells are by default locked, so then you wouldn't be able to apply them anywhere else (you would have to write out a new rule for each line- YUK!)

What is really cool about this is that if you insert rows under the conditionally formatted cell, the conditional formatting will be applied to the inserted rows as well!

Something else you could also do with this: Use ISBLANK if the amounts are not going to be exact matches, but you want to see if there are expenses showing up in columns where there are no budgeted amounts (i.e., BLANK) .

This has been a real time-saver for me. Give it a try and enjoy!

true, this option is not available in any version of MS ppt.Now the solution is that You put your different sized slide in other file and put a hyperlink in first file.

Try the following:

color.gradient <- function(x, colors=c("red","yellow","green"), colsteps=100) {
  return( colorRampPalette(colors) (colsteps) [ findInterval(x, seq(min(x),max(x), length.out=colsteps)) ] )
}
x <- c((1:100)^2, (100:1)^2)
plot(x,col=color.gradient(x), pch=19,cex=2)

If you want something that works well on windows there is a package called WinFoldersJava which wraps the native call to get the 'special' directories on Windows. We use it frequently and it works well.

1.3.1 fixed it.

Just update your extension and you should be good to go

To Fix The "Missing "server" JVM at C:\Program Files\Java\jre7\bin\server\jvm­­.dll, please install or use the JRE or JDK that contains these missing components.

Follow these steps:

Go to oracle.com and install Java JRE7 (Check if Java 6 is not installed already)

After that, go to C:/Program files/java/jre7/bin

Here, create an folder called Server

Now go into the C:/Program files/java/jre7/bin/client folder

Copy all the data in this folder into the new C:/Program files/java/jre7/bin/Server folder

Yes, there are a few of them.

• ReDoc [Article on swagger.io] [GitHub] [demo] - Reinvented OpenAPI/Swagger-generated API Reference Documentation (I'm the author)

• OpenAPI GUI [GitHub] [demo] - GUI / visual editor for creating and editing OpenApi / Swagger definitions (has OpenAPI 3 support)

• Responsive Fork of SwaggerUI [GitHub] [demo]

• SwaggerUI-Angular [GitHub] [demo] - An angularJS implementation of Swagger UI

• angular-swagger-ui-material [GitHub] [demo] - Material Design template for angular-swager-ui

Hosted solutions that support swagger:

• Apiary - can import from swagger
• Readme.io - can import from swagger
• Lucybot console - supports swagger natively
• Postman - can import from swagger
• Stoplight - supports swagger natively - editing and reading

Check the following articles for more details:

• Ultimate Guide to 30+ API Documentation Solutions
• Turning Contracts into Beautiful Documentation (focused mainly on Swagger)
• An evaluation of auto-generated REST API Documentation UIs (focused mainly on Swagger)
• Free and Open Source API Documentation Tools

The best way to Install new themes in any Eclipse platform is to use the Eclipse Marketplace.

1.Go to Help > Eclipse Marketplace

2.Search for "Color Themes"

3.Install and Restart

4.Go to Window > Preferences > General > Appearance > Color Themes

5.Select anyone and Apply. Restart.

I wanted "key" & "value" pair of a first dictionary item. I used the following code.

 key, val = next(iter(my_dict.items()))

from PIL import Image

image = Image.open('File.jpg')
image.show()

jQuery: you think a lot about 'QUERYing the DOM' for DOM elements and doing something.

AngularJS: THE model is the truth, and you always think from that ANGLE.

For example, when you get data from THE server which you intend to display in some format in the DOM, in jQuery, you need to '1. FIND' where in the DOM you want to place this data, the '2. UPDATE/APPEND' it there by creating a new node or just setting its innerHTML. Then when you want to update this view, you then '3. FIND' the location and '4. UPDATE'. This cycle of find and update all done within the same context of getting and formatting data from server is gone in AngularJS.

With AngularJS you have your model (JavaScript objects you are already used to) and the value of the model tells you about the model (obviously) and about the view, and an operation on the model automatically propagates to the view, so you don't have to think about it. You will find yourself in AngularJS no longer finding things in the DOM.

To put in another way, in jQuery, you need to think about CSS selectors, that is, where is the div or td that has a class or attribute, etc., so that I can get their HTML or color or value, but in AngularJS, you will find yourself thinking like this: what model am I dealing with, I will set the model's value to true. You are not bothering yourself of whether the view reflecting this value is a checked box or resides in a td element (details you would have often needed to think about in jQuery).

And with DOM manipulation in AngularJS, you find yourself adding directives and filters, which you can think of as valid HTML extensions.

One more thing you will experience in AngularJS: in jQuery you call the jQuery functions a lot, in AngularJS, AngularJS will call your functions, so AngularJS will 'tell you how to do things', but the benefits are worth it, so learning AngularJS usually means learning what AngularJS wants or the way AngularJS requires that you present your functions and it will call it accordingly. This is one of the things that makes AngularJS a framework rather than a library.

Simply changing

public int compare(Dog d, Dog d1) {
  return d.age - d1.age;
}

to

public int compare(Dog d, Dog d1) {
  return d1.age - d.age;
}

should sort them in the reverse order of age if that is what you are looking for.

Update:

@Arian is right in his comments, one of the accepted ways of declaring a comparator for a dog would be where you declare it as a public static final field in the class itself.

class Dog implements Comparable<Dog> {
    private String name;
    private int age;

    public static final Comparator<Dog> DESCENDING_COMPARATOR = new Comparator<Dog>() {
        // Overriding the compare method to sort the age
        public int compare(Dog d, Dog d1) {
            return d.age - d1.age;
        }
    };

    Dog(String n, int a) {
        name = n;
        age = a;
    }

    public String getDogName() {
        return name;
    }

    public int getDogAge() {
        return age;
    }

    // Overriding the compareTo method
    public int compareTo(Dog d) {
        return (this.name).compareTo(d.name);
    }

}

You could then use it any where in your code where you would like to compare dogs as follows:

// Sorts the array list using comparator
Collections.sort(list, Dog.DESCENDING_COMPARATOR);

Another important thing to remember when implementing Comparable is that it is important that compareTo performs consistently with equals. Although it is not required, failing to do so could result in strange behaviour on some collections such as some implementations of Sets. See this post for more information on sound principles of implementing compareTo.

Update 2: Chris is right, this code is susceptible to overflows for large negative values of age. The correct way to implement this in Java 7 and up would be Integer.compare(d.age, d1.age) instead of d.age - d1.age.

Update 3: With Java 8, your Comparator could be written a lot more succinctly as:

public static final Comparator<Dog> DESCENDING_COMPARATOR = 
    Comparator.comparing(Dog::getDogAge).reversed();

The syntax for Collections.sort stays the same, but compare can be written as

public int compare(Dog d, Dog d1) {
    return DESCENDING_COMPARATOR.compare(d, d1);
}

Use chocolatey in PowerShell

choco install ruby -y
refreshenv
gem install bundler

For a typical XAMPP install on windows you probably have the php_sockets.dll in your C:\xampp\php\ext directory. All you got to do is go to php.ini in the C:\xampp\php directory and change the ;extension=php_sockets.dll to extension=php_sockets.dll.

def repeat_char_rows_cols(char, rows, cols):
    return (char*cols + '\n')*rows

>>> print(repeat_char_rows_cols('@', 4, 2))
@@
@@
@@
@@

You do not have to trigger a click event, you can do it with fancybox type as ajax.  

$.fancybox.open({
      href: "http://........",
      type: 'ajax'
});

process.cwd() returns the current working directory,

i.e. the directory from which you invoked the node command.

__dirname returns the directory name of the directory containing the JavaScript source code file

There's a similar post here: http://techpad.co.uk/content.php?sid=137 which explains how to do it.

function file_get_contents_proxy($url,$proxy){

    // Create context stream
    $context_array = array('http'=>array('proxy'=>$proxy,'request_fulluri'=>true));
    $context = stream_context_create($context_array);

    // Use context stream with file_get_contents
    $data = file_get_contents($url,false,$context);

    // Return data via proxy
    return $data;

}

Change the port 80 to port 8080 and restart all services and access like localhost:8080/

It will work fine.

OPTIMIZE TABLE works fine with InnoDB engine according to the official support article : http://dev.mysql.com/doc/refman/5.5/en/optimize-table.html

You'll notice that optimize InnoDB tables will rebuild table structure and update index statistics (something like ALTER TABLE).

Keep in mind that this message could be an informational mention only and the very important information is the status of your query : just OK !

mysql> OPTIMIZE TABLE foo;
+----------+----------+----------+-------------------------------------------------------------------+
| Table    | Op       | Msg_type | Msg_text                                                          |
+----------+----------+----------+-------------------------------------------------------------------+
| test.foo | optimize | note     | Table does not support optimize, doing recreate + analyze instead |
| test.foo | optimize | status   | OK                                                                |
+----------+----------+----------+-------------------------------------------------------------------+

Hey If you want to print selected area or div ,Try This.

<style type="text/css">
@media print
{
body * { visibility: hidden; }
.div2 * { visibility: visible; }
.div2 { position: absolute; top: 40px; left: 30px; }
}
</style>

Hope it helps you

Let's not use NOW() as you're losing any query caching or optimization because the query is different every time. See the list of functions you should not use in the MySQL documentation.

In the code below, let's assume this table is growing with time. New stuff is added and you want to show just the stuff in the last 30 days. This is the most common case.

Note that the date has been added as a string. It is better to add the date in this way, from your calling code, than to use the NOW() function as it kills your caching.

SELECT * FROM table WHERE exec_datetime >= DATE_SUB('2012-06-12', INTERVAL 30 DAY);

You can use BETWEEN if you really just want stuff from this very second to 30 days before this very second, but that's not a common use case in my experience, so I hope the simplified query can serve you well.

I use colordiff.

On Mac OS X, install it with

$ sudo port install colordiff

On Linux is possibly apt get install colordiff or something like that, depending on your distro.

Then:

$ git difftool --extcmd="colordiff -ydw" HEAD^ HEAD

Or create an alias

$ git alias diffy "difftool --extcmd=\"colordiff -ydw\""

Then you can use it

$ git diffy HEAD^ HEAD

I called it "diffy" because diff -y is the side-by-side diff in unix. Colordiff also adds colors, that are nicer. In the option -ydw, the y is for the side-by-side, the w is to ignore whitespaces, and the d is to produce the minimal diff (usually you get a better result as diff)

When the directory is deleted, the inode for that directory (and the inodes for its contents) are recycled. The pointer your shell has to that directory's inode (and its contents's inodes) are now no longer valid. When the directory is restored from backup, the old inodes are not (necessarily) reused; the directory and its contents are stored on random inodes. The only thing that stays the same is that the parent directory reuses the same name for the restored directory (because you told it to).

Now if you attempt to access the contents of the directory that your original shell is still pointing to, it communicates that request to the file system as a request for the original inode, which has since been recycled (and may even be in use for something entirely different now). So you get a stale file handle message because you asked for some nonexistent data.

When you perform a cd operation, the shell reevaluates the inode location of whatever destination you give it. Now that your shell knows the new inode for the directory (and the new inodes for its contents), future requests for its contents will be valid.

I like and learned a lot from Lasse V. Karlsen. I modified it into the following example, which highlights pretty well the difference between shallow dictionary copies and deep copies:

    import copy

    my_dict = {'a': [1, 2, 3], 'b': [4, 5, 6]}
    my_copy = copy.copy(my_dict)
    my_deepcopy = copy.deepcopy(my_dict)

Now if you change

    my_dict['a'][2] = 7

and do

    print("my_copy a[2]: ",my_copy['a'][2],",whereas my_deepcopy a[2]: ", my_deepcopy['a'][2])

you get

    >> my_copy a[2]:  7 ,whereas my_deepcopy a[2]:  3

In my case, I had to change the cell padding of an element that contained an input checkbox for a table that's being dynamically rendered with DataTables:

<td class="dt-center">
    <input class="a" name="constCheck" type="checkbox" checked="">
</td>

After implementing the following line code within the initComplete function I was able to produce the correct padding, which fixed the rows from being displayed with an abnormally large height

 $('tbody td:has(input.a)').css('padding', '0px');

Now, you can see that the correct styles are being applied to the parent element:

<td class=" dt-center" style="padding: 0px;">
    <input class="a" name="constCheck" type="checkbox" checked="">
</td>

Essentially, this answer is an extension of @KP's answer, but the more collaboration of implementing this the better. In summation, I hope this helps someone else because it works! Lastly, thank you so much @KP for leading me in the right direction!

You can't do it in HTML. You can in CSS. Create a new CSS file and write:

p {
 font-size: (some number);
}

If that doesn't work make sure you don't have any "pre" tags, which make your code a bit smaller.

Try this:

using System.Data.Linq;
var result = from i in list
             where i.age > 45
             select i;

Using lambda expression please use this Statement:

var result = list.where(i => i.age > 45);

I realize this is an old question but it was the first result on Google when I searched and I think I have found a better solution than the highest ranked suggestion and what the OP chose to do.

#nav li ul:not(.stupidIE) { color:red }

So technically this is the opposite of what the OP wanted, but that just means you have to apply the rule you want for IE8 first and then apply this for everything else. Of course you can put anything inside the () as long as it is valid css that doesn't actually select anything. IE8 chokes on this line and doesn't apply it, but previous IEs (ok I only checked IE7, I have stopped caring about IE6), just ignore the :not() and do apply the declarations. And of course every other browser (I tested Safari 5, Opera 10.5, Firefox 3.6) applies that css as you would expect.

So this solution, I guess like any other pure CSS solution would assume that if the IE developers add support for the :not selector then they will also fix what ever discrepancy was causing you to target IE8.

Since UTF8 encoding doesn't play well with Excel. You can convert the data to another encoding type using iconv().

e.g.

iconv('UTF-8', 'ISO-8859-1//TRANSLIT', $value),

To avoid saying everything Mark Ingram already said a little tip for using namespaces:

Avoid the "using namespace" directive in header files - this opens the namespace for all parts of the program which import this header file. In implementation files (*.cpp) this is normally no big problem - altough I prefer to use the "using namespace" directive on the function level.

I think namespaces are mostly used to avoid naming conflicts - not necessarily to organize your code structure. I'd organize C++ programs mainly with header files / the file structure.

Sometimes namespaces are used in bigger C++ projects to hide implementation details.

Additional note to the using directive: Some people prefer using "using" just for single elements:

using std::cout;  
using std::endl;

You need to define height of ul or your div and set overflow equals to auto as below:

<ul style="width: 300px; height: 200px; overflow: auto">
  <li>text</li>
  <li>text</li>

inside your onClickListener.onClick, put

getFragmentManager().beginTransaction().replace(R.id.container, new tasks()).commit();

In another word, in your mycontacts.class

public class mycontacts extends Fragment {

    public mycontacts() {
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        final View v = super.getView(position, convertView, parent);
        ImageView purple = (ImageView) v.findViewById(R.id.imageView1);
        purple.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                getFragmentManager()
                        .beginTransaction()
                        .replace(R.id.container, new tasks())
                        .commit();
            }
        });
        return view;

    }
}

now, remember R.id.container is the container (FrameLayout or other layouts) for the activity that calls the fragment

You can do that in this way:

ORDER BY `products`.`product_category_id` DESC ,`naam` ASC

Have a look at ORDER BY Optimization

Based on Piotr Migdals response I want to give an alternate solution enabling the possibility for a vector of strings:

myVectorOfStrings <- c("foo", "bar")
matchExpression <- paste(myVectorOfStrings, collapse = "|")
# [1] "foo|bar"
df %>% select(matches(matchExpression))

Making use of the regex OR operator (|)

ATTENTION: If you really have a plain vector of column names (and do not need the power of RegExpression), please see the comment below this answer (since it's the cleaner solution).

