It means you have a null reference somewhere in there. Can you debug the app and stop the debugger when it gets here and investigate? Probably img1 is null or ConfigurationManager.AppSettings.Get("Url") is returning null.

Unfortunately, the offered solution doesn't work in Safari 10+, since Apple has decided to ignore user-scalable=no. This thread has more details and some JS hacks: disable viewport zooming iOS 10+ safari?

native mapkit is supported in Titanium

The OP's code snippet clearly uses the correct comment markup but CSS can break in a progressive way — so, if there's a syntax error, everything after that is likely to fail. A couple times I've relied on trustworthy sources that supplied incorrect comment markup that broke my style sheet. Since the OP provided just a small section of their code, I'd suggest the following:

Make sure all of your CSS comments use this markup /* ... */ -- which is the correct comment markup for css according to MDN

Validate your css with a linter or a secure online validator. Here's one by W3

More info: I went to check the latest recommended media query breakpoints from bootstrap 4 and ended up copying the boiler plate straight from their docs. Almost every code block was labeled with javascript-style comments //, which broke my code — and gave me only cryptic compile errors with which to troubleshoot, which went over my head at the time and caused me sadness.

IntelliJ text editor allowed me to comment out specific lines of css in a LESS file using the ctrl+/ hotkey which was great except it inserts // by default on unrecognized file types. It isn't freeware and less is fairly mainstream so I trusted it and went with it. That broke my code. There's a preference menu for teaching it the correct comment markup for each filetype.

Take a look at this... http://getbootstrap.com/

For big websites I use Bootstrap and sometimes (for simple websites) I create all the style with some @mediaqueries. It's very simple, just think all the code in percentage.

.container {
max-width: 1200px;
width: 100%;
margin: 0 auto;
}

Inside the container, your structure must have widths in percentage like this...

.col-1 {
width: 40%;
float: left;
}

.col-2 {
width: 60%;
float: left;
}

@media screen and (max-width: 320px) {
.col-1, .col-2 { width: 100%; }
}

In some simple interfaces, if you start to develop the project in this way, you will have great chances to have a fully responsive site using break points only to adjust the flow of objects.

I've found this answer over here on stackoverflow which works perfectly for me:

use this in style

body {
    overflow-x: hidden;
    width: 100%;
}

Use this in head tag

<meta name="viewport" content="user-scalable=no, width=device-width, initial-scale=1.0" />
<meta name="apple-mobile-web-app-capable" content="yes" />

A slight addition of mine in case your body has padding (to prevent the device from scaling to the body content-box, and thus still adding a horizontal scrollbar):

body {
    overflow-x: hidden;
    width: 100%;
    -webkit-box-sizing: border-box;
       -moz-box-sizing: border-box;
            box-sizing: border-box;
}

Best solution to this is css/html: Make a div to wrap your elements in, if you dont have it already And set it to position fixed and overflow hidden. Optional, set height and width to 100% if you want it to fill the whole screen and nothing but the whole screen

#wrapper{_x000D_
  height: 100%;_x000D_
  width: 100%;_x000D_
  position: fixed;_x000D_
  overflow: hidden;_x000D_
}

<div id="wrapper">_x000D_
  <p>All</p>_x000D_
  <p>Your</p>_x000D_
  <p>Elements</p>_x000D_
</div>

New API's are developing (and are currently available)!

screen.orientation.lock();   // webkit only

and

screen.lockOrientation("orientation");

Where "orientation" can be any of the following:

portrait-primary - It represents the orientation of the screen when it is in its primary portrait mode. A screen is considered in its primary portrait mode if the device is held in its normal position and that position is in portrait, or if the normal position of the device is in landscape and the device held turned by 90° clockwise. The normal position is device dependant.

portrait-secondary - It represents the orientation of the screen when it is in its secondary portrait mode. A screen is considered in its secondary portrait mode if the device is held 180° from its normal position and that position is in portrait, or if the normal position of the device is in landscape and the device held is turned by 90° anticlockwise. The normal position is device dependant.

landscape-primary - It represents the orientation of the screen when it is in its primary landscape mode. A screen is considered in its primary landscape mode if the device is held in its normal position and that position is in landscape, or if the normal position of the device is in portrait and the device held is turned by 90° clockwise. The normal position is device dependant.

landscape-secondary - It represents the orientation of the screen when it is in its secondary landscape mode. A screen is considered in its secondary landscape mode if the device held is 180° from its normal position and that position is in landscape, or if the normal position of the device is in portrait and the device held is turned by 90° anticlockwise. The normal position is device dependant.

portrait - It represents both portrait-primary and portrait-secondary.

landscape - It represents both landscape-primary and landscape-secondary.

default - It represents either portrait-primary and landscape-primary depends on natural orientation of devices. For example, if the panel resolution is 1280*800, default will make it landscape, if the resolution is 800*1280, default will make it to portrait.

Mozilla recommends adding a lockOrientationUniversal to screen to make it more cross-browser compatible.

screen.lockOrientationUniversal = screen.lockOrientation || screen.mozLockOrientation || screen.msLockOrientation;

Go here for more info: https://developer.mozilla.org/en-US/docs/Web/API/Screen/lockOrientation

i used this code and it works fine for me, just change +92xxxxxxxxxx to your valid whatsapp number, with country code

<script type="text/javascript">
        (function () {
            var options = {
                whatsapp: "+92xxxxxxxxxx", // WhatsApp number
                call_to_action: "Message us", // Call to action
                position: "right", // Position may be 'right' or 'left'

            };
            var proto = document.location.protocol, host = "whatshelp.io", url = proto + "//static." + host;
            var s = document.createElement('script'); s.type = 'text/javascript'; s.async = true; s.src = url + '/widget-send-button/js/init.js';
            s.onload = function () { WhWidgetSendButton.init(host, proto, options); };
            var x = document.getElementsByTagName('script')[0]; x.parentNode.insertBefore(s, x);
        })();
    </script> 

max-device-width is the device rendering width

@media all and (max-device-width: 400px) {
    /* styles for devices with a maximum width of 400px and less
       Changes only on device orientation */
}

@media all and (max-width: 400px) {
    /* styles for target area with a maximum width of 400px and less
       Changes on device orientation , browser resize */
}

The max-width is the width of the target display area means the current size of browser.

An SMS Push is a message to tell the terminal to initiate the session. This happens because you can't initiate an IP session simply because you don't know the IP Adress of the mobile terminal. Mostly used to send a few lines of data to end recipient, to the effect of sending information, or reminding of events.

WAP Push is an SMS within the header of which is included a link to a WAP address. On receiving a WAP Push, the compatible mobile handset automatically gives the user the option to access the WAP content on his handset. The WAP Push directs the end-user to a WAP address where content is stored ready for viewing or downloading onto the handset. This wap address may be a page or a WAP site.

The user may “take action” by using a developer-defined soft-key to immediately activate an application to accomplish a specific task, such as downloading a picture, making a purchase, or responding to a marketing offer.

When it is the case that you want to use any kind of external file, there is certainly a way to put them in a folder within your project, but not as valid as getting them from resources. In a regular Visual Studio project, you should have a Resources.resx file under the Properties section, if not, you can easily add your own Resource.resx file. And add any kind of file in it, you can reach the walkthrough for adding resource files to your project here.

After having resource files in your project, calling them is easy as this:

var myIcon = Resources.MyIconFile;

Of course you should add the using Properties statement like this:

using <namespace>.Properties;

This occurred for me when I had a source ip constraint on the policy being used by the user (access key / secret key) to create the s3 bucket. My IP was accurate--but for some reason it wouldn't work and gave this error.

For simplicity, why not create the backup table from the select statement?

CREATE TABLE t1_backup AS SELECT a, b FROM t1;
DROP TABLE t1;
ALTER TABLE t1_backup RENAME TO t1;

Assuming that pwd is just an example, this is how you can do it:

import subprocess

p = subprocess.Popen("pwd", stdout=subprocess.PIPE)
result = p.communicate()[0]
print result

See the subprocess documentation for another example and more information.

This is the related github issue This bug is related to the 2.0.0 version, you can solve it by simply upgrading to version 2.1.0. You can run npm i [email protected]

Thread.State enum class and the new getState() API are provided for querying the execution state of a thread.

A thread can be in only one state at a given point in time. These states are virtual machine states which do not reflect any operating system thread states [NEW, RUNNABLE, BLOCKED, WAITING, TIMED_WAITING, TERMINATED].

enum Thread.State extends Enum implements Serializable, Comparable

• getState()^jdk5 - public State getState() {...} « Returns the state of this thread. This method is designed for use in monitoring of the system state, not for synchronization control.

• isAlive() - public final native boolean isAlive(); « Returns true if the thread upon which it is called is still alive, otherwise it returns false. A thread is alive if it has been started and has not yet died.

Sample Source Code's of classes java.lang.Thread and sun.misc.VM.

package java.lang;
public class Thread implements Runnable {
    public final native boolean isAlive();

    // Java thread status value zero corresponds to state "NEW" - 'not yet started'.
    private volatile int threadStatus = 0;

    public enum State {
        NEW, RUNNABLE, BLOCKED, WAITING, TIMED_WAITING, TERMINATED;
    }

    public State getState() {
        return sun.misc.VM.toThreadState(threadStatus);
    }
}

package sun.misc;
public class VM {
    // ...
    public static Thread.State toThreadState(int threadStatus) {
        if ((threadStatus & JVMTI_THREAD_STATE_RUNNABLE) != 0) {
            return Thread.State.RUNNABLE;
        } else if ((threadStatus & JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER) != 0) {
            return Thread.State.BLOCKED;
        } else if ((threadStatus & JVMTI_THREAD_STATE_WAITING_INDEFINITELY) != 0) {
            return Thread.State.WAITING;
        } else if ((threadStatus & JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT) != 0) {
            return Thread.State.TIMED_WAITING;
        } else if ((threadStatus & JVMTI_THREAD_STATE_TERMINATED) != 0) {
            return Thread.State.TERMINATED;
        } else if ((threadStatus & JVMTI_THREAD_STATE_ALIVE) == 0) {
            return Thread.State.NEW;
        } else {
            return Thread.State.RUNNABLE;
        }
    }
}

Example with java.util.concurrent.CountDownLatch to execute multiple threads parallel, After completing all threads main thread execute. (until parallel threads complete their task main thread will be blocked.)

public class MainThread_Wait_TillWorkerThreadsComplete {
    public static void main(String[] args) throws InterruptedException {
        System.out.println("Main Thread Started...");
        // countDown() should be called 4 time to make count 0. So, that await() will release the blocking threads.
        int latchGroupCount = 4;
        CountDownLatch latch = new CountDownLatch(latchGroupCount);
        new Thread(new Task(2, latch), "T1").start();
        new Thread(new Task(7, latch), "T2").start();
        new Thread(new Task(5, latch), "T3").start();
        new Thread(new Task(4, latch), "T4").start();

        //latch.countDown(); // Decrements the count of the latch group.

        // await() method block until the current count reaches to zero
        latch.await(); // block until latchGroupCount is 0
        System.out.println("Main Thread completed.");
    }
}
class Task extends Thread {
    CountDownLatch latch;
    int iterations = 10;
    public Task(int iterations, CountDownLatch latch) {
        this.iterations = iterations;
        this.latch = latch;
    }
    @Override
    public void run() {
        String threadName = Thread.currentThread().getName();
        System.out.println(threadName + " : Started Task...");
        for (int i = 0; i < iterations; i++) {
            System.out.println(threadName + " : "+ i);
            sleep(1);
        }
        System.out.println(threadName + " : Completed Task");
        latch.countDown(); // Decrements the count of the latch,
    }
    public void sleep(int sec) {
        try {
            Thread.sleep(1000 * sec);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}

@See also

• “implements Runnable” vs. “extends Thread”
• Thread States
• Thread States Diagram
• How to start two threads at “exactly” the same time

As @TechSpellBound suggested remove the quotes around the ? signs. Then add a space character at the end of each row in your concatenated string. Otherwise the entire query will be sent as (using only part of it as an example) : .... WHERE bookings.booking_end < date ?OR bookings.booking_start > date ?GROUP BY ....

The ? and the OR needs to be seperated by a space character. Do it wherever needed in the query string.

From plt.imshow() official guide, we know that aspect controls the aspect ratio of the axes. Well in my words, the aspect is exactly the ratio of x unit and y unit. Most of the time we want to keep it as 1 since we do not want to distort out figures unintentionally. However, there is indeed cases that we need to specify aspect a value other than 1. The questioner provided a good example that x and y axis may have different physical units. Let's assume that x is in km and y in m. Hence for a 10x10 data, the extent should be [0,10km,0,10m] = [0, 10000m, 0, 10m]. In such case, if we continue to use the default aspect=1, the quality of the figure is really bad. We can hence specify aspect = 1000 to optimize our figure. The following codes illustrate this method.

%matplotlib inline
import numpy as np
import matplotlib.pyplot as plt
rng=np.random.RandomState(0)
data=rng.randn(10,10)
plt.imshow(data, origin = 'lower',  extent = [0, 10000, 0, 10], aspect = 1000)

Nevertheless, I think there is an alternative that can meet the questioner's demand. We can just set the extent as [0,10,0,10] and add additional xy axis labels to denote the units. Codes as follows.

plt.imshow(data, origin = 'lower',  extent = [0, 10, 0, 10])
plt.xlabel('km')
plt.ylabel('m')

To make a correct figure, we should always bear in mind that x_max-x_min = x_res * data.shape[1] and y_max - y_min = y_res * data.shape[0], where extent = [x_min, x_max, y_min, y_max]. By default, aspect = 1, meaning that the unit pixel is square. This default behavior also works fine for x_res and y_res that have different values. Extending the previous example, let's assume that x_res is 1.5 while y_res is 1. Hence extent should equal to [0,15,0,10]. Using the default aspect, we can have rectangular color pixels, whereas the unit pixel is still square!

plt.imshow(data, origin = 'lower',  extent = [0, 15, 0, 10])
# Or we have similar x_max and y_max but different data.shape, leading to different color pixel res.
data=rng.randn(10,5)
plt.imshow(data, origin = 'lower',  extent = [0, 5, 0, 5])

The aspect of color pixel is x_res / y_res. setting its aspect to the aspect of unit pixel (i.e. aspect = x_res / y_res = ((x_max - x_min) / data.shape[1]) / ((y_max - y_min) / data.shape[0])) would always give square color pixel. We can change aspect = 1.5 so that x-axis unit is 1.5 times y-axis unit, leading to a square color pixel and square whole figure but rectangular pixel unit. Apparently, it is not normally accepted.

data=rng.randn(10,10)
plt.imshow(data, origin = 'lower',  extent = [0, 15, 0, 10], aspect = 1.5)

The most undesired case is that set aspect an arbitrary value, like 1.2, which will lead to neither square unit pixels nor square color pixels.

plt.imshow(data, origin = 'lower',  extent = [0, 15, 0, 10], aspect = 1.2)

Long story short, it is always enough to set the correct extent and let the matplotlib do the remaining things for us (even though x_res!=y_res)! Change aspect only when it is a must.

You can use DataGridViewColoumnHeaderMouseClick event like this :

Private string order = String.Empty;
private void dgvDepartment_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
    if (order == "d")
{
        order = "a";                
dataGridView1.DataSource = students.Select(s => new { ID = s.StudentId, RUDE = s.RUDE, Nombre = s.Name, Apellidos = s.LastNameFather + " " + s.LastNameMother, Nacido = s.DateOfBirth })   .OrderBy(s => s.Apellidos).ToList();
    }
    else
    {
        order = "d";
        dataGridView1.DataSource = students.Select(s => new { ID = s.StudentId, RUDE = s.RUDE, Nombre = s.Name, Apellidos = s.LastNameFather + " " + s.LastNameMother, Nacido = s.DateOfBirth }.OrderByDescending(s => s.Apellidos)  .ToList()
    }
}

1) == evaluates reference equality in this case
2) im not too sure about the equals, but why not simply overriding the compare method and plant it inside MyClass?

As aditional information on @Quentin answer, and as he rightly says, background CSS property itself, is a shorthand for:

background-color
background-image
background-repeat
background-attachment
background-position

That's mean, you can group all styles in one, like:

background: red url(../img.jpg) 0 0 no-repeat fixed;

This would be (in this example):

background-color: red;
background-image: url(../img.jpg);
background-repeat: no-repeat;
background-attachment: fixed;
background-position: 0 0;

So... when you set: background:none;
you are saying that all the background properties are set to none...
You are saying that background-image: none; and all the others to the initial state (as they are not being declared).
So, background:none; is:

background-color: initial;
background-image: none;
background-repeat: initial;
background-attachment: initial;
background-position: initial;

Now, when you define only the color (in your case transparent) then you are basically saying:

background-color: transparent;
background-image: initial;
background-repeat: initial;
background-attachment: initial;
background-position: initial;

I repeat, as @Quentin rightly says the default transparent and none values in this case are the same, so in your example and for your original question, No, there's no difference between them.

But!.. if you say background:none Vs background:red then yes... there's a big diference, as I say, the first would set all properties to none/default and the second one, will only change the color and remains the rest in his default state.

So in brief:

Short answer: No, there's no difference at all (in your example and orginal question)
Long answer: Yes, there's a big difference, but depends directly on the properties granted to attribute.