<CheckBox
      android:id="@+id/checkBox1"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="Fees Paid Rs100:"
      android:textColor="#276ca4"
      android:checked="false"
      android:onClick="checkbox_clicked" />

Main Activity from here

   public class RegistA extends Activity {
CheckBox fee_checkbox;
 @Override
    protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_regist);
 fee_checkbox = (CheckBox)findViewById(R.id.checkBox1);// Fee Payment Check box
}

checkbox clicked

     public void checkbox_clicked(View v)
     {

         if(fee_checkbox.isChecked())
         {
            // true,do the task 

         }
         else
         {

         }

     }

Not sure what your asking!

However

SELECT  GETDATE()

Will get you the current date and time

SELECT  DATEADD(dd, 0, DATEDIFF(dd, 0, GETDATE()))

Will get you just the date with time set to 00:00:00

exec does not execute a command in your shell

try

Process p = Runtime.getRuntime().exec(new String[]{"csh","-c","cat /home/narek/pk.txt"});

instead.

EDIT:: I don't have csh on my system so I used bash instead. The following worked for me

Process p = Runtime.getRuntime().exec(new String[]{"bash","-c","ls /home/XXX"});

You can use find_all in the following way to find every a element that has an href attribute, and print each one:

from BeautifulSoup import BeautifulSoup

html = '''<a href="some_url">next</a>
<span class="class"><a href="another_url">later</a></span>'''

soup = BeautifulSoup(html)

for a in soup.find_all('a', href=True):
    print "Found the URL:", a['href']

The output would be:

Found the URL: some_url
Found the URL: another_url

Note that if you're using an older version of BeautifulSoup (before version 4) the name of this method is findAll. In version 4, BeautifulSoup's method names were changed to be PEP 8 compliant, so you should use find_all instead.

If you want all tags with an href, you can omit the name parameter:

href_tags = soup.find_all(href=True)

You just need the jQuery UI effects-core (13KB), to enable the duration of the adding (just like Omar Tariq it pointed out)

If you are looking for the amount of time that the associated thread has spent running code inside the application.
You can use ProcessThread.UserProcessorTime Property which you can get under System.Diagnostics namespace.

TimeSpan startTime= Process.GetCurrentProcess().Threads[i].UserProcessorTime; // i being your thread number, make it 0 for main
//Write your function here
TimeSpan duration = Process.GetCurrentProcess().Threads[i].UserProcessorTime.Subtract(startTime);

Console.WriteLine($"Time caluclated by CurrentProcess method: {duration.TotalSeconds}"); // This syntax works only with C# 6.0 and above

Note: If you are using multi threads, you can calculate the time of each thread individually and sum it up for calculating the total duration.

Use the command line parameter -XX:MaxPermSize=128m for a Sun JVM (obviously substituting 128 for whatever size you need).

If you don't want to SELECT SLEEP(1);, you can also DO SLEEP(1); It's useful for those situations in procedures where you don't want to see output.

e.g.

SELECT ...
DO SLEEP(5);
SELECT ...

Random random = new Random();
double percent = 10.0; //10.0%
if (random.nextDouble() * 100D < percent) {
    //do
}

If merging branch A into branch B reports "Already up to date", reverse is not always true. It is true only if branch B is descendant of branch A, otherwise branch B simply can have changes that aren't in A.

Example:

1. You create branches A and B off master
2. You make some changes in master and merge these changes only into branch B (not updating or forgetting to update branch A).
3. You make some changes in branch A and merge A to B.

At this point merging A to B reports "Already up to date" but the branches are different because branch B has updates from master while branch A does not.

The simplest command which can give you what you need but some other good info too is:

hostnamectl

Enable mod_headers in Apache2 to be able to use Header directive :

a2enmod headers

As of now (5.2.20) bug is fixed. The only action required is to download the latest version and bridge mod should function normally.

host or hostname would be the i.p address of the remote server, or if you can access it over the network by computer name, that should work to.

I think best option is like same:

foreach ($lists as $key=>$value) {
    echo $key+1;
}

it is easy and normally

Things change. The escape/unescape methods have been deprecated.

You can URI encode the string before you Base64-encode it. Note that this does't produce Base64-encoded UTF8, but rather Base64-encoded URL-encoded data. Both sides must agree on the same encoding.

See working example here: http://codepen.io/anon/pen/PZgbPW

// encode string
var base64 = window.btoa(encodeURIComponent('€ ?? æøåÆØÅ'));
// decode string
var str = decodeURIComponent(window.atob(tmp));
// str is now === '€ ?? æøåÆØÅ'

For OP's problem a third party library such as js-base64 should solve the problem.

Linux dotnet core doesn't support namedpipes!

Try TcpListener if you deploy to Linux

This NamedPipe Client/Server code round trips a byte to a server.

• Client writes byte
• Server reads byte
• Server writes byte
• Client reads byte

DotNet Core 2.0 Server ConsoleApp

using System;
using System.IO.Pipes;
using System.Threading.Tasks;

namespace Server
{
    class Program
    {
        static void Main(string[] args)
        {
            var server = new NamedPipeServerStream("A", PipeDirection.InOut);
            server.WaitForConnection();

            for (int i =0; i < 10000; i++)
            {
                var b = new byte[1];
                server.Read(b, 0, 1); 
                Console.WriteLine("Read Byte:" + b[0]);
                server.Write(b, 0, 1);
            }
        }
    }
}

DotNet Core 2.0 Client ConsoleApp

using System;
using System.IO.Pipes;
using System.Threading.Tasks;

namespace Client
{
    class Program
    {
        public static int threadcounter = 1;
        public static NamedPipeClientStream client;

        static void Main(string[] args)
        {
            client = new NamedPipeClientStream(".", "A", PipeDirection.InOut, PipeOptions.Asynchronous);
            client.Connect();

            var t1 = new System.Threading.Thread(StartSend);
            var t2 = new System.Threading.Thread(StartSend);

            t1.Start();
            t2.Start(); 
        }

        public static void StartSend()
        {
            int thisThread = threadcounter;
            threadcounter++;

            StartReadingAsync(client);

            for (int i = 0; i < 10000; i++)
            {
                var buf = new byte[1];
                buf[0] = (byte)i;
                client.WriteAsync(buf, 0, 1);

                Console.WriteLine($@"Thread{thisThread} Wrote: {buf[0]}");
            }
        }

        public static async Task StartReadingAsync(NamedPipeClientStream pipe)
        {
            var bufferLength = 1; 
            byte[] pBuffer = new byte[bufferLength];

            await pipe.ReadAsync(pBuffer, 0, bufferLength).ContinueWith(async c =>
            {
                Console.WriteLine($@"read data {pBuffer[0]}");
                await StartReadingAsync(pipe); // read the next data <-- 
            });
        }
    }
}

If you want to disable a single transition property, you can do:

transition: color 0s;

(since a zero second transition is the same as no transition.)

Don't hesitate to watch heap to see memory leaks in event handlers keeping a reference to the element with a closure and the element keeping a reference to the event handler.

Garbage collector do not like circular references.

Usual memory leak case: admit an object has a ref to an element. That element has a ref to the handler. And the handler has a ref to the object. The object has refs to a lot of other objects. This object was part of a collection you think you have thrown away by unreferencing it from your collection. => the whole object and all it refers will remain in memory till page exit. => you have to think about a complete killing method for your object class or trust a mvc framework for example.

Moreover, don't hesitate to use the Retaining tree part of Chrome dev tools.

Tried this? Should work in both .htaccess, httpd.conf and in a VirtualHost (usually placed in httpd-vhosts.conf if you have included it from your httpd.conf)

<filesMatch "\.(html|htm|js|css)$">
  FileETag None
  <ifModule mod_headers.c>
     Header unset ETag
     Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate"
     Header set Pragma "no-cache"
     Header set Expires "Wed, 11 Jan 1984 05:00:00 GMT"
  </ifModule>
</filesMatch>

100% Prevent Files from being cached

This is similar to how google ads employ the header Cache-Control: private, x-gzip-ok="" > to prevent caching of ads by proxies and clients.

From http://www.askapache.com/htaccess/using-http-headers-with-htaccess.html

And optionally add the extension for the template files you are retrieving if you are using an extension other than .html for those.

There is nothing wrong with returning a void @ResponseBody and you should for POST requests.

Use HTTP status codes to define errors within exception handler routines instead as others are mentioning success status. A normal method as you have will return a response code of 200 which is what you want, any exception handler can then return an error object and a different code (i.e. 500).

Just write

adb -e reboot

and be happy with adb))

and if you want this anywhere... to be a helper on DataTable this assumes you want to capture the output to Log4Net but the excellent starting example I worked against just dumps to the console... This one also has editable column width variable nMaxColWidth - ultimately I will pass that from whatever context...

public static class Helpers
    {
        private static ILog Log = Global.Log ?? LogManager.GetLogger("MyLogger");
        /// <summary>
        /// Dump contents of a DataTable to the log
        /// </summary>
        /// <param name="table"></param>
        public static void DebugTable(this DataTable table)
        {
            Log?.Debug("--- DebugTable(" + table.TableName + ") ---");
            var nRows = table.Rows.Count;
            var nCols = table.Columns.Count;
            var nMaxColWidth = 32;

            // Column Headers

            var sColFormat = @"{0,-" + nMaxColWidth + @"} | ";
            var sLogMessage = string.Empty;
            for (var i = 0; i < table.Columns.Count; i++)
            {
                sLogMessage = string.Concat(sLogMessage, string.Format(sColFormat, table.Columns[i].ToString()));
            }
            //Debug.Write(Environment.NewLine);
            Log?.Debug(sLogMessage);

            var sUnderScore = string.Empty;
            var sDashes = string.Empty;
            for (var j = 0; j <= nMaxColWidth; j++)
            {
                sDashes = sDashes + "-";
            }


            for (var i = 0; i < table.Columns.Count; i++)
            {
                sUnderScore = string.Concat(sUnderScore, sDashes + "|-");
            }

            sUnderScore = sUnderScore.TrimEnd('-');

            //Debug.Write(Environment.NewLine);
            Log?.Debug(sUnderScore);

            // Data
            for (var i = 0; i < nRows; i++)
            {
                DataRow row = table.Rows[i];
                //Debug.WriteLine("{0} {1} ", row[0], row[1]);
                sLogMessage = string.Empty;

                for (var j = 0; j < nCols; j++)
                {
                    string s = row[j].ToString();
                    if (s.Length > nMaxColWidth) s = s.Substring(0, nMaxColWidth - 3) + "...";
                    sLogMessage = string.Concat(sLogMessage, string.Format(sColFormat, s));
                }

                Log?.Debug(sLogMessage);
                //Debug.Write(Environment.NewLine);
            }           
            Log?.Debug(sUnderScore);
        }
}

Everyone here is using really long-handed regular expressions but actually understanding the regex of POSIX will allow you to use a small grep command like this for printing IP addresses.

grep -Eo "(([0-9]{1,3})\.){3}([0-9]{1,3})"

(Side note) This doesn't ignore invalid IPs but it is very simple.

My method of doing this has been to create an inherited class that explicitly implements IDisposable. This is useful for folks who use the gui to add the service reference ( Add Service Reference ). I just drop this class in the project making the service reference and use it instead of the default client:

using System;
using System.ServiceModel;
using MyApp.MyService; // The name you gave the service namespace

namespace MyApp.Helpers.Services
{
    public class MyServiceClientSafe : MyServiceClient, IDisposable
    {
        void IDisposable.Dispose()
        {
            if (State == CommunicationState.Faulted)
            {
                Abort();
            }
            else if (State != CommunicationState.Closed)
            {
                Close();
            }

            // Further error checks and disposal logic as desired..
        }
    }
}

Note: This is just a simple implementation of dispose, you can implement more complex dispose logic if you like.

You can then replace all your calls made with the regular service client with the safe clients, like this:

using (MyServiceClientSafe client = new MyServiceClientSafe())
{
    var result = client.MyServiceMethod();
}

I like this solution as it does not require me to have access to the Interface definitions and I can use the using statement as I would expect while allowing my code to look more or less the same.

You will still need to handle the exceptions which can be thrown as pointed out in other comments in this thread.

I've found that for my use-cases I don't always want the entire outerHTML. Many nodes just have too many children to show.

Here's a function (minimally tested in Chrome):

/**
 * Stringifies a DOM node.
 * @param {Object} el - A DOM node.
 * @param {Number} truncate - How much to truncate innerHTML of element.
 * @returns {String} - A stringified node with attributes
 *                     retained.
 */
function stringifyEl(el, truncate) {
    var truncateLen = truncate || 50;
    var outerHTML = el.outerHTML;
    var ret = outerHTML;
    ret = ret.substring(0, truncateLen);

    // If we've truncated, add an elipsis.
    if (outerHTML.length > truncateLen) {
      ret += "...";
    }
    return ret;
}

https://gist.github.com/kahunacohen/467f5cc259b5d4a85eb201518dcb15ec

Breakpoints and especially conditional breakpoints are your friends.

Also you can write small assert like function which will check values and throw exceptions if needed in debug version of site (some variable is set to true or url has some parameter)

Comparison of execution time of bubble sort and selection sort I have a program which compares the execution time of bubble sort and selection sort. To find out the time of execution of a block of code compute the time before and after the block by

 clock_t start=clock();
 …
 clock_t end=clock();
 CLOCKS_PER_SEC is constant in time.h library

Example code:

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main()
{
   int a[10000],i,j,min,temp;
   for(i=0;i<10000;i++)
   {
      a[i]=rand()%10000;
   }
   //The bubble Sort
   clock_t start,end;
   start=clock();
   for(i=0;i<10000;i++)
   {
     for(j=i+1;j<10000;j++)
     {
       if(a[i]>a[j])
       {
         int temp=a[i];
         a[i]=a[j];
         a[j]=temp;
       }
     }
   }
   end=clock();
   double extime=(double) (end-start)/CLOCKS_PER_SEC;
   printf("\n\tExecution time for the bubble sort is %f seconds\n ",extime);

   for(i=0;i<10000;i++)
   {
     a[i]=rand()%10000;
   }
   clock_t start1,end1;
   start1=clock();
   // The Selection Sort
   for(i=0;i<10000;i++)
   {
     min=i;
     for(j=i+1;j<10000;j++)
     {
       if(a[min]>a[j])
       {
         min=j;
       }
     }
     temp=a[min];
     a[min]=a[i];
     a[i]=temp;
   }
   end1=clock();
   double extime1=(double) (end1-start1)/CLOCKS_PER_SEC;
   printf("\n");
   printf("\tExecution time for the selection sort is %f seconds\n\n", extime1);
   if(extime1<extime)
     printf("\tSelection sort is faster than Bubble sort by %f seconds\n\n", extime - extime1);
   else if(extime1>extime)
     printf("\tBubble sort is faster than Selection sort by %f seconds\n\n", extime1 - extime);
   else
     printf("\tBoth algorithms have the same execution time\n\n");
}

(Windows 7) My solution to this was to find the device in Device Manager, uninstall the existing driver and install a new one from the android folder in your user account using the include subdirectories option.

All the best.

If you using formview or something similar you can databind the gridview on the iteminserted event of the formview too. Like below

protected void FormView1_ItemInserted(object sender, FormViewInsertedEventArgs e)
    {
        GridView1.DataBind();
    }

You can do this on the data source iteminserted too.

Please clear the collection or Delete the entire collection from MongoDB database and try again later.

Most browsers don't display the custom message passed to confirm().

With this method, you can show a popup with a custom message if your user changed the value of any <input> field.

You can apply this only to some links, or even other HTML elements in your page. Just add a custom class to all the links that need confirmation and apply use the following code:

$(document).ready(function() {_x000D_
  let unsaved = false;_x000D_
  // detect changes in all input fields and set the 'unsaved' flag_x000D_
  $(":input").change(() => unsaved = true);_x000D_
  // trigger popup on click_x000D_
  $('.dangerous-link').click(function() {_x000D_
    if (unsaved && !window.confirm("Are you sure you want to nuke the world?")) {_x000D_
      return; // user didn't confirm_x000D_
    }_x000D_
    // either there are no unsaved changes or the user confirmed_x000D_
    window.location.href = $(this).data('destination');_x000D_
  });_x000D_
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
_x000D_
_x000D_
<input type="text" placeholder="Nuclear code here" />_x000D_
<a data-destination="https://en.wikipedia.org/wiki/Boom" class="dangerous-link">_x000D_
    Launch nuke!_x000D_
</a>

Try changing the input value in the example to get a preview of how it works.