Upd1: Initial value (aka default)

Initial value the concatenation of the initial values of its longhand properties:

background-image: none
background-position: 0% 0%
background-size: auto auto
background-repeat: repeat
background-origin: padding-box
background-style: is itself a shorthand, its initial value is the concatenation of its own longhand properties
background-clip: border-box
background-color: transparent

See more background descriptions here

Upd2: Clarify better the background:none; specification.

Answer according to current version of express

If you talk about the current version of express, if you run app.listen() to start listening without specifying port, Express will chose a random port for your application, to find out about which port it is currently running on use

app.listen(0, () => {
    console.log(app.address().port)
}

should output the port of your app. Moreover that first parameter 0 can be totally ignored but is not recommended

Just want to mention another option here.

You can compute the coefficients using numpy.polyfit(), and feed the coefficients to numpy.poly1d(). This function can construct polynomials using the coefficients, you can find more examples here

https://docs.scipy.org/doc/numpy-1.13.0/reference/generated/numpy.poly1d.html

Let's say, given two data points (-0.3, -0.5) and (0.8, 0.8)

import numpy as np
import matplotlib.pyplot as plt

# compute coefficients
coefficients = np.polyfit([-0.3, 0.8], [-0.5, 0.8], 1) 

# create a polynomial object with the coefficients
polynomial = np.poly1d(coefficients)

# for the line to extend beyond the two points, 
# create the linespace using the min and max of the x_lim
# I'm using -1 and 1 here
x_axis = np.linspace(-1, 1)

# compute the y for each x using the polynomial
y_axis = polynomial(x_axis)

fig = plt.figure()
axes = fig.add_axes([0.1, 0.1, 1, 1])
axes.set_xlim(-1, 1)
axes.set_ylim(-1, 1)
axes.plot(x_axis, y_axis)
axes.plot(-0.3, -0.5, 0.8, 0.8, marker='o', color='red')

Hope it helps.

For GVIM, hit v to go into visual mode; select text and hit Ctrl+Insert to copy selection into global clipboard.

From the menu you can see that the shortcut key is "+y i.e. hold Shift key, then press ", then + and then release Shift and press y (cumbersome in comparison to Shift+Insert).

As suggested above, this could possibly be an issue with your browser extensions. Disable all of your extensions including Adblock, and then try again as the code is loading fine in my browser right now (Google Chrome - latest) so it's probably an issue on your end. Also, have you tried a different browser like shudders IE if you have it? Adblock is known to conflict with domain names with track and market in them as a blanket rule. Try using private browsing mode or safe mode.

<!-- One simple solution to your problem could be like this: -->

<div>
<input type="text" id="fname" onmousemove="javascript: alert(this.id);" />
<!-- OR -->
<input type="text" id="fname" onclick="javascript: alert(this.id);" />
</div>
<!-- Both mousemove over the field & click on the field displays "fname"-->
<!-- Works fantastic in IE, FireFox, Chrome, Opera. -->
<!-- I didn't test it for Safari. -->

msnodesql is working out great for me. Here is a sample:

var mssql = require('msnodesql'), 
    express = require('express'),
    app = express(),
    nconf = require('nconf')

nconf.env()
     .file({ file: 'config.json' });

var conn = nconf.get("SQL_CONN");   
var conn_str = "Driver={SQL Server Native Client 11.0};Server=server.name.here;Database=Product;Trusted_Connection={Yes}";

app.get('/api/brands', function(req, res){
    var data = [];
    var jsonObject = {};    

    mssql.open(conn_str, function (err, conn) {
        if (err) {
            console.log("Error opening the connection!");
            return;
        }
        conn.queryRaw("dbo.storedproc", function (err, results) {
        if(err) {
                   console.log(err);
                   res.send(500, "Cannot retrieve records.");
                }
       else {
             //res.json(results);

             for (var i = 0; i < results.rows.length; i++) {
                 var jsonObject = new Object()
                 for (var j = 0; j < results.meta.length; j++) { 

                    paramName = results.meta[j].name;
                    paramValue = results.rows[i][j]; 
                    jsonObject[paramName] = paramValue;

                    }
                    data.push(jsonObject);  //This is a js object we are jsonizing not real json until res.send             
            } 

                res.send(data);

            }       
        });
    });
});

I've had my drivers installed and the Arduino connected through an unpowered usb hub. Moving it to an USB port of my computer made it work.

Not sure why you'd want to, but the C# way would be

string[] newArray = new string[0];

I'm guessing that VB won't be too dissimilar to this.

If you're building an empty array so you can populate it with values later, you really should consider using

List<string>

and converting it to an array (if you really need it as an array) with

newListOfString.ToArray();

You should use hasOwnProperty. For example:

myObj.hasOwnProperty('myKey');

Note: If you are using ESLint, the above may give you an error for violating the no-prototype-builtins rule, in that case the workaround is as below:

Object.prototype.hasOwnProperty.call(myObj, 'myKey');

There are two examples on Angular documents https://angular.io/guide/structural-directives#why-remove-rather-than-hide

A directive could hide the unwanted paragraph instead by setting its display style to none.

<p [style.display]="'block'">
  Expression sets display to "block".
  This paragraph is visible.
</p>

<p [style.display]="'none'">
  Expression sets display to "none".
  This paragraph is hidden but still in the DOM.
</p>

You can use [style.display]="'block'" to replace ngShow and [style.display]="'none'" to replace ngHide.

In the POSIX standard, which /bin/sh is supposed to respect, the command is . (a single dot), not source. The source command is a csh-ism that has been pulled into bash.

Try

. $env_name/bin/activate

Or if you must have non-POSIX bash-isms in your code, use #!/bin/bash.

It took me a while to implement the other responses, as I'm using Angular 8 (tested up to 10). I ended up with the following code (heavily inspired by Hasan).

Note that for the name to be set, the header Access-Control-Expose-Headers MUST include Content-Disposition. To set this in django RF:

http_response = HttpResponse(package, content_type='application/javascript')
http_response['Content-Disposition'] = 'attachment; filename="{}"'.format(filename)
http_response['Access-Control-Expose-Headers'] = "Content-Disposition"

In angular:

  // component.ts
  // getFileName not necessary, you can just set this as a string if you wish
  getFileName(response: HttpResponse<Blob>) {
    let filename: string;
    try {
      const contentDisposition: string = response.headers.get('content-disposition');
      const r = /(?:filename=")(.+)(?:")/
      filename = r.exec(contentDisposition)[1];
    }
    catch (e) {
      filename = 'myfile.txt'
    }
    return filename
  }

  
  downloadFile() {
    this._fileService.downloadFile(this.file.uuid)
      .subscribe(
        (response: HttpResponse<Blob>) => {
          let filename: string = this.getFileName(response)
          let binaryData = [];
          binaryData.push(response.body);
          let downloadLink = document.createElement('a');
          downloadLink.href = window.URL.createObjectURL(new Blob(binaryData, { type: 'blob' }));
          downloadLink.setAttribute('download', filename);
          document.body.appendChild(downloadLink);
          downloadLink.click();
        }
      )
  }

  // service.ts
  downloadFile(uuid: string) {
    return this._http.get<Blob>(`${environment.apiUrl}/api/v1/file/${uuid}/package/`, { observe: 'response', responseType: 'blob' as 'json' })
  }

I'm also about to ask the same question. But from what I've learned from codeacademy.com below code is enough to display the output or text?

print("hello world")  

If you want to append a value to myList, use myList.append(s).

Strings are immutable -- you can't append to them.

import datetime

begin = datetime.date(2008, 8, 15)
end = datetime.date(2008, 9, 15)

next_day = begin
while True:
    if next_day > end:
        break
    print next_day
    next_day += datetime.timedelta(days=1)

This one also works

1. Remove the "php.executablePath" line from the VS code settings.

2. Then add the xampp php path to the System variables

After that restart the Visual Studio Code

You don't mention what environment you're running in, which makes a big difference because there isn't a pure Python web browser that's capable of rendering HTML.

But if you're using a Mac, I've used webkit2png with great success. If not, as others have pointed out there are plenty of options.

As mentioned previously you really can't do this. You can do a modal dialog inside the window using a UI framework, or you can have a popup window, with a script that auto-closes after a timeout... each has a negative aspect. The modal window inside the browser won't create any notification if the window is minimized, and a programmatic (timer based) popup is likely to be blocked by modern browsers, and popup blockers.

There are basically 4 techniques for this task, all of them standard SQL.

NOT EXISTS

Often fastest in Postgres.

SELECT ip 
FROM   login_log l 
WHERE  NOT EXISTS (
   SELECT  -- SELECT list mostly irrelevant; can just be empty in Postgres
   FROM   ip_location
   WHERE  ip = l.ip
   );

Also consider:

• What is easier to read in EXISTS subqueries?

LEFT JOIN / IS NULL

Sometimes this is fastest. Often shortest. Often results in the same query plan as NOT EXISTS.

SELECT l.ip 
FROM   login_log l 
LEFT   JOIN ip_location i USING (ip)  -- short for: ON i.ip = l.ip
WHERE  i.ip IS NULL;

EXCEPT

Short. Not as easily integrated in more complex queries.

SELECT ip 
FROM   login_log

EXCEPT ALL  -- "ALL" keeps duplicates and makes it faster
SELECT ip
FROM   ip_location;

Note that (per documentation):

duplicates are eliminated unless EXCEPT ALL is used.

Typically, you'll want the ALL keyword. If you don't care, still use it because it makes the query faster.

NOT IN

Only good without NULL values or if you know to handle NULL properly. I would not use it for this purpose. Also, performance can deteriorate with bigger tables.

SELECT ip 
FROM   login_log
WHERE  ip NOT IN (
   SELECT DISTINCT ip  -- DISTINCT is optional
   FROM   ip_location
   );

NOT IN carries a "trap" for NULL values on either side:

• Find records where join doesn't exist

Similar question on dba.SE targeted at MySQL:

• Select rows where value of second column is not present in first column

It turns out that Google Android ships with Apache HttpClient 4.0, and I was able to figure out how to do it using the "Form based logon" example in the HttpClient docs:

https://github.com/apache/httpcomponents-client/blob/master/httpclient5/src/test/java/org/apache/hc/client5/http/examples/ClientFormLogin.java

import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.cookie.Cookie;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;

/**
 * A example that demonstrates how HttpClient APIs can be used to perform
 * form-based logon.
 */
public class ClientFormLogin {

    public static void main(String[] args) throws Exception {

        DefaultHttpClient httpclient = new DefaultHttpClient();

        HttpGet httpget = new HttpGet("https://portal.sun.com/portal/dt");

        HttpResponse response = httpclient.execute(httpget);
        HttpEntity entity = response.getEntity();

        System.out.println("Login form get: " + response.getStatusLine());
        if (entity != null) {
            entity.consumeContent();
        }
        System.out.println("Initial set of cookies:");
        List<Cookie> cookies = httpclient.getCookieStore().getCookies();
        if (cookies.isEmpty()) {
            System.out.println("None");
        } else {
            for (int i = 0; i < cookies.size(); i++) {
                System.out.println("- " + cookies.get(i).toString());
            }
        }

        HttpPost httpost = new HttpPost("https://portal.sun.com/amserver/UI/Login?" +
                "org=self_registered_users&" +
                "goto=/portal/dt&" +
                "gotoOnFail=/portal/dt?error=true");

        List <NameValuePair> nvps = new ArrayList <NameValuePair>();
        nvps.add(new BasicNameValuePair("IDToken1", "username"));
        nvps.add(new BasicNameValuePair("IDToken2", "password"));

        httpost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));

        response = httpclient.execute(httpost);
        entity = response.getEntity();

        System.out.println("Login form get: " + response.getStatusLine());
        if (entity != null) {
            entity.consumeContent();
        }

        System.out.println("Post logon cookies:");
        cookies = httpclient.getCookieStore().getCookies();
        if (cookies.isEmpty()) {
            System.out.println("None");
        } else {
            for (int i = 0; i < cookies.size(); i++) {
                System.out.println("- " + cookies.get(i).toString());
            }
        }

        // When HttpClient instance is no longer needed, 
        // shut down the connection manager to ensure
        // immediate deallocation of all system resources
        httpclient.getConnectionManager().shutdown();        
    }
}

string[] abcd = obj.show(); 

Response.Write(string.join("</br>", abcd));

There is a lot of confusion about these methods, but it is actually not that complicated. Most of the confusion is because:

1. If your View/ViewGroup or any of its children do not return true in onTouchEvent, dispatchTouchEvent and onInterceptTouchEvent will ONLY be called for MotionEvent.ACTION_DOWN. Without a true from onTouchEvent, the parent view will assume your view does not need the MotionEvents.
2. When none of the children of a ViewGroup return true in onTouchEvent, onInterceptTouchEvent will ONLY be called for MotionEvent.ACTION_DOWN, even if your ViewGroup returns true in onTouchEvent.

Processing order is like this:

1. dispatchTouchEvent is called.
2. onInterceptTouchEvent is called for MotionEvent.ACTION_DOWN or when any of the children of the ViewGroup returned true in onTouchEvent.
3. onTouchEvent is first called on the children of the ViewGroup and when none of the children returns true it is called on the View/ViewGroup.

If you want to preview TouchEvents/MotionEvents without disabling the events on your children, you must do two things:

1. Override dispatchTouchEvent to preview the event and return super.dispatchTouchEvent(ev);
2. Override onTouchEvent and return true, otherwise you won’t get any MotionEvent except MotionEvent.ACTION_DOWN.

If you want to detect some gesture like a swipe event, without disabling other events on your children as long as you did not detect the gesture, you can do it like this:

1. Preview the MotionEvents as described above and set a flag when you detected your gesture.
2. Return true in onInterceptTouchEvent when your flag is set to cancel MotionEvent processing by your children. This is also a convenient place to reset your flag, because onInterceptTouchEvent won’t be called again until the next MotionEvent.ACTION_DOWN.

Example of overrides in a FrameLayout (my example in is C# as I’m programming with Xamarin Android, but the logic is the same in Java):

public override bool DispatchTouchEvent(MotionEvent e)
{
    // Preview the touch event to detect a swipe:
    switch (e.ActionMasked)
    {
        case MotionEventActions.Down:
            _processingSwipe = false;
            _touchStartPosition = e.RawX;
            break;
        case MotionEventActions.Move:
            if (!_processingSwipe)
            {
                float move = e.RawX - _touchStartPosition;
                if (move >= _swipeSize)
                {
                    _processingSwipe = true;
                    _cancelChildren = true;
                    ProcessSwipe();
                }
            }
            break;
    }
    return base.DispatchTouchEvent(e);
}

public override bool OnTouchEvent(MotionEvent e)
{
    // To make sure to receive touch events, tell parent we are handling them:
    return true;
}

public override bool OnInterceptTouchEvent(MotionEvent e)
{
    // Cancel all children when processing a swipe:
    if (_cancelChildren)
    {
        // Reset cancel flag here, as OnInterceptTouchEvent won't be called until the next MotionEventActions.Down:
        _cancelChildren = false;
        return true;
    }
    return false;
}

CookieSyncManager.createInstance(this);    
CookieManager cookieManager = CookieManager.getInstance(); 
cookieManager.removeAllCookie();

It can clear google account in my webview

We can use this. Please change the src location of ur img from git folder and add alternate text if img is not loaded

 <p align="center"> 
    <img src="ur img url here" alt="alternate text">
 </p>

This might be redundant but the above most voted answer says .then(function (success) and that didn't work for me as of Angular version 1.5.8. Instead use response then inside the block response.data got me my json data I was looking for.

$http({
    method: 'get', 
    url: 'data/data.json'
}).then(function (response) {
    console.log(response, 'res');
    data = response.data;
},function (error){
    console.log(error, 'can not get data.');
});

In Bootstrap 4.1.3:

This worked for me when I was trying to center a bootstrap badge inside of a container > row > column next to a h1 title.

What did work was some simple css:

.my-valign-center {
  vertical-align: 50%;
}

or

<span class="badge badge-pill" style="vertical-align: 50%;">My Badge</span>

What helped me a lot was to run the Maven archetype:generate goal and select from one of the archetypes, some of which seem to be updated regularly (in particular JBoss seems to be well maintained).

mvn archetype:generate

Hundreds of archetypes appeared in a numbered list from which to select (519 as of now!). The goal, still running, prompted me to make a selection by entering a number or entering a search string e.g.:

513: remote -> org.xwiki.commons:xwiki-commons-component-archetype
514: remote -> org.xwiki.rendering:xwiki-rendering-archetype-macro
515: remote -> org.zkoss:zk-archetype-component
516: remote -> org.zkoss:zk-archetype-webapp
517: remote -> ru.circumflex:circumflex-archetype (-)
518: remote -> se.vgregion.javg.maven.archetypes:javg-minimal-archetype (-)
Choose a number or apply filter (format: [groupId:]artifactId, case sensitive contains):

I entered the search string "ear," which reduced the list to only 8 items (as of today):

Choose archetype:
1: remote -> org.codehaus.mojo.archetypes:ear-j2ee14 (-)
2: remote -> org.codehaus.mojo.archetypes:ear-javaee6 (-)
3: remote -> org.codehaus.mojo.archetypes:ear-jee5 (-)
4: remote -> org.hibernate:hibernate-search-quickstart (-)
5: remote -> org.jboss.spec.archetypes:jboss-javaee6-ear-webapp 
6: remote -> org.jboss.spec.archetypes:jboss-javaee6-webapp-ear-archetype
7: remote -> org.jboss.spec.archetypes:jboss-javaee6-webapp-ear-archetype-blank
8: remote -> org.ow2.weblab.tools.maven:weblab-archetype-searcher

I selected "org.jboss.spec.archetypes:jboss-javaee6-ear-webapp" (by entering the selection "5" in this example).