In a typical application there is a UITabBarController and it embeds 3 or more UIViewController as its tabs. In such a case if you subclassed a UITabBarController as YourTabBarController then you can set the selected index simply by:

selectedIndex = 1 // Displays 2nd tab. The index starts from 0.

In case you are navigating to YourTabBarController from any other view, then in that view controller's prepare(for segue:) method you can do:

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        // Get the new view controller using segue.destination.
        // Pass the selected object to the new view controller.
        if segue.identifier == "SegueToYourTabBarController" {
            if let destVC = segue.destination as? YourTabBarController {
                destVC.selectedIndex = 0
            }
        }

I am using this way of setting tab with Xcode 10 and Swift 4.2.

A one liner would be :

str=str[::-1].replace(".",".-",1)[::-1]

select  sql_text, count(*) as "OPEN CURSORS", user_name from v$open_cursor
group by sql_text, user_name order by count(*) desc;

appears to work for me.

How would I accomplish the nextsibling and is there an easier way of doing this?

You may use:

tr/td[@class='name']/following-sibling::td

but I'd rather use directly:

tr[td[@class='name'] ='Brand']/td[@class='desc']

This assumes that:

1. The context node, against which the XPath expression is evaluated is the parent of all tr elements -- not shown in your question.

2. Each tr element has only one td with class attribute valued 'name' and only one td with class attribute valued 'desc'.

while(node.firstChild) {
    node.removeChild(node.firstChild);
}

In cmd

C:\Users\Downloads>install.exe LAX_VM "C:\Program Files\Java\jdk1.8.0_60\bin\java.exe"

To expand on the answer I came here to get a better understanding so I wrote this that can explain it and helped me too.

It has the setlocal DisableDelayedExpansion in there so you can locally set this as you wish between the setlocal EnableDelayedExpansion and it.

@echo off
title %~nx0
for /f "tokens=*" %%A in ("Some Thing") do (
  setlocal EnableDelayedExpansion
  set z=%%A
  echo !z!        Echoing the assigned variable in setlocal scope.
  echo %%A        Echoing the variable in local scope.
  setlocal DisableDelayedExpansion
  echo !z!        &rem !z!           Neither of these now work, which makes sense.
  echo %z%        &rem ECHO is off.  Neither of these now work, which makes sense.
  echo %%A        Echoing the variable in its local scope, will always work.
  )

I'm not sure if it will add deleted files, but git add . from the root will add all untracked files.

It depends on when the self executing anonymous function is running. It is possible that it is running before window.document is defined.

In that case, try adding a listener

window.addEventListener('load', yourFunction, false);
// ..... or 
window.addEventListener('DOMContentLoaded', yourFunction, false);

yourFunction () {
  // some ocde

}

Update: (after the update of the question and inclusion of the code)

Read the following about the issues in referencing DOM elements from a JavaScript inserted and run in head element:
- “getElementsByTagName(…)[0]” is undefined?
- Traversing the DOM

Separate classes by white space

$('element').removeClass('class1 class2');

In answer to your first question, it should be as simple as replacing:

   when(LoggerFactory.getLogger(GoodbyeController.class)).thenReturn(loggerMock);

with

   when(LoggerFactory.getLogger(any(Class.class))).thenReturn(loggerMock);

Regarding your second question (and possibly the puzzling behavior with the first), I think the problem is that logger is static. So,

private static Logger logger = LoggerFactory.getLogger(GoodbyeController.class);

is executed when the class is initialized, not the when the object is instantiated. Sometimes this can be at about the same time, so you'll be OK, but it's hard to guarantee that. So you set up LoggerFactory.getLogger to return your mock, but the logger variable may have already been set with a real Logger object by the time your mocks are set up.

You may be able to set the logger explicitly using something like ReflectionTestUtils (I don't know if that works with static fields) or change it from a static field to an instance field. Either way, you don't need to mock LoggerFactory.getLogger because you'll be directly injecting the mock Logger instance.

@hash{@keys} = undef;

The syntax here where you are referring to the hash with an @ is a hash slice. We're basically saying $hash{$keys[0]} AND $hash{$keys[1]} AND $hash{$keys[2]} ... is a list on the left hand side of the =, an lvalue, and we're assigning to that list, which actually goes into the hash and sets the values for all the named keys. In this case, I only specified one value, so that value goes into $hash{$keys[0]}, and the other hash entries all auto-vivify (come to life) with undefined values. [My original suggestion here was set the expression = 1, which would've set that one key to 1 and the others to undef. I changed it for consistency, but as we'll see below, the exact values do not matter.]

When you realize that the lvalue, the expression on the left hand side of the =, is a list built out of the hash, then it'll start to make some sense why we're using that @. [Except I think this will change in Perl 6.]

The idea here is that you are using the hash as a set. What matters is not the value I am assigning; it's just the existence of the keys. So what you want to do is not something like:

if ($hash{$key} == 1) # then key is in the hash

instead:

if (exists $hash{$key}) # then key is in the set

It's actually more efficient to just run an exists check than to bother with the value in the hash, although to me the important thing here is just the concept that you are representing a set just with the keys of the hash. Also, somebody pointed out that by using undef as the value here, we will consume less storage space than we would assigning a value. (And also generate less confusion, as the value does not matter, and my solution would assign a value only to the first element in the hash and leave the others undef, and some other solutions are turning cartwheels to build an array of values to go into the hash; completely wasted effort).

Use substr():

$result = substr($myStr, 0, 5);

First, install unzip on colab:

!apt install unzip

then use unzip to extract your files:

!unzip  source.zip -d destination.zip

Construct a Random object at application startup:

Random random = new Random();

Then use Random.nextInt(int):

int randomNumber = random.nextInt(max + 1 - min) + min;

Note that the both lower and upper limits are inclusive.

var countries = ['United States', 'Canada', 'Argentina', 'Armenia'];
var cList = $('ul.mylist')
$.each(countries, function(i)
{
    var li = $('<li/>')
        .addClass('ui-menu-item')
        .attr('role', 'menuitem')
        .appendTo(cList);
    var aaa = $('<a/>')
        .addClass('ui-all')
        .text(countries[i])
        .appendTo(li);
});

From SQL Server 2016 you can just use

 DROP TABLE IF EXISTS ##CLIENTS_KEYWORD

On previous versions you can use

IF OBJECT_ID('tempdb..##CLIENTS_KEYWORD', 'U') IS NOT NULL
/*Then it exists*/
DROP TABLE ##CLIENTS_KEYWORD
CREATE TABLE ##CLIENTS_KEYWORD
(
   client_id INT
)

You could also consider truncating the table instead rather than dropping and recreating.

IF OBJECT_ID('tempdb..##CLIENTS_KEYWORD', 'U') IS NOT NULL
  TRUNCATE TABLE ##CLIENTS_KEYWORD
ELSE
  CREATE TABLE ##CLIENTS_KEYWORD
  (
     client_id INT
  ) 

try like this

var username= "<%= Session["UserName"]%>";

To connect using a username/password and specifying ports, the code looks like this:

from pyhive import presto

cursor = presto.connect(host='host.example.com',
                    port=8081,
                    username='USERNAME:PASSWORD').cursor()

sql = 'select * from table limit 10'

cursor.execute(sql)

print(cursor.fetchone())
print(cursor.fetchall())

Sometimes this kind of error happens when you create tables with different database users and try to SELECT with a different user. You can grant all privileges using below query.

GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA schema_name TO username;

And also you can grant access for DML statements

GRANT SELECT, INSERT, UPDATE, DELETE ON ALL TABLES IN SCHEMA schema_name TO username;

I had a similar problem. I am posting my solution here because I believe it might help one of the commenters.

For me, the obstacle was that the page required a login and then gave me a new URL through javascript. Here is what I had to do:

curl -c cookiejar -g -O -J -L -F "j_username=username" -F "j_password=password" <URL>

Note that j_username and j_password is the name of the fields for my website's login form. You will have to open the source of the webpage to see what the 'name' of the username field and the 'name' of the password field is in your case. After that I go an html file with java script in which the new URL was embedded. After parsing this out just resubmit with the new URL:

curl -c cookiejar -g -O -J -L -F "j_username=username" -F "j_password=password" <NEWURL>

Originally from this blog post. We can achieve if else by using below code

<xsl:choose>
    <xsl:when test="something to test">

    </xsl:when>
    <xsl:otherwise>

    </xsl:otherwise>
</xsl:choose>

So here is what I did

<h3>System</h3>
    <xsl:choose>
        <xsl:when test="autoIncludeSystem/autoincludesystem_info/@mdate"> <!-- if attribute exists-->
            <p>
                <dd><table border="1">
                    <tbody>
                        <tr>
                            <th>File Name</th>
                            <th>File Size</th>
                            <th>Date</th>
                            <th>Time</th>
                            <th>AM/PM</th>
                        </tr>
                        <xsl:for-each select="autoIncludeSystem/autoincludesystem_info">
                            <tr>
                                <td valign="top" ><xsl:value-of select="@filename"/></td>
                                <td valign="top" ><xsl:value-of select="@filesize"/></td>
                                <td valign="top" ><xsl:value-of select="@mdate"/></td>
                                <td valign="top" ><xsl:value-of select="@mtime"/></td>
                                <td valign="top" ><xsl:value-of select="@ampm"/></td>
                            </tr>
                        </xsl:for-each>
                    </tbody>
                </table>
                </dd>
            </p>
        </xsl:when>
        <xsl:otherwise> <!-- if attribute does not exists -->
            <dd><pre>
                <xsl:value-of select="autoIncludeSystem"/><br/>
            </pre></dd> <br/>
        </xsl:otherwise>
    </xsl:choose>

My Output

String kk = wd.findElement(By.xpath(//*[@id='customSelect_3']/div[1]/span));

kk.getText().toString();

System.out.println(+kk.getText().toString());

First add your item to mItems and then use:

mAdapter.notifyItemInserted(mItems.size() - 1);

this method is better than using:

mAdapter.notifyDataSetChanged();

in performance.

Give this a try:

PS> $nl = [Environment]::NewLine
PS> gci hklm:\software\microsoft\windows\currentversion\uninstall | 
        ForEach { $_.GetValue("DisplayName") } | Where {$_} | Sort |
        Foreach {"$_$nl"} | Out-File addrem.txt -Enc ascii

It yields the following text in my addrem.txt file:

Adobe AIR

Adobe Flash Player 10 ActiveX

...

Note: on my system, GetValue("DisplayName") returns null for some entries, so I filter those out. BTW, you were close with this:

ForEach-Object -Process { "$_.GetValue("DisplayName") `n" }

Except that within a string, if you need to access a property of a variable, that is, "evaluate an expression", then you need to use subexpression syntax like so:

Foreach-Object -Process { "$($_.GetValue('DisplayName'))`r`n" }

Essentially within a double quoted string PowerShell will expand variables like $_, but it won't evaluate expressions unless you put the expression within a subexpression using this syntax:

$(`<Multiple statements can go in here`>).

As of EF 5.0, the approach you describe is the preferred way. So

PM> Update-Database -TargetMigration:"NameOfSecondToLastMigration"

or using your example migrations

PM> Update-Database -TargetMigration:"CategoryIdIsLong"

One solution would be to create a wrapper PS script that automates the steps above. Additionally, feel free to create a feature request for this, or better yet, take a shot at implementing it! https://github.com/dotnet/ef6

Check this every thing is explained in detail: Pagination using RecyclerView From A to Z

    mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
    @Override
    public void onScrollStateChanged(RecyclerView recyclerView,
                                     int newState) {
        super.onScrollStateChanged(recyclerView, newState);
    }

    @Override
    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
        super.onScrolled(recyclerView, dx, dy);
        int visibleItemCount = mLayoutManager.getChildCount();
        int totalItemCount = mLayoutManager.getItemCount();
        int firstVisibleItemPosition = mLayoutManager.findFirstVisibleItemPosition();

        if (!mIsLoading && !mIsLastPage) {
            if ((visibleItemCount + firstVisibleItemPosition) >= totalItemCount
                    && firstVisibleItemPosition >= 0) {
                loadMoreItems();
            }
        }
    }
})

loadMoreItems():

private void loadMoreItems() {
    mAdapter.removeLoading();
    //load data here from the server

    // in case of success
    mAdapter.addData(data);
    // if there might be more data
    mAdapter.addLoading();
}

in MyAdapter :

private boolean mIsLoadingFooterAdded = false;

public void addLoading() {
    if (!mIsLoadingFooterAdded) {
        mIsLoadingFooterAdded = true;
        mLineItemList.add(new LineItem());
        notifyItemInserted(mLineItemList.size() - 1);
    }
}

public void removeLoading() {
    if (mIsLoadingFooterAdded) {
        mIsLoadingFooterAdded = false;
        int position = mLineItemList.size() - 1;
        LineItem item = mLineItemList.get(position);

        if (item != null) {
            mLineItemList.remove(position);
            notifyItemRemoved(position);
        }
    }
}

public void addData(List<YourDataClass> data) {

    for (int i = 0; i < data.size(); i++) {
        YourDataClass yourDataObject = data.get(i);
        mLineItemList.add(new LineItem(yourDataObject));
        notifyItemInserted(mLineItemList.size() - 1);
    }
}

Also remember that it must be:

#include "stdafx.h"
#include <iostream>

and not the other way around

#include <iostream>
#include "stdafx.h"

The derivedFactor function from mosaic package seems to be designed to handle this. Using this example, it would look like:

library(dplyr)
library(mosaic)
df <- mutate(df, g = derivedFactor(
     "2" = (a == 2 | a == 5 | a == 7 | (a == 1 & b == 4)),
     "3" = (a == 0 | a == 1 | a == 4 | a == 3 |  c == 4),
     .method = "first",
     .default = NA
     ))

(If you want the result to be numeric instead of a factor, you can wrap derivedFactor in an as.numeric call.)

derivedFactor can be used for an arbitrary number of conditionals, too.

String original = "hello world";
byte[] utf8Bytes = original.getBytes("UTF-8");

Just thought I'd add my solution below, since the answers above did not meet my exact needs. My Xml schema required seperate Date and Time elements, not a singe DateTime field. The standard XMLGregorianCalendar constructor used above will generate a DateTime field

Note there a couple of gothca's, such as having to add one to the month (since java counts months from 0).

GregorianCalendar cal = new GregorianCalendar();
cal.setTime(yourDate);
XMLGregorianCalendar xmlDate = DatatypeFactory.newInstance().newXMLGregorianCalendarDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH)+1, cal.get(Calendar.DAY_OF_MONTH), 0);
XMLGregorianCalendar xmlTime = DatatypeFactory.newInstance().newXMLGregorianCalendarTime(cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE), cal.get(Calendar.SECOND), 0);

Below is a batch file that will wait for 1 minute, check the day, and then perform an action. It uses PING.EXE, but requires no files that aren't included with Windows.

@ECHO OFF

:LOOP
ECHO Waiting for 1 minute...
  PING -n 60 127.0.0.1>nul
  IF %DATE:~0,3%==Mon CALL SomeOtherFile.cmd
  IF %DATE:~0,3%==Tue CALL SomeOtherFile.cmd
  IF %DATE:~0,3%==Wed CALL SomeOtherFile.cmd
  IF %DATE:~0,3%==Thu CALL WootSomeOtherFile.cmd
  IF %DATE:~0,3%==Fri CALL SomeOtherFile.cmd
  IF %DATE:~0,3%==Sat ECHO Saturday...nothing to do.
  IF %DATE:~0,3%==Sun ECHO Sunday...nothing to do.
GOTO LOOP

It could be improved upon in many ways, but it might get you started.