Next, the goal asked me to enter the groupId, artifactId, package names, etc., and it then generated the following well-documented example application:

[pgarner@localhost Foo]$ tree
.
|-- Foo-ear
|   `-- pom.xml
|-- Foo-ejb
|   |-- pom.xml
|   `-- src
|       |-- main
|       |   |-- java
|       |   |   `-- com
|       |   |       `-- foo
|       |   |           |-- controller
|       |   |           |   `-- MemberRegistration.java
|       |   |           |-- data
|       |   |           |   `-- MemberListProducer.java
|       |   |           |-- model
|       |   |           |   `-- Member.java
|       |   |           `-- util
|       |   |               `-- Resources.java
|       |   `-- resources
|       |       |-- import.sql
|       |       `-- META-INF
|       |           |-- beans.xml
|       |           `-- persistence.xml
|       `-- test
|           |-- java
|           |   `-- com
|           |       `-- foo
|           |           `-- test
|           |               `-- MemberRegistrationTest.java
|           `-- resources
|-- Foo-web
|   |-- pom.xml
|   `-- src
|       `-- main
|           |-- java
|           |   `-- com
|           |       `-- foo
|           |           `-- rest
|           |               |-- JaxRsActivator.java
|           |               `-- MemberResourceRESTService.java
|           `-- webapp
|               |-- index.html
|               |-- index.xhtml
|               |-- resources
|               |   |-- css
|               |   |   `-- screen.css
|               |   `-- gfx
|               |       |-- banner.png
|               |       `-- logo.png
|               `-- WEB-INF
|                   |-- beans.xml
|                   |-- faces-config.xml
|                   `-- templates
|                       `-- default.xhtml
|-- pom.xml
`-- README.md

32 directories, 23 files

After reading the four POM files, which were well-commented, I had pretty much all the information I needed.

./pom.xml
./Foo-ear/pom.xml
./Foo-ejb/pom.xml
./Foo-web/pom.xml

This is an old thread, but I stumbled across it when trying to solve a similar problem.

For me, I got this particular error relating to the php_wincache.dll. I was in the process of updating PHP from 5.5.38 to 5.6.31 on a Windows server. For some reason, not all of the DLL files updated with the newest versions. Most did, but some didn't.

So, if you get an error similar to this, make sure all the extensions are in place and updated.

Just adding more details on where to setup. Main reason would be the JAVA_HOME setup in the environment variable should be pointing to correct JDK location.

1. Check System -> Advance System Settings
2. Click on Environment variable
3. Add variable JAVA_HOME -> "C:\Program Files\Java\jdk1.8.0_141;"
4. Edit "path" -> append %JAVA_HOME%; to the existing text.

A Promise represents a proxy for a value not necessarily known when the promise is created. It allows you to associate handlers to an asynchronous action's eventual success value or failure reason. This lets asynchronous methods return values like synchronous methods: instead of the final value, the asynchronous method returns a promise of having a value at some point in the future.

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise

The deferred.promise() method allows an asynchronous function to prevent other code from interfering with the progress or status of its internal request. The Promise exposes only the Deferred methods needed to attach additional handlers or determine the state (then, done, fail, always, pipe, progress, state and promise), but not ones that change the state (resolve, reject, notify, resolveWith, rejectWith, and notifyWith).

If target is provided, deferred.promise() will attach the methods onto it and then return this object rather than create a new one. This can be useful to attach the Promise behavior to an object that already exists.

If you are creating a Deferred, keep a reference to the Deferred so that it can be resolved or rejected at some point. Return only the Promise object via deferred.promise() so other code can register callbacks or inspect the current state.

Simply we can say that a Promise represents a value that is not yet known where as a Deferred represents work that is not yet finished.

<select ng-model="output">
   <option ng-repeat="(key,val) in dictionary" value="{{key}}">{{val}}</option>
</select>

This should work:

window.location.hostname

First off, custom events don't play well with React components natively. So you cant just say <div onMyCustomEvent={something}> in the render function, and have to think around the problem.

Secondly, after taking a peek at the documentation for the library you're using, the event is actually fired on document.body, so even if it did work, your event handler would never trigger.

Instead, inside componentDidMount somewhere in your application, you can listen to nv-enter by adding

document.body.addEventListener('nv-enter', function (event) {
    // logic
});

Then, inside the callback function, hit a function that changes the state of the component, or whatever you want to do.

You can do it like this:

var list = document.getElementById("foo").getElementsByClassName("bar");
if (list && list.length > 0) {
    list[0].innerHTML = "Goodbye world!";
}

or, if you want to do it with with less error checking and more brevity, it can be done in one line like this:

document.getElementById("foo").getElementsByClassName("bar")[0].innerHTML = "Goodbye world!";

In explanation:

1. You get the element with id="foo".
2. You then find the objects that are contained within that object that have class="bar".
3. That returns an array-like nodeList, so you reference the first item in that nodeList
4. You can then set the innerHTML of that item to change its contents.

Caveats: some older browsers don't support getElementsByClassName (e.g. older versions of IE). That function can be shimmed into place if missing.

This is where I recommend using a library that has built-in CSS3 selector support rather than worrying about browser compatibility yourself (let someone else do all the work). If you want just a library to do that, then Sizzle will work great. In Sizzle, this would be be done like this:

Sizzle("#foo .bar")[0].innerHTML = "Goodbye world!";

jQuery has the Sizzle library built-in and in jQuery, this would be:

$("#foo .bar").html("Goodbye world!");

Another way of solving this is to use the DictReader class, which "skips" the header row and uses it to allowed named indexing.

Given "foo.csv" as follows:

FirstColumn,SecondColumn
asdf,1234
qwer,5678

Use DictReader like this:

import csv
with open('foo.csv') as f:
    reader = csv.DictReader(f, delimiter=',')
    for row in reader:
        print(row['FirstColumn'])  # Access by column header instead of column number
        print(row['SecondColumn'])

Tells the iterator that it's reached the end.

As an example:

public interface INode
{
    IEnumerable<Node> GetChildren();
}

public class NodeWithTenChildren : INode
{
    private Node[] m_children = new Node[10];

    public IEnumerable<Node> GetChildren()
    {
        for( int n = 0; n < 10; ++n )
        {
            yield return m_children[ n ];
        }
    }
}

public class NodeWithNoChildren : INode
{
    public IEnumerable<Node> GetChildren()
    {
        yield break;
    }
}

I had to make my VideoView sit in a RelativeLayout in order to make the chosen answer work.

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

    <VideoView android:id="@+id/videoViewRelative"
         android:layout_alignParentTop="true"
         android:layout_alignParentBottom="true"
         android:layout_alignParentLeft="true"
         android:layout_alignParentRight="true"
         android:layout_width="fill_parent"
         android:layout_height="fill_parent">
    </VideoView>

</RelativeLayout>

As given here: Android - How to stretch video to fill VideoView area Toggling between screen sizes would be as simple as changing the layout parameters as given in the chosen answer.

str_replace will do the trick thusly

$new_str = str_replace(' ', '', $old_str);

You can use a built-in for this, strsplit:

> s = "TGAS_1121"
> s1 = unlist(strsplit(s, split='_', fixed=TRUE))[2]
> s1    
 [1] "1121"

strsplit returns both pieces of the string parsed on the split parameter as a list. That's probably not what you want, so wrap the call in unlist, then index that array so that only the second of the two elements in the vector are returned.

Finally, the fixed parameter should be set to TRUE to indicate that the split parameter is not a regular expression, but a literal matching character.

cd to directory, then:

du -sh

ftw!

Originally wrote about it here: https://ao.gl/get-the-total-size-of-all-the-files-in-a-directory/

This also includes the last date

$begin = new DateTime( "2015-07-03" );
$end   = new DateTime( "2015-07-09" );

for($i = $begin; $i <= $end; $i->modify('+1 day')){
    echo $i->format("Y-m-d");
}

If you dont need the last date just remove = from the condition.

A quick and dirty one:

var obj = {},
  arr = ['a','b','c'],
  l = arr.length; 

while( l && (obj[--l] = arr.pop() ) ){};

The answer here is very simple:

You're already containing it in double quotes, so there's no need to escape it with \.