Could not get this to work until I put Authorization in single quotes:

axios.get(URL, { headers: { 'Authorization': AuthStr } })

If that message is bother you, You need run Visual Studio with administrative rights to apply this direction on Visual Studio.

Tools-> Options-> Debugging-> Symbols and select check in a box "Microsoft Symbol Servers", mark load all modules then click Load all Symbols.

Everything else Visual Studio will do it for you, and you will have this message under Debug in Output window "Native' has exited with code 0 (0x0)"

System.out.println("First Name: " + firstname);
System.out.println("Last Name: " + lastname);

or

System.out.println(String.format("First Name: %s", firstname));
System.out.println(String.format("Last Name: %s", lastname));

I think that the answer is that it depends on a whole range of factors such as:

• whether the list size can be predicted beforehand (i.e. can you set the capacity accurately),
• whether the list size is variable (i.e. each time it is filled),
• how long the lifetime of the list will be in both versions, and
• your heap / GC parameters and CPU.

These make it hard to predict which will be better. But my intuition is that the difference will not be that great.

Two bits of advice on optimization:

• Don't waste time trying to optimize this ... unless the application is objectively too slow AND measurement using a profiler tells you that this is a performance hotspot. (The chances are that one of those preconditions won't be true.)

• If you do decide to optimize this, do it scientifically. Try both (all) of the alternatives and decide which is best by measuring the performance in your actual application on a realistic problem / workload / input set. (An artificial benchmark is liable to give you answers that do not predict real-world behavior, because of factors like those I listed previously.)

This will not work:

wget -q -S -O - google.com 1>wget.txt 2>&1

since redirects are evaluated right to left, this sends html to wget.txt and the header to STDOUT:

wget -q -S -O - google.com 2>&1 1>wget.txt

res = request.GET['paymentid'] will raise a KeyError if paymentid is not in the GET data.

Your sample php code checks to see if paymentid is in the POST data, and sets $payID to '' otherwise:

$payID = isset($_POST['paymentid']) ? $_POST['paymentid'] : ''

The equivalent in python is to use the get() method with a default argument:

payment_id = request.POST.get('payment_id', '')

while debugging, this is what I see in the response.GET: <QueryDict: {}>, request.POST: <QueryDict: {}>

It looks as if the problem is not accessing the POST data, but that there is no POST data. How are you are debugging? Are you using your browser, or is it the payment gateway accessing your page? It would be helpful if you shared your view.

Once you are managing to submit some post data to your page, it shouldn't be too tricky to convert the sample php to python.

Note this is not tested for python 3.x

In CMD

pip install wheel
pip install pymysql

in settings.py

import pymysql
pymysql.install_as_MySQLdb()

It worked with me

ref.orderByChild("lead").startAt("Jack Nicholson").endAt("Jack Nicholson").listner....

This will work.

You have an issue in scripts order. Load them in this order:

<!-- jQuery -->
<script src="//code.jquery.com/jquery-1.11.0.min.js"></script>
<!-- BS JavaScript -->
<script type="text/javascript" src="js/bootstrap.js"></script>
<!-- Have fun using Bootstrap JS -->
<script type="text/javascript">
$(window).load(function() {
    $('#prizePopup').modal('show');
});
</script>

Why this? Because Bootstrap JS depends on jQuery:

Plugin dependencies

Some plugins and CSS components depend on other plugins. If you include plugins individually, make sure to check for these dependencies in the docs. Also note that all plugins depend on jQuery (this means jQuery must be included before the plugin files).

Now there is a setting in Android emulator

As Triptych points out, you can call any global scope function by finding it in the host object's contents.

A cleaner method, which pollutes the global namespace much less, is to explicitly put the functions into an array directly like so:

var dyn_functions = [];
dyn_functions['populate_Colours'] = function (arg1, arg2) { 
                // function body
           };
dyn_functions['populate_Shapes'] = function (arg1, arg2) { 
                // function body
           };
// calling one of the functions
var result = dyn_functions['populate_Shapes'](1, 2);
// this works as well due to the similarity between arrays and objects
var result2 = dyn_functions.populate_Shapes(1, 2);

This array could also be a property of some object other than the global host object too meaning that you can effectively create your own namespace as many JS libraries such as jQuery do. This is useful for reducing conflicts if/when you include multiple separate utility libraries in the same page, and (other parts of your design permitting) can make it easier to reuse the code in other pages.

You could also use an object like so, which you might find cleaner:

var dyn_functions = {};
dyn_functions.populate_Colours = function (arg1, arg2) { 
                // function body
           };
dyn_functions['populate_Shapes'] = function (arg1, arg2) { 
                // function body
           };
// calling one of the functions
var result = dyn_functions.populate_Shapes(1, 2);
// this works as well due to the similarity between arrays and objects
var result2 = dyn_functions['populate_Shapes'](1, 2);

Note that with either an array or an object, you can use either method of setting or accessing the functions, and can of course store other objects in there too. You can further reduce the syntax of either method for content that isn't that dynamic by using JS literal notation like so:

var dyn_functions = {
           populate_Colours:function (arg1, arg2) { 
                // function body
           };
         , populate_Shapes:function (arg1, arg2) { 
                // function body
           };
};

Edit: of course for larger blocks of functionality you can expand the above to the very common "module pattern" which is a popular way to encapsulate code features in an organised manner.

This line of code might not work in IE 8 because of native support problems.

$(".hidden").attr("placeholder", "Type here to search");

You can try importing a JQuery placeholder plugin for this task. Simply import it to your libraries and initiate from the sample code below.

$('input, textarea').placeholder();

Find everythin with a dot and show only the suffix.

find . -type f -name "*.*" | awk -F. '{print $NF}' | sort -u

if you know all suffix have 3 characters then

find . -type f -name "*.???" | awk -F. '{print $NF}' | sort -u

or with sed shows all suffixes with one to four characters. Change {1,4} to the range of characters you are expecting in the suffix.

find . -type f | sed -n 's/.*\.\(.\{1,4\}\)$/\1/p'| sort -u

File modification:

ls -t

Inode change:

ls -tc

File access:

ls -tu

"Newest" one at the bottom:

ls -tr

None of this is a creation time. Most Unix filesystems don't support creation timestamps.

The @jfriend00's answer helps me to understand the technique to animate only remove class (not add).

A "base" class should have transition property (like transition: 2s linear all;). This enables animations when any other class is added or removed on this element. But to disable animation when other class is added (and only animate class removing) we need to add transition: none; to the second class.

Example

CSS:

.issue {
  background-color: lightblue;
  transition: 2s linear all;
}

.recently-updated {
  background-color: yellow;
  transition: none;
}

HTML:

<div class="issue" onclick="addClass()">click me</div>

JS (only needed to add class):

var timeout = null;

function addClass() {
  $('.issue').addClass('recently-updated');
  if (timeout) {
    clearTimeout(timeout);
    timeout = null;
  }
  timeout = setTimeout(function () {
    $('.issue').removeClass('recently-updated');
  }, 1000);
}

plunker of this example.

With this code only removing of recently-updated class will be animated.

Note added in 2018

From Go 1.10 there is a strings.Builder type, please take a look at this answer for more detail.

Pre-201x answer

The benchmark code of @cd1 and other answers are wrong. b.N is not supposed to be set in benchmark function. It's set by the go test tool dynamically to determine if the execution time of the test is stable.

A benchmark function should run the same test b.N times and the test inside the loop should be the same for each iteration. So I fix it by adding an inner loop. I also add benchmarks for some other solutions:

package main

import (
    "bytes"
    "strings"
    "testing"
)

const (
    sss = "xfoasneobfasieongasbg"
    cnt = 10000
)

var (
    bbb      = []byte(sss)
    expected = strings.Repeat(sss, cnt)
)

func BenchmarkCopyPreAllocate(b *testing.B) {
    var result string
    for n := 0; n < b.N; n++ {
        bs := make([]byte, cnt*len(sss))
        bl := 0
        for i := 0; i < cnt; i++ {
            bl += copy(bs[bl:], sss)
        }
        result = string(bs)
    }
    b.StopTimer()
    if result != expected {
        b.Errorf("unexpected result; got=%s, want=%s", string(result), expected)
    }
}

func BenchmarkAppendPreAllocate(b *testing.B) {
    var result string
    for n := 0; n < b.N; n++ {
        data := make([]byte, 0, cnt*len(sss))
        for i := 0; i < cnt; i++ {
            data = append(data, sss...)
        }
        result = string(data)
    }
    b.StopTimer()
    if result != expected {
        b.Errorf("unexpected result; got=%s, want=%s", string(result), expected)
    }
}

func BenchmarkBufferPreAllocate(b *testing.B) {
    var result string
    for n := 0; n < b.N; n++ {
        buf := bytes.NewBuffer(make([]byte, 0, cnt*len(sss)))
        for i := 0; i < cnt; i++ {
            buf.WriteString(sss)
        }
        result = buf.String()
    }
    b.StopTimer()
    if result != expected {
        b.Errorf("unexpected result; got=%s, want=%s", string(result), expected)
    }
}

func BenchmarkCopy(b *testing.B) {
    var result string
    for n := 0; n < b.N; n++ {
        data := make([]byte, 0, 64) // same size as bootstrap array of bytes.Buffer
        for i := 0; i < cnt; i++ {
            off := len(data)
            if off+len(sss) > cap(data) {
                temp := make([]byte, 2*cap(data)+len(sss))
                copy(temp, data)
                data = temp
            }
            data = data[0 : off+len(sss)]
            copy(data[off:], sss)
        }
        result = string(data)
    }
    b.StopTimer()
    if result != expected {
        b.Errorf("unexpected result; got=%s, want=%s", string(result), expected)
    }
}

func BenchmarkAppend(b *testing.B) {
    var result string
    for n := 0; n < b.N; n++ {
        data := make([]byte, 0, 64)
        for i := 0; i < cnt; i++ {
            data = append(data, sss...)
        }
        result = string(data)
    }
    b.StopTimer()
    if result != expected {
        b.Errorf("unexpected result; got=%s, want=%s", string(result), expected)
    }
}

func BenchmarkBufferWrite(b *testing.B) {
    var result string
    for n := 0; n < b.N; n++ {
        var buf bytes.Buffer
        for i := 0; i < cnt; i++ {
            buf.Write(bbb)
        }
        result = buf.String()
    }
    b.StopTimer()
    if result != expected {
        b.Errorf("unexpected result; got=%s, want=%s", string(result), expected)
    }
}

func BenchmarkBufferWriteString(b *testing.B) {
    var result string
    for n := 0; n < b.N; n++ {
        var buf bytes.Buffer
        for i := 0; i < cnt; i++ {
            buf.WriteString(sss)
        }
        result = buf.String()
    }
    b.StopTimer()
    if result != expected {
        b.Errorf("unexpected result; got=%s, want=%s", string(result), expected)
    }
}

func BenchmarkConcat(b *testing.B) {
    var result string
    for n := 0; n < b.N; n++ {
        var str string
        for i := 0; i < cnt; i++ {
            str += sss
        }
        result = str
    }
    b.StopTimer()
    if result != expected {
        b.Errorf("unexpected result; got=%s, want=%s", string(result), expected)
    }
}

Environment is OS X 10.11.6, 2.2 GHz Intel Core i7

Test results:

BenchmarkCopyPreAllocate-8         20000             84208 ns/op          425984 B/op          2 allocs/op
BenchmarkAppendPreAllocate-8       10000            102859 ns/op          425984 B/op          2 allocs/op
BenchmarkBufferPreAllocate-8       10000            166407 ns/op          426096 B/op          3 allocs/op
BenchmarkCopy-8                    10000            160923 ns/op          933152 B/op         13 allocs/op
BenchmarkAppend-8                  10000            175508 ns/op         1332096 B/op         24 allocs/op
BenchmarkBufferWrite-8             10000            239886 ns/op          933266 B/op         14 allocs/op
BenchmarkBufferWriteString-8       10000            236432 ns/op          933266 B/op         14 allocs/op
BenchmarkConcat-8                     10         105603419 ns/op        1086685168 B/op    10000 allocs/op

Conclusion:

1. CopyPreAllocate is the fastest way; AppendPreAllocate is pretty close to No.1, but it's easier to write the code.
2. Concat has really bad performance both for speed and memory usage. Don't use it.
3. Buffer#Write and Buffer#WriteString are basically the same in speed, contrary to what @Dani-Br said in the comment. Considering string is indeed []byte in Go, it makes sense.
4. bytes.Buffer basically use the same solution as Copy with extra book keeping and other stuff.
5. Copy and Append use a bootstrap size of 64, the same as bytes.Buffer
6. Append use more memory and allocs, I think it's related to the grow algorithm it use. It's not growing memory as fast as bytes.Buffer

Suggestion:

1. For simple task such as what OP wants, I would use Append or AppendPreAllocate. It's fast enough and easy to use.
2. If need to read and write the buffer at the same time, use bytes.Buffer of course. That's what it's designed for.

webforms;

TextBox.Background = System.Drawing.Color.Red;

I have written an article about DCEVM: Spring-mvc + Velocity + DCEVM

I think it's worth it, since my environment is running without any problems.

Try this to get the month in number form:

Month(DateAdd("m", -3, Now))

It will give you 12 for December.

So in your case you would use Month(DateAdd("m", -1, Now)) to just subract one month.

I just got that problem when converting from % formatting to .format().

Previous code:

"SET !TIMEOUT_STEP %{USER_TIMEOUT_STEP}d" % {'USER_TIMEOUT_STEP' = 3}

Problematic syntax:

"SET !TIMEOUT_STEP {USER_TIMEOUT_STEP}".format('USER_TIMEOUT_STEP' = 3)

The problem is that format is a function that needs parameters. They cannot be strings. That is one of worst python error messages I've ever seen.

Corrected code:

"SET !TIMEOUT_STEP {USER_TIMEOUT_STEP}".format(USER_TIMEOUT_STEP = 3)

$Group is an object, but you will actually need to check if $Group.samaccountname.StartsWith("string").

Change $Group.StartsWith("S_G_") to $Group.samaccountname.StartsWith("S_G_").

In your 'encrypt' method, you should either get rid of the try/catch and instead add a try/catch around where you call encrypt (inside 'actionPerformed') or return null inside the catch within encrypt (that's the second error.

You can follow below steps to embed the files you want to your website.

1. Find the PDF file in Google Drive
2. Preview the PDF file in Google Drive
3. Pop-out the Google Drive preview
4. Use the More actions menu and choose Embed item
5. Copy code provided
6. Edit Google Sites page where you want to embed
7. Open the HTML Editor
8. Paste the HTML embed code provided by the Google Drive preview
9. Use the Update button and Save the page

References: https://www.steegle.com/websites/google-sites-howtos/embed-drive-pdf

To find an ancestor of a given type from code, you can use:

[CanBeNull]
public static T FindAncestor<T>(DependencyObject d) where T : DependencyObject
{
    while (true)
    {
        d = VisualTreeHelper.GetParent(d);

        if (d == null)
            return null;

        var t = d as T;

        if (t != null)
            return t;
    }
}

This implementation uses iteration instead of recursion which can be slightly faster.

If you're using C# 7, this can be made slightly shorter:

[CanBeNull]
public static T FindAncestor<T>(DependencyObject d) where T : DependencyObject
{
    while (true)
    {
        d = VisualTreeHelper.GetParent(d);

        if (d == null)
            return null;

        if (d is T t)
            return t;
    }
}

• In ConfigureServices add services.AddCors(); BEFORE services.AddMvc();

• Add UseCors in Configure

   app.UseCors(builder => builder
       .AllowAnyOrigin()
       .AllowAnyMethod()
       .AllowAnyHeader());   
   app.UseMvc();
  

Main point is that add app.UseCors, before app.UseMvc().

Make sure you declare the CORS functionality before MVC so the middleware fires before the MVC pipeline gets control and terminates the request.

After the above method works you can change it configure a specific ORIGIN to accept api calls and avoid leaving your API so open to anyone

public void ConfigureServices(IServiceCollection services)
{
    services.AddCors(options => options.AddPolicy("ApiCorsPolicy", builder =>
    {
        builder.WithOrigins("http://localhost:4200").AllowAnyMethod().AllowAnyHeader();
    }));

    services.AddMvc();
}

In the configure method tell CORS to use the policy you just created:

app.UseCors("ApiCorsPolicy");
app.UseMvc();

I just found this compact article on the subject - https://dzone.com/articles/cors-in-net-core-net-core-security-part-vi

Try,

  string[] files =  new DirectoryInfo(dir).GetFiles().Select(o => o.Name).ToArray();

Above line may throw UnauthorizedAccessException. To handle this check out below link

C# Handle System.UnauthorizedAccessException in LINQ

On OSX, I'm using -f to specify the input format, -j to not attempt to set any date, and an output format specifier. For example:

$ date -j -f "%m/%d/%y %H:%M:%S %p" "8/22/15 8:15:00 am" +"%m%d%y"
082215

Your example:

$ date -j -f "%d %b %Y" "27 JUN 2011" +%Y%m%d
20110627

My brain seems happy to accept that lst[start:end] contains the start-th item. I might even say that it is a 'natural assumption'.

But occasionally a doubt creeps in and my brain asks for reassurance that it does not contain the end-th element.

In these moments I rely on this simple theorem:

for any n,    lst = lst[:n] + lst[n:]

This pretty property tells me that lst[start:end] does not contain the end-th item because it is in lst[end:].

Note that this theorem is true for any n at all. For example, you can check that

lst = range(10)
lst[:-42] + lst[-42:] == lst

returns True.

Be sure to remember to invoke json.loads() on the contents of the file, as opposed to the file path of that JSON:

json_file_path = "/path/to/example.json"

with open(json_file_path, 'r') as j:
     contents = json.loads(j.read())

I think a lot of people are guilty of doing this every once in a while (myself included):

contents = json.loads(json_file_path)

In my case, I want to dubug bootstrap tooltip. But the methods above not work for me. I guess bootstrap implemented this by something like mouse in/out event.

Anyway, when I hover on a button, it will generate a brother html element below the button, so I select the button's parent element in "Elements" tab of "Developer tools" window, hover the button, and "Ctrl + C", then I can paste the source code which contains the generated code. Last find the generated code, and add it to the source code by "Edit as HTML" in "Elements" tab.

Hope it can help somebody.

For python27 1?Install numpy + mkl(download link:http://www.lfd.uci.edu/~gohlke/pythonlibs/) 2?install scipy (the same site) OK!

I'd like to provide an answer for the case that you do not have control over the code that opens the connection. Like I did when using the URLClassLoader to load a jar file from a password protected server.

The Authenticator solution would work but has the drawback that it first tries to reach the server without a password and only after the server asks for a password provides one. That's an unnecessary roundtrip if you already know the server would need a password.

public class MyStreamHandlerFactory implements URLStreamHandlerFactory {

    private final ServerInfo serverInfo;

    public MyStreamHandlerFactory(ServerInfo serverInfo) {
        this.serverInfo = serverInfo;
    }

    @Override
    public URLStreamHandler createURLStreamHandler(String protocol) {
        switch (protocol) {
            case "my":
                return new MyStreamHandler(serverInfo);
            default:
                return null;
        }
    }

}

public class MyStreamHandler extends URLStreamHandler {

    private final String encodedCredentials;

    public MyStreamHandler(ServerInfo serverInfo) {
        String strCredentials = serverInfo.getUsername() + ":" + serverInfo.getPassword();
        this.encodedCredentials = Base64.getEncoder().encodeToString(strCredentials.getBytes());
    }

    @Override
    protected URLConnection openConnection(URL url) throws IOException {
        String authority = url.getAuthority();
        String protocol = "http";
        URL directUrl = new URL(protocol, url.getHost(), url.getPort(), url.getFile());

        HttpURLConnection connection = (HttpURLConnection) directUrl.openConnection();
        connection.setRequestProperty("Authorization", "Basic " + encodedCredentials);

        return connection;
    }

}

This registers a new protocol my that is replaced by http when credentials are added. So when creating the new URLClassLoader just replace http with my and everything is fine. I know URLClassLoader provides a constructor that takes an URLStreamHandlerFactory but this factory is not used if the URL points to a jar file.

Actually, RESTfulness only applies to RESOURCES, as indicated by a Universal Resource Identifier. So to even talk about things like headers, cookies, etc. in regards to REST is not really appropriate. REST can work over any protocol, even though it happens to be routinely done over HTTP.

The main determiner is this: if you send a REST call, which is a URI, then once the call makes it successfully to the server, does that URI return the same content, assuming no transitions have been performed (PUT, POST, DELETE)? This test would exclude errors or authentication requests being returned, because in that case, the request has not yet made it to the server, meaning the servlet or application that will return the document corresponding to the given URI.

Likewise, in the case of a POST or PUT, can you send a given URI/payload, and regardless of how many times you send the message, it will always update the same data, so that subsequent GETs will return a consistent result?

REST is about the application data, not about the low-level information required to get that data transferred about.

In the following blog post, Roy Fielding gave a nice summary of the whole REST idea:

http://groups.yahoo.com/neo/groups/rest-discuss/conversations/topics/5841

"A RESTful system progresses from one steady-state to the next, and each such steady-state is both a potential start-state and a potential end-state. I.e., a RESTful system is an unknown number of components obeying a simple set of rules such that they are always either at REST or transitioning from one RESTful state to another RESTful state. Each state can be completely understood by the representation(s) it contains and the set of transitions that it provides, with the transitions limited to a uniform set of actions to be understandable. The system may be a complex state diagram, but each user agent is only able to see one state at a time (the current steady-state) and thus each state is simple and can be analyzed independently. A user, OTOH, is able to create their own transitions at any time (e.g., enter a URL, select a bookmark, open an editor, etc.)."

Going to the issue of authentication, whether it is accomplished through cookies or headers, as long as the information isn't part of the URI and POST payload, it really has nothing to do with REST at all. So, in regards to being stateless, we are talking about the application data only.

For example, as the user enters data into a GUI screen, the client is keeping track of what fields have been entered, which have not, any required fields that are missing etc. This is all CLIENT CONTEXT, and should not be sent or tracked by the server. What does get sent to the server is the complete set of fields that need to be modified in the IDENTIFIED resource (by the URI), such that a transition occurs in that resource from one RESTful state to another.

So, the client keeps track of what the user is doing, and only sends logically complete state transitions to the server.

It's using extended slicing - a string is a sequence in Python, and shares some methods with other sequences (namely lists and tuples). There are three parts to slicing - start, stop and step. All of them have default values - start defaults to 0, stop defaults to len(sequence), and step defaults to 1. By specifying [::-1] you're saying "all the elements in sequence a, starting from the beginning, to the end going backward one at a time.

This feature was introduced in Python 2.3.5, and you can read more in the What's New docs.

Old thread, but here is an answer.

Problematic fonts with voyager

ie. if you install some corel suite, drop some language options away. We dig through this with process monitor and found the reason, with us it was these two font files.

DFKai71.ttf dfmw5.ttf

We had same problem and it was fixed by removing these two font files from windows\fonts folder.

Figured it out for myself in the end. It is simple, I was just missing the ** operator to unpack the dictionary

So my example becomes:

d = dict(p1=1, p2=2)
def f2(p1,p2):
    print p1, p2
f2(**d)

It is never possible. Constructor Overriding is never possible in Java.

This is because,

Constructor looks like a method but name should be as class name and no return value.

Overriding means what we have declared in Super class, that exactly we have to declare in Sub class it is called Overriding. Super class name and Sub class names are different.

If you trying to write Super class Constructor in Sub class, then Sub class will treat that as a method not constructor because name should not match with Sub class name. And it will give an compilation error that methods does not have return value. So we should declare as void, then only it will compile.

Have a look at the following code :

Class One
        {
         ....
         One() { // Super Class constructor
          .... 
        }

        One(int a) { // Super Class Constructor Overloading
          .... 
        }
 }

Class Two extends One
                   {
                    One() {    // this is a method not constructor 
                    .....      // because name should not match with Class name
                   }

                    Two() { // sub class constructor
                   ....  
                   }

                   Two(int b) { // sub class constructor overloading
                   ....
                  }
 }  

try this code it will make your input into upper case

edittext.setFilters(new InputFilter[] {new InputFilter.AllCaps()});

Modified versions of http://www.peterbe.com/plog/uniqifiers-benchmark

To preserve the order:

def f(seq): # Order preserving
  ''' Modified version of Dave Kirby solution '''
  seen = set()
  return [x for x in seq if x not in seen and not seen.add(x)]

OK, now how does it work, because it's a little bit tricky here if x not in seen and not seen.add(x):

In [1]: 0 not in [1,2,3] and not print('add')
add
Out[1]: True

Why does it return True? print (and set.add) returns nothing:

In [3]: type(seen.add(10))
Out[3]: <type 'NoneType'>

and not None == True, but:

In [2]: 1 not in [1,2,3] and not print('add')
Out[2]: False

Why does it print 'add' in [1] but not in [2]? See False and print('add'), and doesn't check the second argument, because it already knows the answer, and returns true only if both arguments are True.

More generic version, more readable, generator based, adds the ability to transform values with a function:

def f(seq, idfun=None): # Order preserving
  return list(_f(seq, idfun))

def _f(seq, idfun=None):  
  ''' Originally proposed by Andrew Dalke '''
  seen = set()
  if idfun is None:
    for x in seq:
      if x not in seen:
        seen.add(x)
        yield x
  else:
    for x in seq:
      x = idfun(x)
      if x not in seen:
        seen.add(x)
        yield x

Without order (it's faster):

def f(seq): # Not order preserving
  return list(set(seq))

The actual walk through the directories works as you have coded it. If you replace the contents of the inner loop with a simple print statement you can see that each file is found:

import os
rootdir = 'C:/Users/sid/Desktop/test'

for subdir, dirs, files in os.walk(rootdir):
    for file in files:
        print os.path.join(subdir, file)

If you still get errors when running the above, please provide the error message.

Updated for Python3

import os
rootdir = 'C:/Users/sid/Desktop/test'

for subdir, dirs, files in os.walk(rootdir):
    for file in files:
        print(os.path.join(subdir, file))

I encountered this problem when I import GridSearchCV.

Just changed sklearn.model_selection to sklearn.grid_search.

A process consists of at least one thread (think of the main function). Multi threaded code will just spawn more threads. Mutexes are used to create locks around shared resources to avoid data corruption / unexpected / unwanted behaviour. Basically it provides for sequential execution in an asynchronous setup - the requirement for which stems from non-const non-atomic operations on shared data structures.

A vivid description of what mutexes would be the case of people (threads) queueing up to visit the restroom (shared resource). While one person (thread) is using the bathroom easing him/herself (non-const non-atomic operation), he/she should ensure the door is locked (mutex), otherwise it could lead to being caught in full monty (unwanted behaviour)

What you're talking about is becoming a payment service provider. I have been there and done that. It was a lot easier about 10 years ago than it is now, but if you have a phenomenal amount of time, money and patience available, it is still possible.

You will need to contact an acquiring bank. You didnt say what region of the world you are in, but by this I dont mean a local bank branch. Each major bank will generally have a separate card acquiring arm. So here in the UK we have (eg) Natwest bank, which uses Streamline (or Worldpay) as its acquiring arm. In total even though we have scores of major banks, they all end up using one of five or so card acquirers.

Happily, all UK card acquirers use a standard protocol for communication of authorisation requests, and end of day settlement. You will find minor quirks where some acquiring banks support some features and have slightly different syntax, but the differences are fairly minor. The UK standards are published by the Association for Payment Clearing Services (APACS) (which is now known as the UKPA). The standards are still commonly referred to as APACS 30 (authorization) and APACS 29 (settlement), but are now formally known as APACS 70 (books 1 through 7).

Although the APACS standard is widely supported across the UK (Amex and Discover accept messages in this format too) it is not used in other countries - each country has it's own - for example: Carte Bancaire in France, CartaSi in Italy, Sistema 4B in Spain, Dankort in Denmark etc. An effort is under way to unify the protocols across Europe - see EPAS.org

Communicating with the acquiring bank can be done a number of ways. Again though, it will depend on your region. In the UK (and most of Europe) we have one communications gateway that provides connectivity to all the major acquirers, they are called TNS and there are dozens of ways of communicating through them to the acquiring bank, from dialup 9600 baud modems, ISDN, HTTPS, VPN or dedicated line. Ultimately the authorisation request will be converted to X25 protocol, which is the protocol used by these acquiring banks when communicating with each other.

In summary then: it all depends on your region.

• Contact a major bank and try to get through to their card acquiring arm.
• Explain that you're setting up as a payment service provider, and request details on comms format for authorization requests and end of day settlement files
• Set up a test merchant account and develop auth/settlement software and go through the accreditation process. Most acquirers help you through this process for free, but when you want to register as an accredited PSP some will request a fee.
• you will need to comply with some regulations too, for example you may need to register as a payment institution

Once you are registered and accredited you'll then be able to accept customers and set up merchant accounts on behalf of the bank/s you're accredited against (bearing in mind that each acquirer will generally support multiple banks). Rinse and repeat with other acquirers as you see necessary.

Beyond that you have lots of other issues, mainly dealing with PCI-DSS. Thats a whole other topic and there are already some q&a's on this site regarding that. Like I say, its a phenomenal undertaking - most likely a multi-year project even for a reasonably sized team, but its certainly possible.

@Pradip Kharbuja

In Cordova-2.6.0.js (l. 4032) :

exitApp:function() {
  console.log("Device.exitApp() is deprecated. Use App.exitApp().");
  app.exitApp();
}

You use a for..in loop for this. Be sure to check if the object owns the properties or all inherited properties are shown as well. An example is like this:

var obj = {a: 1, b: 2};
for (var key in obj) {
  if (obj.hasOwnProperty(key)) {
    var val = obj[key];
    console.log(val);
  }
}

Or if you need recursion to walk through all the properties:

var obj = {a: 1, b: 2, c: {a: 1, b: 2}};
function walk(obj) {
  for (var key in obj) {
    if (obj.hasOwnProperty(key)) {
      var val = obj[key];
      console.log(val);
      walk(val);
    }
  }
}
walk(obj);

Since C++ 17 (VS2015) you can use the standard for read-write locks:

#include <shared_mutex>

typedef std::shared_mutex Lock;
typedef std::unique_lock< Lock > WriteLock;
typedef std::shared_lock< Lock > ReadLock;

Lock myLock;


void ReadFunction()
{
    ReadLock r_lock(myLock);
    //Do reader stuff
}

void WriteFunction()
{
     WriteLock w_lock(myLock);
     //Do writer stuff
}

For older version, you can use boost with the same syntax:

#include <boost/thread/locks.hpp>
#include <boost/thread/shared_mutex.hpp>

typedef boost::shared_mutex Lock;
typedef boost::unique_lock< Lock >  WriteLock;
typedef boost::shared_lock< Lock >  ReadLock;

The code is very long so I can't paste all the code.

There could be any number of reasons why your code doesn't work. Maybe you declared the button variables twice so you aren't actually changing enabling/disabling the button like you think you are. Maybe you are blocking the EDT.

You need to create a SSCCE to post on the forum.

So its up to you to isolate the problem. Start with a simple frame thas two buttons and see if your code works. Once you get that working, then try starting a Thread that simply sleeps for 10 seconds to see if it still works.

Learn how the basice work first before writing a 200 line program.

Learn how to do some basic debugging, we are not mind readers. We can't guess what silly mistake you are doing based on your verbal description of the problem.