If you want to escape single quotes in a single quote string:

var string = 'this isn\'t a double quoted string';
var string = "this isn\"t a single quoted string";
//           ^         ^ same types, hence we need to escape it with a backslash

or if you want to escape \', you can escape the bashslash to \\ and the quote to \' like so:

var string = 'this isn\\\'t a double quoted string';
//                    vvvv
//                     \ ' (the escaped characters)

However, if you contain the string with a different quote type, you don't need to escape:

var string = 'this isn"t a double quoted string';
var string = "this isn't a single quoted string";
//           ^        ^ different types, hence we don't need escaping

As reported in https://github.com/angular/angular.js/issues/4765, switching from ng-click to ng-change seems to fix this (I am using Angular 1.2.14)

open a terminal and run this command xhost +. This commands needs to be run every time you restart your machine. If everything works fine may be you can add this to startup commands

Also make sure in your /etc/environment file there is a line

export DISPLAY=:0.0 

And then, run your tests to see if your issue is resolved.

All please note the comment from sardathrion below before using this.

check for keyCode && which & keyup || keydown

$(document).keydown(function(e){
   var code = e.keyCode || e.which;
   alert(code);
});

returning an array of pointers pointing to starting elements of all rows is the only decent way of returning 2d array.

This is another solution using clickable articles (can of course be changed to anything).

http://jsfiddle.net/SqJ53/2/

Edit: If you want to use CSS animation, you must use MAX-HEIGHT instead of HEIGHT

Javascript

$(".container article").click(function() {
        $(this).toggleClass("expand");
})

CSS

.container {
    position: relative;
    width: 900px;
    height: auto;
}
.container article {
    position: relative;
    border: 1px solid #999;
    height: auto;
    max-height: 105px;
    overflow: hidden;
    -webkit-transition: all .5s ease-in-out;
    -moz-transition: all .5s ease-in-out;
    transition: all .5s ease-in-out; 
}
.container article:hover {
    background: #dadada;
}
.container article.expand {
    max-height: 900px;
}

HTML

<div class="container">
    <article class="posts-by-cat_article-222">
        <h3><a href="http://google.se">Section 1</a></h3>
        <p>This is my super long content, just check me out.</p>
        <p>This is my super long content, just check me out.</p>
        <p>This is my super long content, just check me out.</p>
        <p>This is my super long content, just check me out.</p>
    </article>

    <article class="posts-by-cat_article-222">
        <h3><a href="http://google.se">Section 2</a></h3>
        <p>This is my super long content, just check me out.</p>
        <p>This is my super long content, just check me out.</p>
        <p>This is my super long content, just check me out.</p>
        <p>This is my super long content, just check me out.</p>

    </article>
</div>

If you want to permit an array of hashes(or an array of objects from the perspective of JSON)

params.permit(:foo, array: [:key1, :key2])

2 points to notice here:

1. array should be the last argument of the permit method.
2. you should specify keys of the hash in the array, otherwise you will get an error Unpermitted parameter: array, which is very difficult to debug in this case.

maven-compiler-plugin it's already present in plugins hierarchy dependency in pom.xml. Check in Effective POM.

For short you can use properties like this:

<properties>
   <maven.compiler.source>1.8</maven.compiler.source>
   <maven.compiler.target>1.8</maven.compiler.target>
</properties>

I'm using Maven 3.2.5.

Try initializing with null value.

private java.util.Date date2 = null;

Also private java.util.Date date2 = ""; will not work as "" is a string.

The keypress event isn't triggered by all browsers when you click shift or ctrl, but fortunately the keydown event is.

If you switch out the keypress with keydown you might have better luck.

You can make auto increment in SQL Modeler. In column properties window Click : General then Tick the box of Auto Increment. After that the auto increment window will be enabled for you.

To add a header just add the following code to the location block where you want to add the header:

location some-location {
  add_header X-my-header my-header-content;      
}

Obviously, replace the x-my-header and my-header-content with what you want to add. And that's all there is to it.

Update 03-Oct-19

new script that displays 10second countdown then launches chrome/chromiumn in fullscreen kiosk mode.

more updates to chrome required script update to allow autoplaying video with audio. Note --overscroll-history-navigation=0 isn't working currently will need to disable this flag by going to chrome://flags/#overscroll-history-navigation in your browser and setting to disabled.

@echo off
echo Countdown to application launch...
timeout /t 10
"C:\Program Files (x86)\chrome-win32\chrome.exe" --chrome --kiosk http://localhost/xxxx --incognito --disable-pinch --no-user-gesture-required --overscroll-history-navigation=0
exit

might need to set chrome://flags/#autoplay-policy if running an older version of chrome (60 below)

Update 11-May-16

There have been many updates to chrome since I posted this and have had to alter the script alot to keep it working as I needed.

Couple of issues with newer versions of chrome:

• built in pinch to zoom
• Chrome restore error always showing after forced shutdown
• auto update popup

Because of the restore error switched out to incognito mode as this launches a clear version all the time and does not save what the user was viewing and so if it crashes there is nothing to restore. Also the auto up in newer versions of chrome being a pain to try and disable I switched out to use chromium as it does not auto update and still gives all the modern features of chrome. Note make sure you download the top version of chromium this comes with all audio and video codecs as the basic version of chromium does not support all codecs.

Chromium download link

@echo off

echo Step 1 of 2: Waiting a few seconds before starting the Kiosk...

"C:\windows\system32\ping" -n 5 -w 1000 127.0.0.1 >NUL

echo Step 2 of 5: Waiting a few more seconds before starting the browser...

"C:\windows\system32\ping" -n 5 -w 1000 127.0.0.1 >NUL

echo Final 'invisible' step: Starting the browser, Finally...

"C:\Program Files (x86)\Google\Chromium\chrome.exe" --chrome --kiosk http://127.0.0.1/xxxx --incognito --disable-pinch --overscroll-history-navigation=0

exit

Outdated

I use this for exhibitions to lock down screens. I think its what your looking for.

• Start chrome and go to www.google.com drag and drop the url out onto the desktop
• rename it to something handy for this example google_homepage
• drop this now into your c directory, click on my computer c: and drop this file in there
• start chrome again go to settings and under on start up select open a specific page and set your home page here.

Next part is the script that I use to start close and restart chrome again in kiosk mode. The locations is where I have chrome installed so it might be abit different for you depending on your install.

Open your text editor of choice or just notepad and past the below code in, make sure its in the same format/order as below. Save it to your desktop as what ever you like so for this example chrome_startup_script.txt next right click it and rename, remove the txt from the end and put in bat instead. double click this to launch the script to see if its working correctly.

A command line box should appear and run through the script, chrome will start and then close down the reason to do this is to remove any error reports such as if the pc crashed, when chrome starts again without this it would show the yellow error bar at the top saying chrome did not shut down properly would you like to restore it. After a few seconds chrome should start again and in kiosk mode and will point to what ever homepage you have set.

@echo off
echo Step 1 of 5: Waiting a few seconds before starting the Kiosk...
"C:\windows\system32\ping" -n 31 -w 1000 127.0.0.1 >NUL
echo Step 2 of 5: Starting browser as a pre-start to delete error messages...
"C:\google_homepage.url"
echo Step 3 of 5: Waiting a few seconds before killing the browser task...
"C:\windows\system32\ping" -n 11 -w 1000 127.0.0.1 >NUL
echo Step 4 of 5: Killing the browser task gracefully to avoid session restore...
Taskkill /IM chrome.exe
echo Step 5 of 5: Waiting a few seconds before restarting the browser...
"C:\windows\system32\ping" -n 11 -w 1000 127.0.0.1 >NUL
echo Final 'invisible' step: Starting the browser, Finally...
"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" --kiosk --overscroll-history-navigation=0"
exit

Note: The number after the -n of the ping is the amount of seconds (minus one second) to wait before starting the link (or application in the next line)

Finally if this is all working then you can drag and drop the .bat file into the startup folder in windows and this script will launch each time windows starts.

Update:

With recent versions of chrome they have really got into enabling touch gestures, this means that swiping left or right on a touchscreen will cause the browser to go forward or backward in history. To prevent this we need to disable the history navigation on the back and forward buttons to do that add the following --overscroll-history-navigation=0 to the end of the script.

Make sure to double the entry with an additional "www"-prefix. If you don't addresses like "www.acme.com" will not work!

in PHP-Fusion Open Source CMS, http://www.php-fusion.co.uk, we do it this way at core -

    <?php
        ob_start();
        // Your PHP codes here            
        ?>
        YOUR HTML HERE


        <?php 
        $html_output = ob_get_contents();
        ob_end_clean();
        echo $html_output;
    ?>

You won't be able to see anything loading one by one. The only loader will be your browser tab spinner, and it just displays everything in an instant after everything is loaded. Give it a try.

This method is fully compliant in html files.