And so I see from other answers that there are several ways of dealing with it. But I don't believe this. It has to be reduced into one way. I love IDE but, but if I follow the IDE steps provided from different answers I know this is not the fundamental algebra. My error looked like:

* What went wrong:
Execution failed for task ':compileJava'.
> Could not target platform: 'Java SE 11' using tool chain: 'JDK 8 (1.8)'.

And the way to solve it scientifically is:

vi build.gradle

To change from:

java {
    sourceCompatibility = JavaVersion.toVersion('11')
    targetCompatibility = JavaVersion.toVersion('11')
}

to become:

java {
    sourceCompatibility = JavaVersion.toVersion('8')
    targetCompatibility = JavaVersion.toVersion('8')
}

The scientific method is that method that is open for argumentation and deals on common denominators.

Starting in ios 6 you can set an attributed string in the UILabel:

NSString *labelText = @"some text"; 
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:labelText];
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
[paragraphStyle setLineSpacing:40];
[attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [labelText length])];
cell.label.attributedText = attributedString ;

I tried this tool and it gave me good results.

https://github.com/major/MySQLTuner-perl

The Charset used in the POST will match that of the Charset specified in the HTML hosting the form. Hence if your form is sent using UTF-8 encoding that is the encoding used for the posted content. The URL encoding is applied after the values are converted to the set of octets for the character encoding.

A common use case I have is a dictionary of numpy arrays or lists where I know they're all the same length, and I just need to know one of them (e.g. I'm plotting timeseries data and each timeseries has the same number of timesteps). I often use this:

length = len(next(iter(d.values())))

The following will prevent all future AJAX requests from being cached, regardless of which jQuery method you use ($.get, $.ajax, etc.)

$.ajaxSetup({ cache: false });

Please use this one, the above does not work. I have tested in Window server 2003.

@echo off 
copy "C:\Remoting.config-Training" "C:\Remoting.config"
Start /I "" "C:\ThirdParty.exe"
exit

try this

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="@color/upkia"/>
<corners android:radius="10dp"
    android:topRightRadius="0dp"
    android:bottomRightRadius="0dp" />
</shape>

I use

SHOW CREATE TABLE mytable;

This shows you the SQL statement necessary to receate mytable in its current form. You can see all the columns and their types (like DESC) but it also shows you constraint information (and table type, charset, etc.).

I am working on an angular js app, andhavecome across a similar issue. What i did was display the image from the db, then created a button to remove or keep the current image. If the user decided to keep the current image, i changed the ng-submit attribute to another function whihc doesnt require image validation, and updated the record in the db without touching the original image path name. The remove image function also changed the ng-submit attribute value back to a function that submits the form and includes image validation and upload. Also a bit of javascript to slide the into view to upload a new image.

My two cents

1. Indexes can fail when not using the correct datatypes:
   In SQL Server: When you have an index over a VARCHAR column and present it a Unicode String, SQL Server does not make use of the index. The same thing happens when you present a BigInt to a indexed-column containing SmallInt. Even if the BigInt is small enough to be a SmallInt, SQL Server is not able to use the index. The other way around you do not have this problem (when providing SmallInt or Ansi-Code to an indexed BigInt ot NVARCHAR column).

2. Datatypes can vary between different DBMS's (DataBase Management System):
   Know that every database has slightly different datatypes and VARCHAR does not means the same everywhere. While SQL Server has VARCHAR and NVARCHAR, an Apache/Derby database has only VARCHAR and there VARCHAR is in Unicode.

Finalize

• Finalizers should always be protected, not public or private so that the method cannot be called from the application's code directly and at the same time, it can make a call to the base.Finalize method
• Finalizers should release unmanaged resources only.
• The framework does not guarantee that a finalizer will execute at all on any given instance.
• Never allocate memory in finalizers or call virtual methods from finalizers.
• Avoid synchronization and raising unhandled exceptions in the finalizers.
• The execution order of finalizers is non-deterministic—in other words, you can't rely on another object still being available within your finalizer.
• Do not define finalizers on value types.
• Don't create empty destructors. In other words, you should never explicitly define a destructor unless your class needs to clean up unmanaged resources and if you do define one, it should do some work. If, later, you no longer need to clean up unmanaged resources in the destructor, remove it altogether.

Dispose

• Implement IDisposable on every type that has a finalizer
• Ensure that an object is made unusable after making a call to the Dispose method. In other words, avoid using an object after the Dispose method has been called on it.
• Call Dispose on all IDisposable types once you are done with them
• Allow Dispose to be called multiple times without raising errors.
• Suppress later calls to the finalizer from within the Dispose method using the GC.SuppressFinalize method
• Avoid creating disposable value types
• Avoid throwing exceptions from within Dispose methods

Dispose/Finalized Pattern

• Microsoft recommends that you implement both Dispose and Finalize when working with unmanaged resources. The Finalize implementation would run and the resources would still be released when the object is garbage collected even if a developer neglected to call the Dispose method explicitly.
• Cleanup the unmanaged resources in the Finalize method as well as Dispose method. Additionally call the Dispose method for any .NET objects that you have as components inside that class(having unmanaged resources as their member) from the Dispose method.

It is best practice to go asynchronous if you can do several things in parallel (no inter-dependencies). If you need it to complete to continue loading the next thing you could use synchronous, but note that this option is deprecated to avoid abuse of sync:

jQuery.ajax() method's async option deprecated, what now?

The error happens because of you are trying to map a numeric vector to data in geom_errorbar: GVW[1:64,3]. ggplot only works with data.frame.

In general, you shouldn't subset inside ggplot calls. You are doing so because your standard errors are stored in four separate objects. Add them to your original data.frame and you will be able to plot everything in one call.

Here with a dplyr solution to summarise the data and compute the standard error beforehand.

library(dplyr)
d <- GVW %>% group_by(Genotype,variable) %>%
    summarise(mean = mean(value),se = sd(value) / sqrt(n()))

ggplot(d, aes(x = variable, y = mean, fill = Genotype)) + 
  geom_bar(position = position_dodge(), stat = "identity", 
      colour="black", size=.3) +
  geom_errorbar(aes(ymin = mean - se, ymax = mean + se), 
      size=.3, width=.2, position=position_dodge(.9)) +
  xlab("Time") +
  ylab("Weight [g]") +
  scale_fill_hue(name = "Genotype", breaks = c("KO", "WT"), 
      labels = c("Knock-out", "Wild type")) +
  ggtitle("Effect of genotype on weight-gain") +
  scale_y_continuous(breaks = 0:20*4) +
  theme_bw()

To those suggesting the use of margin-top or padding-top to move the main division below the fixed menu - you don't seem to be testing it completely.

If you set a margin or padding, it will scroll with the page and you will lose lines - go try this page

Looks good, does it not? Highlight a word on the bottom visible line and press page-down - the line with the highlighted word, and a few other lines, will be scrolled under the fixed division.

Margin-top or padding-top WILL position the main division below the fixed division but it all falls flat on its face when you page-down or click the scroll bar to scroll one viewport height of the page.

Same problem if you page-up, lines "fall off" the bottom of the view-port.

Does anyone have an actual fix for THIS problem?

I know how to position things - that's fairly easy if you know the basics about margins, padding, etc. - but how do you prevent the loss of lines when scrolling?

I've looked at a lot of examples of what are claimed to be a properly functioning pages with fixed divisions at the top, but they don't work! They all have problems which scrolling.

I have come across some pages appear to work but if the fixed division is made higher, lines will be lost. I believe I know why they appear to work.

Think in terms of how text on a totally normal (no fancy formatting) page scrolls. Do you see the bottom line when you scroll up or do you see the next line - the bottom one having scrolled off the top of the viewport?

Answer - you see the bottom line scrolled to become the top line.

The fixed menu pages that seem to work really don't. Scroll them and the bottom line is scrolled off the viewport but since the next line is visible, it appears that the fixed division works - but we know better, don't we?

If the fixed division gets higher than the height of one line of text, they fail and lines are lost.

The only pages that I've seen that actually work properly are on sites such as yahoo and I don't have the time, nor inclination, to dig down into what is a lot of CSS, HTML, and JavaScript on the pages to get to the heart of the matter.

So - go to that page and see if you can make changes ("inspect" the elements and make changes to the CSS rules) that fix the scrolling problems.

If you can, come back and share your discovery with world.

My page is a good place to look at what it takes to be able to fix a division at the top, center it (and the main division) and restrict it to a max-width. It may help some of you but I'm sorry I don't have a fix for the scrolling problem

Play with the height of the fix division - make it short enough so that only one line shows and then play with the scrolling. Then make it large enough for two lines and then three and play with the scrolling. You'll see the issues.

Here is a page that is supposed to work but it doesn't - read the very last comment - they describe the problem in a different way but it is the same problem

I just tested the page again in Chrome and it seems to work fairly satisfactorily. With FF the problem exists. Haven't tried IE again, yet.

So - what is different with FF?

Here's a page at cNet which works with chrome and ff - so what are they doing?

More testing with Chrome shows that it fails to fully display the bottom line when scrolled. Just part of the line that was at the bottom is visiable when your scroll - so, still need a fix.

You'll likely need to check the SQL Server error logs to determine the actual state (it's not reported to the client for security reasons.) See here for details.

By what you wrote, you are missing a critical piece of understanding: the difference between a class and an object. __init__ doesn't initialize a class, it initializes an instance of a class or an object. Each dog has colour, but dogs as a class don't. Each dog has four or fewer feet, but the class of dogs doesn't. The class is a concept of an object. When you see Fido and Spot, you recognise their similarity, their doghood. That's the class.

When you say

class Dog:
    def __init__(self, legs, colour):
        self.legs = legs
        self.colour = colour

fido = Dog(4, "brown")
spot = Dog(3, "mostly yellow")

You're saying, Fido is a brown dog with 4 legs while Spot is a bit of a cripple and is mostly yellow. The __init__ function is called a constructor, or initializer, and is automatically called when you create a new instance of a class. Within that function, the newly created object is assigned to the parameter self. The notation self.legs is an attribute called legs of the object in the variable self. Attributes are kind of like variables, but they describe the state of an object, or particular actions (functions) available to the object.

However, notice that you don't set colour for the doghood itself - it's an abstract concept. There are attributes that make sense on classes. For instance, population_size is one such - it doesn't make sense to count the Fido because Fido is always one. It does make sense to count dogs. Let us say there're 200 million dogs in the world. It's the property of the Dog class. Fido has nothing to do with the number 200 million, nor does Spot. It's called a "class attribute", as opposed to "instance attributes" that are colour or legs above.

Now, to something less canine and more programming-related. As I write below, class to add things is not sensible - what is it a class of? Classes in Python make up of collections of different data, that behave similarly. Class of dogs consists of Fido and Spot and 199999999998 other animals similar to them, all of them peeing on lampposts. What does the class for adding things consist of? By what data inherent to them do they differ? And what actions do they share?

However, numbers... those are more interesting subjects. Say, Integers. There's a lot of them, a lot more than dogs. I know that Python already has integers, but let's play dumb and "implement" them again (by cheating and using Python's integers).

So, Integers are a class. They have some data (value), and some behaviours ("add me to this other number"). Let's show this:

class MyInteger:
    def __init__(self, newvalue)
        # imagine self as an index card.
        # under the heading of "value", we will write
        # the contents of the variable newvalue.
        self.value = newvalue
    def add(self, other):
        # when an integer wants to add itself to another integer,
        # we'll take their values and add them together,
        # then make a new integer with the result value.
        return MyInteger(self.value + other.value)

three = MyInteger(3)
# three now contains an object of class MyInteger
# three.value is now 3
five = MyInteger(5)
# five now contains an object of class MyInteger
# five.value is now 5
eight = three.add(five)
# here, we invoked the three's behaviour of adding another integer
# now, eight.value is three.value + five.value = 3 + 5 = 8
print eight.value
# ==> 8

This is a bit fragile (we're assuming other will be a MyInteger), but we'll ignore now. In real code, we wouldn't; we'd test it to make sure, and maybe even coerce it ("you're not an integer? by golly, you have 10 nanoseconds to become one! 9... 8....")

We could even define fractions. Fractions also know how to add themselves.

class MyFraction:
    def __init__(self, newnumerator, newdenominator)
        self.numerator = newnumerator
        self.denominator = newdenominator
        # because every fraction is described by these two things
    def add(self, other):
        newdenominator = self.denominator * other.denominator
        newnumerator = self.numerator * other.denominator + self.denominator * other.numerator
        return MyFraction(newnumerator, newdenominator)

There's even more fractions than integers (not really, but computers don't know that). Let's make two:

half = MyFraction(1, 2)
third = MyFraction(1, 3)
five_sixths = half.add(third)
print five_sixths.numerator
# ==> 5
print five_sixths.denominator
# ==> 6

You're not actually declaring anything here. Attributes are like a new kind of variable. Normal variables only have one value. Let us say you write colour = "grey". You can't have another variable named colour that is "fuchsia" - not in the same place in the code.

Arrays solve that to a degree. If you say colour = ["grey", "fuchsia"], you have stacked two colours into the variable, but you distinguish them by their position (0, or 1, in this case).

Attributes are variables that are bound to an object. Like with arrays, we can have plenty colour variables, on different dogs. So, fido.colour is one variable, but spot.colour is another. The first one is bound to the object within the variable fido; the second, spot. Now, when you call Dog(4, "brown"), or three.add(five), there will always be an invisible parameter, which will be assigned to the dangling extra one at the front of the parameter list. It is conventionally called self, and will get the value of the object in front of the dot. Thus, within the Dog's __init__ (constructor), self will be whatever the new Dog will turn out to be; within MyInteger's add, self will be bound to the object in the variable three. Thus, three.value will be the same variable outside the add, as self.value within the add.

If I say the_mangy_one = fido, I will start referring to the object known as fido with yet another name. From now on, fido.colour is exactly the same variable as the_mangy_one.colour.

So, the things inside the __init__. You can think of them as noting things into the Dog's birth certificate. colour by itself is a random variable, could contain anything. fido.colour or self.colour is like a form field on the Dog's identity sheet; and __init__ is the clerk filling it out for the first time.

Any clearer?

EDIT: Expanding on the comment below:

You mean a list of objects, don't you?

First of all, fido is actually not an object. It is a variable, which is currently containing an object, just like when you say x = 5, x is a variable currently containing the number five. If you later change your mind, you can do fido = Cat(4, "pleasing") (as long as you've created a class Cat), and fido would from then on "contain" a cat object. If you do fido = x, it will then contain the number five, and not an animal object at all.

A class by itself doesn't know its instances unless you specifically write code to keep track of them. For instance:

class Cat:
    census = [] #define census array

    def __init__(self, legs, colour):
        self.colour = colour
        self.legs = legs
        Cat.census.append(self)

Here, census is a class-level attribute of Cat class.

fluffy = Cat(4, "white")
spark = Cat(4, "fiery")
Cat.census
# ==> [<__main__.Cat instance at 0x108982cb0>, <__main__.Cat instance at 0x108982e18>]
# or something like that

Note that you won't get [fluffy, sparky]. Those are just variable names. If you want cats themselves to have names, you have to make a separate attribute for the name, and then override the __str__ method to return this name. This method's (i.e. class-bound function, just like add or __init__) purpose is to describe how to convert the object to a string, like when you print it out.

An instance variable is a variable that is a member of an instance of a class (i.e., associated with something created with a new), whereas a class variable is a member of the class itself.

Every instance of a class will have its own copy of an instance variable, whereas there is only one of each static (or class) variable, associated with the class itself.

What’s the difference between a class variable and an instance variable?

This test class illustrates the difference:

public class Test {
   
    public static String classVariable = "I am associated with the class";
    public String instanceVariable = "I am associated with the instance";
    
    public void setText(String string){
        this.instanceVariable = string;
    }
    
    public static void setClassText(String string){
        classVariable = string;
    }
    
    public static void main(String[] args) {
        Test test1 = new Test();
        Test test2 = new Test();
        
        // Change test1's instance variable
        test1.setText("Changed");
        System.out.println(test1.instanceVariable); // Prints "Changed"
        // test2 is unaffected
        System.out.println(test2.instanceVariable); // Prints "I am associated with the instance"
        
        // Change class variable (associated with the class itself)
        Test.setClassText("Changed class text");
        System.out.println(Test.classVariable); // Prints "Changed class text"
        
        // Can access static fields through an instance, but there still is only one
        // (not best practice to access static variables through instance)
        System.out.println(test1.classVariable); // Prints "Changed class text"
        System.out.println(test2.classVariable); // Prints "Changed class text"
    }
}

In a maven project create a file src/main/resources/application.yml with the following content:

spring.profiles: integration
# use local or embedded mongodb at localhost:27017
---
spring.profiles: production
spring.data.mongodb.uri: mongodb://<user>:<passwd>@<host>:<port>/<dbname>

Spring Boot will automatically use this file to configure your application. Then you can start your spring boot application either with the integration profile (and use your local MongoDB)

java -jar -Dspring.profiles.active=integration your-app.jar

or with the production profile (and use your production MongoDB)

java -jar -Dspring.profiles.active=production your-app.jar

A wee bit beyond the scope of your question... but here's what I do.

The "how do I test a cron job?" question is closely connected to "how do I test scripts that run in non-interactive contexts launched by other programs?" In cron, the trigger is some time condition, but lots of other *nix facilities launch scripts or script fragments in non-interactive ways, and often the conditions in which those scripts run contain something unexpected and cause breakage until the bugs are sorted out. (See also: https://stackoverflow.com/a/17805088/237059 )

A general approach to this problem is helpful to have.

One of my favorite techniques is to use a script I wrote called 'crontest'. It launches the target command inside a GNU screen session from within cron, so that you can attach with a separate terminal to see what's going on, interact with the script, even use a debugger.

To set this up, you would use "all stars" in your crontab entry, and specify crontest as the first command on the command line, e.g.:

* * * * * crontest /command/to/be/tested --param1 --param2

So now cron will run your command every minute, but crontest will ensure that only one instance runs at a time. If the command takes time to run, you can do a "screen -x" to attach and watch it run. If the command is a script, you can put a "read" command at the top to make it stop and wait for the screen attachment to complete (hit enter after attaching)

If your command is a bash script, you can do this instead:

* * * * * crontest --bashdb /command/to/be/tested --param1 --param2

Now, if you attach with "screen -x", you'll be facing an interactive bashdb session, and you can step through the code, examine variables, etc.

#!/bin/bash

# crontest
# See https://github.com/Stabledog/crontest for canonical source.

# Test wrapper for cron tasks.  The suggested use is:
#
#  1. When adding your cron job, use all 5 stars to make it run every minute
#  2. Wrap the command in crontest
#        
#
#  Example:
#
#  $ crontab -e
#     * * * * * /usr/local/bin/crontest $HOME/bin/my-new-script --myparams
#
#  Now, cron will run your job every minute, but crontest will only allow one
#  instance to run at a time.  
#
#  crontest always wraps the command in "screen -d -m" if possible, so you can
#  use "screen -x" to attach and interact with the job.   
#
#  If --bashdb is used, the command line will be passed to bashdb.  Thus you
#  can attach with "screen -x" and debug the remaining command in context.
#
#  NOTES:
#   - crontest can be used in other contexts, it doesn't have to be a cron job.
#       Any place where commands are invoked without an interactive terminal and
#       may need to be debugged.
#
#   - crontest writes its own stuff to /tmp/crontest.log
#
#   - If GNU screen isn't available, neither is --bashdb
#

crontestLog=/tmp/crontest.log
lockfile=$(if [[ -d /var/lock ]]; then echo /var/lock/crontest.lock; else echo /tmp/crontest.lock; fi )
useBashdb=false
useScreen=$( if which screen &>/dev/null; then echo true; else echo false; fi )
innerArgs="$@"
screenBin=$(which screen 2>/dev/null)

function errExit {
    echo "[-err-] $@" | tee -a $crontestLog >&2
}

function log {
    echo "[-stat-] $@" >> $crontestLog
}

function parseArgs {
    while [[ ! -z $1 ]]; do
        case $1 in
            --bashdb)
                if ! $useScreen; then
                    errExit "--bashdb invalid in crontest because GNU screen not installed"
                fi
                if ! which bashdb &>/dev/null; then
                    errExit "--bashdb invalid in crontest: no bashdb on the PATH"
                fi

                useBashdb=true
                ;;
            --)
                shift
                innerArgs="$@"
                return 0
                ;;
            *)
                innerArgs="$@"
                return 0
                ;;
        esac
        shift
    done
}

if [[ -z  $sourceMe ]]; then
    # Lock the lockfile (no, we do not wish to follow the standard
    # advice of wrapping this in a subshell!)
    exec 9>$lockfile
    flock -n 9 || exit 1

    # Zap any old log data:
    [[ -f $crontestLog ]] && rm -f $crontestLog

    parseArgs "$@"

    log "crontest starting at $(date)"
    log "Raw command line: $@"
    log "Inner args: $@"
    log "screenBin: $screenBin"
    log "useBashdb: $( if $useBashdb; then echo YES; else echo no; fi )"
    log "useScreen: $( if $useScreen; then echo YES; else echo no; fi )"

    # Were building a command line.
    cmdline=""

    # If screen is available, put the task inside a pseudo-terminal
    # owned by screen.  That allows the developer to do a "screen -x" to
    # interact with the running command:
    if $useScreen; then
        cmdline="$screenBin -D -m "
    fi

    # If bashdb is installed and --bashdb is specified on the command line,
    # pass the command to bashdb.  This allows the developer to do a "screen -x" to
    # interactively debug a bash shell script:
    if $useBashdb; then
        cmdline="$cmdline $(which bashdb) "
    fi

    # Finally, append the target command and params:
    cmdline="$cmdline $innerArgs"

    log "cmdline: $cmdline"


    # And run the whole schlock:
    $cmdline 

    res=$?

    log "Command result: $res"


    echo "[-result-] $(if [[ $res -eq 0 ]]; then echo ok; else echo fail; fi)" >> $crontestLog

    # Release the lock:
    9<&-
fi

You haven't stated where you're looking for the element. If it's within the scope of a controller, it is possible, despite the chorus you'll hear about it not being the 'Angular Way'. The chorus is right, but sometimes, in the real world, it's unavoidable. (If you disagree, get in touch—I have a challenge for you.)

If you pass $element into a controller, like you would $scope, you can use its find() function. Note that, in the jQueryLite included in Angular, find() will only locate tags by name, not attribute. However, if you include the full-blown jQuery in your project, all the functionality of find() can be used, including finding by attribute.

So, for this HTML:

<div ng-controller='MyCtrl'>
    <div>
        <div name='foo' class='myElementClass'>this one</div>
    </div>
</div>

This AngularJS code should work:

angular.module('MyClient').controller('MyCtrl', [
    '$scope',
    '$element',
    '$log',
    function ($scope, $element, $log) {

        // Find the element by its class attribute, within your controller's scope
        var myElements = $element.find('.myElementClass');

        // myElements is now an array of jQuery DOM elements

        if (myElements.length == 0) {
            // Not found. Are you sure you've included the full jQuery?
        } else {
            // There should only be one, and it will be element 0
            $log.debug(myElements[0].name); // "foo"
        }

    }
]);

The same problem error happened to me when I tried to present a child view controller instead of its UINavigationViewController parent

You can use jQuery to do that for you.

 $(document).ready(function() {
   // put Ajax here.
 });

Check it here:

http://docs.jquery.com/Tutorials:Introducing_%24%28document%29.ready%28%29

As you can see in the documentation of JSHint you can change options per function or per file. In your case just place a comment in your file or even more local just in the function that uses eval:

/*jshint evil:true */

function helloEval(str) {
    /*jshint evil:true */
    eval(str);
}

The question is tagged SQL Server 2000 but for the benefit of people developing on the latest version I'll address that first.

SQL Server 2014

In addition to the methods of adding constraint based indexes discussed below SQL Server 2014 also allows non unique indexes to be specified directly with inline syntax on table variable declarations.

Example syntax for that is below.

/*SQL Server 2014+ compatible inline index syntax*/
DECLARE @T TABLE (
C1 INT INDEX IX1 CLUSTERED, /*Single column indexes can be declared next to the column*/
C2 INT INDEX IX2 NONCLUSTERED,
       INDEX IX3 NONCLUSTERED(C1,C2) /*Example composite index*/
);

Filtered indexes and indexes with included columns can not currently be declared with this syntax however SQL Server 2016 relaxes this a bit further. From CTP 3.1 it is now possible to declare filtered indexes for table variables. By RTM it may be the case that included columns are also allowed but the current position is that they "will likely not make it into SQL16 due to resource constraints"

/*SQL Server 2016 allows filtered indexes*/
DECLARE @T TABLE
(
c1 INT NULL INDEX ix UNIQUE WHERE c1 IS NOT NULL /*Unique ignoring nulls*/
)

SQL Server 2000 - 2012

Can I create a index on Name?

Short answer: Yes.

DECLARE @TEMPTABLE TABLE (
  [ID]   [INT] NOT NULL PRIMARY KEY,
  [Name] [NVARCHAR] (255) COLLATE DATABASE_DEFAULT NULL,
  UNIQUE NONCLUSTERED ([Name], [ID]) 
  ) 

A more detailed answer is below.

Traditional tables in SQL Server can either have a clustered index or are structured as heaps.

Clustered indexes can either be declared as unique to disallow duplicate key values or default to non unique. If not unique then SQL Server silently adds a uniqueifier to any duplicate keys to make them unique.

Non clustered indexes can also be explicitly declared as unique. Otherwise for the non unique case SQL Server adds the row locator (clustered index key or RID for a heap) to all index keys (not just duplicates) this again ensures they are unique.

In SQL Server 2000 - 2012 indexes on table variables can only be created implicitly by creating a UNIQUE or PRIMARY KEY constraint. The difference between these constraint types are that the primary key must be on non nullable column(s). The columns participating in a unique constraint may be nullable. (though SQL Server's implementation of unique constraints in the presence of NULLs is not per that specified in the SQL Standard). Also a table can only have one primary key but multiple unique constraints.

Both of these logical constraints are physically implemented with a unique index. If not explicitly specified otherwise the PRIMARY KEY will become the clustered index and unique constraints non clustered but this behavior can be overridden by specifying CLUSTERED or NONCLUSTERED explicitly with the constraint declaration (Example syntax)

DECLARE @T TABLE
(
A INT NULL UNIQUE CLUSTERED,
B INT NOT NULL PRIMARY KEY NONCLUSTERED
)

As a result of the above the following indexes can be implicitly created on table variables in SQL Server 2000 - 2012.

+-------------------------------------+-------------------------------------+
|             Index Type              | Can be created on a table variable? |
+-------------------------------------+-------------------------------------+
| Unique Clustered Index              | Yes                                 |
| Nonunique Clustered Index           |                                     |
| Unique NCI on a heap                | Yes                                 |
| Non Unique NCI on a heap            |                                     |
| Unique NCI on a clustered index     | Yes                                 |
| Non Unique NCI on a clustered index | Yes                                 |
+-------------------------------------+-------------------------------------+

The last one requires a bit of explanation. In the table variable definition at the beginning of this answer the non unique non clustered index on Name is simulated by a unique index on Name,Id (recall that SQL Server would silently add the clustered index key to the non unique NCI key anyway).

A non unique clustered index can also be achieved by manually adding an IDENTITY column to act as a uniqueifier.

DECLARE @T TABLE
(
A INT NULL,
B INT NULL,
C INT NULL,
Uniqueifier INT NOT NULL IDENTITY(1,1),
UNIQUE CLUSTERED (A,Uniqueifier)
)

But this is not an accurate simulation of how a non unique clustered index would normally actually be implemented in SQL Server as this adds the "Uniqueifier" to all rows. Not just those that require it.

Laravel 5 uses .env file to configure your app. .env should not be committed on your repository, like github or bitbucket. On your local environment your .env will look like the following:

# .env
APP_ENV=local

For your production server, you might have the following config:

# .env
APP_ENV=production

I'm using tesseract OCR engine with TessNet2 (a C# wrapper - http://www.pixel-technology.com/freeware/tessnet2/).

Some basic code:

using tessnet2;

...

Bitmap image = new Bitmap(@"u:\user files\bwalker\2849257.tif");
            tessnet2.Tesseract ocr = new tessnet2.Tesseract();
            ocr.SetVariable("tessedit_char_whitelist", "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.,$-/#&=()\"':?"); // Accepted characters
            ocr.Init(@"C:\Users\bwalker\Documents\Visual Studio 2010\Projects\tessnetWinForms\tessnetWinForms\bin\Release\", "eng", false); // Directory of your tessdata folder
            List<tessnet2.Word> result = ocr.DoOCR(image, System.Drawing.Rectangle.Empty);
            string Results = "";
            foreach (tessnet2.Word word in result)
            {
                Results += word.Confidence + ", " + word.Text + ", " + word.Left + ", " + word.Top + ", " + word.Bottom + ", " + word.Right + "\n";
            }

The name accepted into TR1 (and the draft for the next standard) is std::unordered_map, so if you have that available, it's probably the one you want to use.

Other than that, using it is a lot like using std::map, with the proviso that when/if you traverse the items in an std::map, they come out in the order specified by operator<, but for an unordered_map, the order is generally meaningless.

//if i input 9 it should go to 8?

You still have to work with the elements of the array. You will count 8 elements when looping through the array, but they are still going to be array(0) - array(7).

Try this Simple Steps....

NOTE: Please check device location latitude & logitude if you are using simulator means. By defaults its none only.

Step 1: Import CoreLocation framework in .h File

#import <CoreLocation/CoreLocation.h>

Step 2: Add delegate CLLocationManagerDelegate

@interface yourViewController : UIViewController<CLLocationManagerDelegate>
{
    CLLocationManager *locationManager;
    CLLocation *currentLocation;
}

Step 3: Add this code in class file

- (void)viewDidLoad
{
    [super viewDidLoad];
    [self CurrentLocationIdentifier]; // call this method
}

Step 4: Method to detect current location

//------------ Current Location Address-----
-(void)CurrentLocationIdentifier
{
    //---- For getting current gps location
    locationManager = [CLLocationManager new];
    locationManager.delegate = self;
    locationManager.distanceFilter = kCLDistanceFilterNone;
    locationManager.desiredAccuracy = kCLLocationAccuracyBest;
    [locationManager startUpdatingLocation];
    //------
}

Step 5: Get location using this method

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
    currentLocation = [locations objectAtIndex:0];
    [locationManager stopUpdatingLocation];
    CLGeocoder *geocoder = [[CLGeocoder alloc] init] ;
    [geocoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray *placemarks, NSError *error)
     {
         if (!(error))
         {
             CLPlacemark *placemark = [placemarks objectAtIndex:0];
             NSLog(@"\nCurrent Location Detected\n");
             NSLog(@"placemark %@",placemark);
             NSString *locatedAt = [[placemark.addressDictionary valueForKey:@"FormattedAddressLines"] componentsJoinedByString:@", "];
             NSString *Address = [[NSString alloc]initWithString:locatedAt];
             NSString *Area = [[NSString alloc]initWithString:placemark.locality];
             NSString *Country = [[NSString alloc]initWithString:placemark.country];
             NSString *CountryArea = [NSString stringWithFormat:@"%@, %@", Area,Country];
             NSLog(@"%@",CountryArea);
         }
         else
         {
             NSLog(@"Geocode failed with error %@", error);
             NSLog(@"\nCurrent Location Not Detected\n");
             //return;
             CountryArea = NULL;
         }
         /*---- For more results 
         placemark.region);
         placemark.country);
         placemark.locality); 
         placemark.name);
         placemark.ocean);
         placemark.postalCode);
         placemark.subLocality);
         placemark.location);
          ------*/
     }];
}

Since the answer above still leaves some people in the dark, here's what a complete webpack.config.js might look like:

var path = require('path');_x000D_
var config = {_x000D_
    entry: path.resolve(__dirname, 'app/main.js'),_x000D_
    output: {_x000D_
        path: path.resolve(__dirname, 'build'),_x000D_
        filename: 'bundle.js'_x000D_
    },_x000D_
    module: {_x000D_
        loaders: [{_x000D_
            test: /\.jsx?$/,_x000D_
            loader: 'babel',_x000D_
            query:_x000D_
            {_x000D_
                presets:['es2015', 'react']_x000D_
            }_x000D_
        }]_x000D_
    },_x000D_
_x000D_
};_x000D_
_x000D_
module.exports = config;

You can see a lot of screen sizes on this site.