.m2 directory on linux box usually would be $HOME/.m2

you could get the $HOME :

echo $HOME

or simply:

cd <enter>

to go to your home directory.

other information from maven site: http://maven.apache.org/download.html#Installation

Use money-rails gem. It nicely handles money and currencies in your model and also has a bunch of helpers to format your prices.

PhiLho has mentioned AutoRuns in passing, but I think it deserves elaboration.

It doesn't scan the whole registry, just the parts containing references to things which get loaded automatically (EXEs, DLLs, drivers etc.) which is probably what you are interested in. It doesn't track changes but can export to a text file, so you can run it before and after installation and do a diff.

Solution that handles colspan

I have a solution based on matching the left edge of the td to the left edge of the corresponding th. It should handle arbitrarily complex colspans.

I modified the test case to show that arbitrary colspan is handled correctly.

Live Demo

JS

$(function($) {
  "use strict";

  // Only part of the demo, the thFromTd call does the work
  $(document).on('mouseover mouseout', 'td', function(event) {
    var td = $(event.target).closest('td'),
        th = thFromTd(td);
    th.parent().find('.highlight').removeClass('highlight');
    if (event.type === 'mouseover')
      th.addClass('highlight');
  });

  // Returns jquery object
  function thFromTd(td) {
    var ofs = td.offset().left,
        table = td.closest('table'),
        thead = table.children('thead').eq(0),
        positions = cacheThPositions(thead),
        matches = positions.filter(function(eldata) {
          return eldata.left <= ofs;
        }),
        match = matches[matches.length-1],
        matchEl = $(match.el);
    return matchEl;
  }

  // Caches the positions of the headers,
  // so we don't do a lot of expensive `.offset()` calls.
  function cacheThPositions(thead) {
    var data = thead.data('cached-pos'),
        allth;
    if (data)
      return data;
    allth = thead.children('tr').children('th');
    data = allth.map(function() {
      var th = $(this);
      return {
        el: this,
        left: th.offset().left
      };
    }).toArray();
    thead.data('cached-pos', data);
    return data;
  }
});

CSS

.highlight {
  background-color: #EEE;
}

HTML

<table>
    <thead> 
        <tr>
            <th colspan="3">Not header!</th>
            <th id="name" colspan="3">Name</th>
            <th id="address">Address</th>
            <th id="address">Other</th>
        </tr>
    </thead> 
    <tbody>
        <tr>
            <td colspan="2">X</td>
            <td>1</td>
            <td>Bob</td>
            <td>J</td>
            <td>Public</td>
            <td>1 High Street</td>
            <td colspan="2">Postfix</td>
        </tr>
    </tbody>
</table>

The idea of retrying the query in case of Deadlock exception is good, but it can be terribly slow, since mysql query will keep waiting for locks to be released. And incase of deadlock mysql is trying to find if there is any deadlock, and even after finding out that there is a deadlock, it waits a while before kicking out a thread in order to get out from deadlock situation.

What I did when I faced this situation is to implement locking in your own code, since it is the locking mechanism of mysql is failing due to a bug. So I implemented my own row level locking in my java code:

private HashMap<String, Object> rowIdToRowLockMap = new HashMap<String, Object>();
private final Object hashmapLock = new Object();
public void handleShortCode(Integer rowId)
{
    Object lock = null;
    synchronized(hashmapLock)
    {
      lock = rowIdToRowLockMap.get(rowId);
      if (lock == null)
      {
          rowIdToRowLockMap.put(rowId, lock = new Object());
      }
    }
    synchronized (lock)
    {
        // Execute your queries on row by row id
    }
}

To test if two dicts are equal in keys and values:

def dicts_equal(d1,d2):
    """ return True if all keys and values are the same """
    return all(k in d2 and d1[k] == d2[k]
               for k in d1) \
        and all(k in d1 and d1[k] == d2[k]
               for k in d2)

If you want to return the values which differ, write it differently:

def dict1_minus_d2(d1, d2):
    """ return the subset of d1 where the keys don't exist in d2 or
        the values in d2 are different, as a dict """
    return {k,v for k,v in d1.items() if k in d2 and v == d2[k]}

You would have to call it twice i.e

dict1_minus_d2(d1,d2).extend(dict1_minus_d2(d2,d1))

Here's the most elegant, pure-Java (no library) solution I came up with after some experimentation:

public static String fromStream(InputStream in) throws IOException
{
    BufferedReader reader = new BufferedReader(new InputStreamReader(in));
    StringBuilder out = new StringBuilder();
    String newLine = System.getProperty("line.separator");
    String line;
    while ((line = reader.readLine()) != null) {
        out.append(line);
        out.append(newLine);
    }
    return out.toString();
}

You can use either length property and length is better on performance than size.

$('#input1 option').length;

OR you can use size function like (removed in jQuery v3)

$('#input1 option').size(); 

$(document).ready(function(){
   console.log($('#input1 option').size());
   console.log($('#input1 option').length);
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<select data-attr="dropdown" id="input1">
   <option value="Male" id="Male">Male</option>
   <option value="Female" id="Female">Female</option>
</select>

As mentioned on the documentation page the alternative is ProgressBar. ProgressDialog's look can be replicated by placing a ProgressBar into an AlertDialog.

You can still use it, but Android does not want you to use it, that is why it is deprecated. So you should consider solving your problem in another way, like embedding a ProgressBar into your Layout.

One con I can think of is if you need really fast access to your data in your view (for example, game animation data like bone positions.) It is very inefficient to keep a layer of separation in this case.

Otherwise, for most other applications which are more data driven than graphics driven, it seems like a logical way to drive a UI.

Even though it's an old question, I still had some hard time with fetching dynamic variables names, while avoiding the eval (evil) command.

Solved it with declare -n which creates a reference to a dynamic value, this is especially useful in CI/CD processes, where the required secret names of the CI/CD service are not known until runtime. Here's how:

# Bash v4.3+
# -----------------------------------------------------------
# Secerts in CI/CD service, injected as environment variables
# AWS_ACCESS_KEY_ID_DEV, AWS_SECRET_ACCESS_KEY_DEV
# AWS_ACCESS_KEY_ID_STG, AWS_SECRET_ACCESS_KEY_STG
# -----------------------------------------------------------
# Environment variables injected by CI/CD service
# BRANCH_NAME="DEV"
# -----------------------------------------------------------
declare -n _AWS_ACCESS_KEY_ID_REF=AWS_ACCESS_KEY_ID_${BRANCH_NAME}
declare -n _AWS_SECRET_ACCESS_KEY_REF=AWS_SECRET_ACCESS_KEY_${BRANCH_NAME}

export AWS_ACCESS_KEY_ID=${_AWS_ACCESS_KEY_ID_REF}
export AWS_SECRET_ACCESS_KEY=${_AWS_SECRET_ACCESS_KEY_REF}

echo $AWS_ACCESS_KEY_ID $AWS_SECRET_ACCESS_KEY
aws s3 ls

If you are like me and need to change color of text itself also while in the same time filling the background color check my solution.

Steps to create:

1. Have two text, one is static colored in color on hover, and the other one in default state color which you will be moving on hover
2. On hover move wrapper of the not static one text while in the same time move inner text of that wrapper to the opposite direction.
3. Make sure to add overflow hidden where needed

Good thing about this solution:

• Support IE9, uses only transform
• Button (or element you are applying animation) is fluid in width, so no fixed values are being used here

Not so good thing about this solution:

• A really messy markup, could be solved by using pseudo elements and att(data)?
• There is some small glitch in animation when having more then one button next to each other, maybe it could be easily solved but I didn't take much time to investigate yet.

Check the pen ---> https://codepen.io/nikolamitic/pen/vpNoNq

<button class="btn btn--animation-from-right">
  <span class="btn__text-static">Cover left</span>
  <div class="btn__text-dynamic">
    <span class="btn__text-dynamic-inner">Cover left</span>
  </div>
</button>

.btn {
  padding: 10px 20px;
  position: relative;

  border: 2px solid #222;
  color: #fff;
  background-color: #222;
  position: relative;

  overflow: hidden;
  cursor: pointer;

  text-transform: uppercase;
  font-family: monospace;
  letter-spacing: -1px;

  [class^="btn__text"] {
    font-size: 24px;
  }

  .btn__text-dynamic,
  .btn__text-dynamic-inner {    
    display: flex;
    justify-content: center;
    align-items: center;

    position: absolute;
    top:0;
    left:0;
    right:0;
    bottom:0;
    z-index: 2;

    transition: all ease 0.5s;
  }

  .btn__text-dynamic {
    background-color: #fff;
    color: #222;

    overflow: hidden;
  }

  &:hover {
    .btn__text-dynamic {
      transform: translateX(-100%);
    }
    .btn__text-dynamic-inner {
      transform: translateX(100%);
    }
  }
}

.btn--animation-from-right {
    &:hover {
    .btn__text-dynamic {
      transform: translateX(100%);
    }
    .btn__text-dynamic-inner {
      transform: translateX(-100%);
    }
  }
}

You can remove .btn--animation-from-right modifier if you want to animate to the left.