Parsed list of screens:

From http://www.emirweb.com/ScreenDeviceStatistics.php

####################################################################################################
#    Filter out same-sized same-dp screens and width/height swap.
####################################################################################################
Size: 2560 x 1600 px (1280 x 800 dp) xhdpi
Size: 2048 x 1536 px (1024 x 768 dp) xhdpi
Size: 1920 x 1200 px (1442 x 901 dp) tvdpi
Size: 1920 x 1200 px (1280 x 800 dp) hdpi
Size: 1920 x 1200 px (960 x 600 dp) xhdpi
Size: 1920 x 1200 px (640 x 400 dp) xxhdpi
Size: 1920 x 1152 px (640 x 384 dp) xxhdpi
Size: 1920 x 1080 px (1920 x 1080 dp) mdpi
Size: 1920 x 1080 px (1280 x 720 dp) hdpi
Size: 1920 x 1080 px (960 x 540 dp) xhdpi
Size: 1920 x 1080 px (640 x 360 dp) xxhdpi
Size: 1600 x 1200 px (1066 x 800 dp) hdpi
Size: 1600 x 900 px (1600 x 900 dp) mdpi
Size: 1440 x 904 px (960 x 602 dp) hdpi
Size: 1366 x 768 px (1366 x 768 dp) mdpi
Size: 1360 x 768 px (1360 x 768 dp) mdpi
Size: 1280 x 960 px (640 x 480 dp) xhdpi
Size: 1280 x 800 px (1280 x 800 dp) mdpi
Size: 1280 x 800 px (961 x 600 dp) tvdpi
Size: 1280 x 800 px (853 x 533 dp) hdpi
Size: 1280 x 800 px (640 x 400 dp) xhdpi
Size: 1280 x 768 px (1280 x 768 dp) mdpi
Size: 1280 x 768 px (640 x 384 dp) xhdpi
Size: 1280 x 720 px (1280 x 720 dp) mdpi
Size: 1280 x 720 px (961 x 540 dp) tvdpi
Size: 1280 x 720 px (853 x 480 dp) hdpi
Size: 1280 x 720 px (640 x 360 dp) xhdpi
Size: 1279 x 720 px (639 x 360 dp) xhdpi
Size: 1152 x 720 px (1152 x 720 dp) mdpi
Size: 1080 x 607 px (720 x 404 dp) hdpi
Size: 1024 x 960 px (1024 x 960 dp) mdpi
Size: 1024 x 770 px (1024 x 770 dp) mdpi
Size: 1024 x 768 px (1365 x 1024 dp) ldpi
Size: 1024 x 768 px (1024 x 768 dp) mdpi
Size: 1024 x 768 px (512 x 384 dp) xhdpi
Size: 1024 x 600 px (1365 x 800 dp) ldpi
Size: 1024 x 600 px (1024 x 600 dp) mdpi
Size: 1024 x 600 px (682 x 400 dp) hdpi
Size: 960 x 640 px (480 x 320 dp) xhdpi
Size: 960 x 600 px (960 x 600 dp) ldpi
Size: 960 x 540 px (640 x 360 dp) hdpi
Size: 864 x 480 px (576 x 320 dp) hdpi
Size: 854 x 480 px (569 x 320 dp) hdpi
Size: 800 x 600 px (1066 x 800 dp) ldpi
Size: 800 x 480 px (1066 x 640 dp) ldpi
Size: 800 x 480 px (800 x 480 dp) mdpi
Size: 800 x 480 px (600 x 360 dp) tvdpi
Size: 800 x 480 px (533 x 320 dp) hdpi
Size: 800 x 480 px (266 x 160 dp) xxhdpi
Size: 768 x 576 px (768 x 576 dp) mdpi
Size: 640 x 480 px (640 x 480 dp) mdpi
Size: 640 x 360 px (426 x 240 dp) hdpi
Size: 480 x 320 px (480 x 320 dp) mdpi
Size: 480 x 320 px (320 x 213 dp) hdpi
Size: 432 x 240 px (576 x 320 dp) ldpi
Size: 400 x 240 px (533 x 320 dp) ldpi
Size: 320 x 240 px (426 x 320 dp) ldpi
Size: 280 x 280 px (186 x 186 dp) hdpi

####################################################################################################
#    Sorted by smallest width.
####################################################################################################
sw800dp:
Size: 1920 x 1080 px (1920 x 1080 dp) mdpi
Size: 1024 x 768 px (1365 x 1024 dp) ldpi
Size: 1024 x 960 px (1024 x 960 dp) mdpi
Size: 1920 x 1200 px (1442 x 901 dp) tvdpi
Size: 1600 x 900 px (1600 x 900 dp) mdpi
Size: 800 x 600 px (1066 x 800 dp) ldpi
Size: 1920 x 1200 px (1280 x 800 dp) hdpi
Size: 1024 x 600 px (1365 x 800 dp) ldpi
Size: 2560 x 1600 px (1280 x 800 dp) xhdpi
Size: 1280 x 800 px (1280 x 800 dp) mdpi
Size: 1600 x 1200 px (1066 x 800 dp) hdpi

sw720dp:
Size: 1024 x 770 px (1024 x 770 dp) mdpi
Size: 1366 x 768 px (1366 x 768 dp) mdpi
Size: 1280 x 768 px (1280 x 768 dp) mdpi
Size: 2048 x 1536 px (1024 x 768 dp) xhdpi
Size: 1360 x 768 px (1360 x 768 dp) mdpi
Size: 1024 x 768 px (1024 x 768 dp) mdpi
Size: 1152 x 720 px (1152 x 720 dp) mdpi
Size: 1280 x 720 px (1280 x 720 dp) mdpi
Size: 1920 x 1080 px (1280 x 720 dp) hdpi

sw600dp:
Size: 800 x 480 px (1066 x 640 dp) ldpi
Size: 1440 x 904 px (960 x 602 dp) hdpi
Size: 960 x 600 px (960 x 600 dp) ldpi
Size: 1280 x 800 px (961 x 600 dp) tvdpi
Size: 1024 x 600 px (1024 x 600 dp) mdpi
Size: 1920 x 1200 px (960 x 600 dp) xhdpi

sw480dp:
Size: 768 x 576 px (768 x 576 dp) mdpi
Size: 1920 x 1080 px (960 x 540 dp) xhdpi
Size: 1280 x 720 px (961 x 540 dp) tvdpi
Size: 1280 x 800 px (853 x 533 dp) hdpi
Size: 1280 x 720 px (853 x 480 dp) hdpi
Size: 800 x 480 px (800 x 480 dp) mdpi
Size: 1280 x 960 px (640 x 480 dp) xhdpi
Size: 640 x 480 px (640 x 480 dp) mdpi

sw320dp:
Size: 1080 x 607 px (720 x 404 dp) hdpi
Size: 1024 x 600 px (682 x 400 dp) hdpi
Size: 1280 x 800 px (640 x 400 dp) xhdpi
Size: 1920 x 1200 px (640 x 400 dp) xxhdpi
Size: 1280 x 768 px (640 x 384 dp) xhdpi
Size: 1024 x 768 px (512 x 384 dp) xhdpi
Size: 1920 x 1152 px (640 x 384 dp) xxhdpi
Size: 1279 x 720 px (639 x 360 dp) xhdpi
Size: 800 x 480 px (600 x 360 dp) tvdpi
Size: 960 x 540 px (640 x 360 dp) hdpi
Size: 1920 x 1080 px (640 x 360 dp) xxhdpi
Size: 1280 x 720 px (640 x 360 dp) xhdpi
Size: 432 x 240 px (576 x 320 dp) ldpi
Size: 800 x 480 px (533 x 320 dp) hdpi
Size: 960 x 640 px (480 x 320 dp) xhdpi
Size: 864 x 480 px (576 x 320 dp) hdpi
Size: 854 x 480 px (569 x 320 dp) hdpi
Size: 480 x 320 px (480 x 320 dp) mdpi
Size: 400 x 240 px (533 x 320 dp) ldpi
Size: 320 x 240 px (426 x 320 dp) ldpi

sw240dp:
Size: 640 x 360 px (426 x 240 dp) hdpi

lower:
Size: 480 x 320 px (320 x 213 dp) hdpi
Size: 280 x 280 px (186 x 186 dp) hdpi
Size: 800 x 480 px (266 x 160 dp) xxhdpi

####################################################################################################
#    Different size in px only.
####################################################################################################
2560 x 1600 px
2048 x 1536 px
1920 x 1200 px
1920 x 1152 px
1920 x 1080 px
1600 x 1200 px
1600 x 900 px
1440 x 904 px
1366 x 768 px
1360 x 768 px
1280 x 960 px
1280 x 800 px
1280 x 768 px
1280 x 720 px
1279 x 720 px
1152 x 720 px
1080 x 607 px
1024 x 960 px
1024 x 770 px
1024 x 768 px
1024 x 600 px
960 x 640 px
960 x 600 px
960 x 540 px
864 x 480 px
854 x 480 px
800 x 600 px
800 x 480 px
768 x 576 px
640 x 480 px
640 x 360 px
480 x 320 px
432 x 240 px
400 x 240 px
320 x 240 px
280 x 280 px

####################################################################################################
#    Different size in dp only.
####################################################################################################
1920 x 1080 dp
1600 x 900 dp
1442 x 901 dp
1366 x 768 dp
1365 x 1024 dp
1365 x 800 dp
1360 x 768 dp
1280 x 800 dp
1280 x 768 dp
1280 x 720 dp
1152 x 720 dp
1066 x 800 dp
1066 x 640 dp
1024 x 960 dp
1024 x 770 dp
1024 x 768 dp
1024 x 600 dp
961 x 600 dp
961 x 540 dp
960 x 602 dp
960 x 600 dp
960 x 540 dp
853 x 533 dp
853 x 480 dp
800 x 480 dp
768 x 576 dp
720 x 404 dp
682 x 400 dp
640 x 480 dp
640 x 400 dp
640 x 384 dp
640 x 360 dp
639 x 360 dp
600 x 360 dp
576 x 320 dp
569 x 320 dp
533 x 320 dp
512 x 384 dp
480 x 320 dp
426 x 320 dp
426 x 240 dp
320 x 213 dp
266 x 160 dp
186 x 186 dp

I drop a lot of same-sized same-dp screens, ignore height/width swap and include some sorting results.

Mutable objects have fields that can be changed, immutable objects have no fields that can be changed after the object is created.

A very simple immutable object is a object without any field. (For example a simple Comparator Implementation).

class Mutable{
  private int value;

  public Mutable(int value) {
     this.value = value;
  }

  //getter and setter for value
}

class Immutable {
  private final int value;

  public Immutable(int value) {
     this.value = value;
  }

  //only getter
}

Search across files - Press Ctrl+Shift+F

Find - Press Ctrl+F

Find and Replace - Ctrl+H

For basic editing options follow this link - https://code.visualstudio.com/docs/editor/codebasics

Note : For mac the Ctrl represents the command button

after including bootstrap.min.js or uncompressed one, you can just add interval as a parameter as below jQuery("#numbers").carousel({'interval':900 }); It works for me

There are two tools to look at, depending on how you created the dump file.

Your first source of reference should be the man page pg_dump(1) as that is what creates the dump itself. It says:

Dumps can be output in script or archive file formats. Script dumps are plain-text files containing the SQL commands required to reconstruct the database to the state it was in at the time it was saved. To restore from such a script, feed it to psql(1). Script files can be used to reconstruct the database even on other machines and other architectures; with some modifications even on other SQL database products.

The alternative archive file formats must be used with pg_restore(1) to rebuild the database. They allow pg_restore to be selective about what is restored, or even to reorder the items prior to being restored. The archive file formats are designed to be portable across architectures.

So depends on the way it was dumped out. You can probably figure it out using the excellent file(1) command - if it mentions ASCII text and/or SQL, it should be restored with psql otherwise you should probably use pg_restore

Restoring is pretty easy:

psql -U username -d dbname < filename.sql

-- For Postgres versions 9.0 or earlier
psql -U username -d dbname -1 -f filename.sql

or

pg_restore -U username -d dbname -1 filename.dump

Check out their respective manpages - there's quite a few options that affect how the restore works. You may have to clean out your "live" databases or recreate them from template0 (as pointed out in a comment) before restoring, depending on how the dumps were generated.

Erik Aigner,

Please use $dirty(The field has been modified) and $invalid (The field content is not valid).

Please check below examples for angular form validation

1)

Validation example HTML for user enter inputs:

<form  ng-app="myApp"  ng-controller="validateCtrl" name="myForm" novalidate>
  <p>Email:<br>
    <input type="email" name="email" ng-model="email" required>
    <span ng-show="myForm.email.$dirty && myForm.email.$invalid">
      <span ng-show="myForm.email.$error.required">Email is required.</span>
      <span ng-show="myForm.email.$error.email">Invalid email address.</span>
      </span>
  </p>
    </form>

2)

Validation example HTML/Js for user submits :

      <form  ng-app="myApp"  ng-controller="validateCtrl" name="myForm" novalidate form-submit-validation="">
      <p>Email:<br>
        <input type="email" name="email" ng-model="email" required>
        <span ng-show="submitted || myForm.email.$dirty && myForm.email.$invalid">
          <span ng-show="myForm.email.$error.required">Email is required.</span>
          <span ng-show="myForm.email.$error.email">Invalid email address.</span>
          </span>
      </p>
<p>
  <input type="submit">
</p>
</form>

Custom Directive :

app.directive('formSubmitValidation', function () {

        return {
            require: 'form',
            compile: function (tElem, tAttr) {

                tElem.data('augmented', true);

                return function (scope, elem, attr, form) {
                    elem.on('submit', function ($event) {
                        scope.$broadcast('form:submit', form);

                        if (!form.$valid) {
                            $event.preventDefault();
                        }
                        scope.$apply(function () {
                            scope.submitted = true;
                        });


                    });
                }
            }
        };


  })

3)

you don't want use directive use ng-change function like below

  <form  ng-app="myApp"  ng-controller="validateCtrl" name="myForm" novalidate ng-change="submitFun()">
      <p>Email:<br>
        <input type="email" name="email" ng-model="email" required>
        <span ng-show="submitted || myForm.email.$dirty && myForm.email.$invalid">
          <span ng-show="myForm.email.$error.required">Email is required.</span>
          <span ng-show="myForm.email.$error.email">Invalid email address.</span>
          </span>
      </p>
<p>
  <input type="submit">
</p>
</form>

Controller SubmitFun() JS:

 var app = angular.module('example', []);
 app.controller('exampleCntl', function($scope) {
 $scope.submitFun = function($event) {
 $scope.submitted = true;
  if (!$scope.myForm.$valid) 
  {
        $event.preventDefault();
   }
  }

});

You could either do:

public class Data {
    private int[] data;

    public Data() {
        data = new int[]{0, 0, 0};
    }
}

Which initializes data in the constructor, or:

public class Data {
    private int[] data = new int[]{0, 0, 0};

    public Data() {
        // data already initialised
    }
}

Which initializes data before the code in the constructor is executed.