You can use the COALESCE function to automatically return null values as 0. Syntax is as shown below:

SELECT COALESCE(total_amount, 0) from #Temp1

Export all databases in Ubuntu

1 - mysqldump -u root -p --databases database1 database2 > ~/Desktop/databases_1_2.sql

OR

2 - mysqldump -u root -p --all_databases > ~/Desktop/all_databases.sql

Adding to the other great answers, we can use the Python logging library's debug(), info(), warning(), error(), and critical() methods. Quoting from the docs for Python 3.7.4,

There are three keyword arguments in kwargs which are inspected: exc_info which, if it does not evaluate as false, causes exception information to be added to the logging message.

What this means is, you can use the Python logging library to output a debug(), or other type of message, and the logging library will include the stack trace in its output. With this in mind, we can do the following:

import logging

logger = logging.getLogger()
logger.setLevel(logging.DEBUG)

def f():
    a = { 'foo': None }
    # the following line will raise KeyError
    b = a['bar']

def g():
    f()

try:
    g()
except Exception as e:
    logger.error(str(e), exc_info=True)

And it will output:

'bar'
Traceback (most recent call last):
  File "<ipython-input-2-8ae09e08766b>", line 18, in <module>
    g()
  File "<ipython-input-2-8ae09e08766b>", line 14, in g
    f()
  File "<ipython-input-2-8ae09e08766b>", line 10, in f
    b = a['bar']
KeyError: 'bar'

For .NET DLLs you can use ildasm

python -m timeit -h

In the following link you can find useful info about recording with AVAudioRecording. In this link in the first part "USing Audio" there is an anchor named “Recording with the AVAudioRecorder Class.” that leads you to the example.

AudioVideo Conceptual MultimediaPG

You can actually chain multiple $lookup stages. Based on the names of the collections shared by profesor79, you can do this :

db.sivaUserInfo.aggregate([
    {
        $lookup: {
           from: "sivaUserRole",
           localField: "userId",
           foreignField: "userId",
           as: "userRole"
        }
    },
    {
        $unwind: "$userRole"
    },
    {
        $lookup: {
            from: "sivaUserInfo",
            localField: "userId",
            foreignField: "userId",
            as: "userInfo"
        }
    },
    {
        $unwind: "$userInfo"
    }
])

This will return the following structure :

{
    "_id" : ObjectId("56d82612b63f1c31cf906003"),
    "userId" : "AD",
    "phone" : "0000000000",
    "userRole" : {
        "_id" : ObjectId("56d82612b63f1c31cf906003"),
        "userId" : "AD",
        "role" : "admin"
    },
    "userInfo" : {
        "_id" : ObjectId("56d82612b63f1c31cf906003"),
        "userId" : "AD",
        "phone" : "0000000000"
    }
}

Maybe this could be considered an anti-pattern because MongoDB wasn't meant to be relational but it is useful.

I'm not sure but:

• If you call the delete method with a non transient object, this means first fetched the object from the DB. So it is normal to see a select statement. Perhaps in the end you see 2 select + 1 delete?

• If you call the delete method with a transient object, then it is possible that you have a cascade="delete" or something similar which requires to retrieve first the object so that "nested actions" can be performed if it is required.

Edit: Calling delete() with a transient instance means doing something like that:

MyEntity entity = new MyEntity();
entity.setId(1234);
session.delete(entity);

This will delete the row with id 1234, even if the object is a simple pojo not retrieved by Hibernate, not present in its session cache, not managed at all by Hibernate.

If you have an entity association Hibernate probably have to fetch the full entity so that it knows if the delete should be cascaded to associated entities.

Using the "point" leads to the creation of a folder named "point" (on Ubuntu 16).

tar -tf site1.bz2 -C /var/www/site1/ .

I dealt with this in more detail and prepared an example. Multi-line recording, plus an exception.

tar -tf site1.bz2\
    -C /var/www/site1/ style.css\
    -C /var/www/site1/ index.html\
    -C /var/www/site1/ page2.html\
    -C /var/www/site1/ page3.html\
    --exclude=images/*.zip\
    -C /var/www/site1/ images/
    -C /var/www/site1/ subdir/
/

use style instead like

<div style="display:none;"></div>

The binary in 'convert to binary' can refer to three main things. The positional number system, the binary representation in memory or 32bit bitstrings. (for 64bit bitstrings see Patrick Roberts' answer)

1. Number System

(123456).toString(2) will convert numbers to the base 2 positional numeral system. In this system negative numbers are written with minus signs just like in decimal.

2. Internal Representation

The internal representation of numbers is 64 bit floating point and some limitations are discussed in this answer. There is no easy way to create a bit-string representation of this in javascript nor access specific bits.

3. Masks & Bitwise Operators

MDN has a good overview of how bitwise operators work. Importantly:

Bitwise operators treat their operands as a sequence of 32 bits (zeros and ones)

Before operations are applied the 64 bit floating points numbers are cast to 32 bit signed integers. After they are converted back.

Here is the MDN example code for converting numbers into 32-bit strings.

function createBinaryString (nMask) {
  // nMask must be between -2147483648 and 2147483647
  for (var nFlag = 0, nShifted = nMask, sMask = ""; nFlag < 32;
       nFlag++, sMask += String(nShifted >>> 31), nShifted <<= 1);
  return sMask;
}

createBinaryString(0) //-> "00000000000000000000000000000000"
createBinaryString(123) //-> "00000000000000000000000001111011"
createBinaryString(-1) //-> "11111111111111111111111111111111"
createBinaryString(-1123456) //-> "11111111111011101101101110000000"
createBinaryString(0x7fffffff) //-> "01111111111111111111111111111111"

This formula will do the job:

=INDEX(G:G,MATCH(FALSE,ISERROR(SEARCH(H1,G:G)),0)+3)

you need to enter it as an array formula, i.e. press Ctrl-Shift-Enter. It assumes that the substring you're searching for is in cell H1.

You could specify the online Javadoc location for a particular JAR in Eclipse. This saved my day when I wasn't able to find any downloadable Javadocs for Kafka.

1. In the Package Explorer, right click on the intended JAR (under the project's Referenced Libraries or Maven Dependences or anything as such) and click on Properties.
2. Click on Javadoc Location.
3. In the Javadoc location path field under Javadoc URL, enter the URL of the online Javadocs, which most likely ends with /<version>/javadoc/. For example, Kafka 2.3.0's Javadocs are located at http://www.apache.org/dist/kafka/2.3.0/javadoc/ (you might want to change https to http in your URL, as it raised an invalid location warning after clicking on Validate... for me).

There is no existing Swap-method, so you have to create one yourself. Of course you can linqify it, but that has to be done with one (unwritten?) rules in mind: LINQ-operations do not change the input parameters!

In the other "linqify" answers, the (input) list is modified and returned, but this action brakes that rule. If would be weird if you have a list with unsorted items, do a LINQ "OrderBy"-operation and than discover that the input list is also sorted (just like the result). This is not allowed to happen!

So... how do we do this?

My first thought was just to restore the collection after it was finished iterating. But this is a dirty solution, so do not use it:

static public IEnumerable<T> Swap1<T>(this IList<T> source, int index1, int index2)
{
    // Parameter checking is skipped in this example.

    // Swap the items.
    T temp = source[index1];
    source[index1] = source[index2];
    source[index2] = temp;

    // Return the items in the new order.
    foreach (T item in source)
        yield return item;

    // Restore the collection.
    source[index2] = source[index1];
    source[index1] = temp;
}

This solution is dirty because it does modify the input list, even if it restores it to the original state. This could cause several problems:

1. The list could be readonly which will throw an exception.
2. If the list is shared by multiple threads, the list will change for the other threads during the duration of this function.
3. If an exception occurs during the iteration, the list will not be restored. (This could be resolved to write an try-finally inside the Swap-function, and put the restore-code inside the finally-block).

There is a better (and shorter) solution: just make a copy of the original list. (This also makes it possible to use an IEnumerable as a parameter, instead of an IList):

static public IEnumerable<T> Swap2<T>(this IList<T> source, int index1, int index2)
{
    // Parameter checking is skipped in this example.

    // If nothing needs to be swapped, just return the original collection.
    if (index1 == index2)
        return source;

    // Make a copy.
    List<T> copy = source.ToList();

    // Swap the items.
    T temp = copy[index1];
    copy[index1] = copy[index2];
    copy[index2] = temp;

    // Return the copy with the swapped items.
    return copy;
}

One disadvantage of this solution is that it copies the entire list which will consume memory and that makes the solution rather slow.

You might consider the following solution:

static public IEnumerable<T> Swap3<T>(this IList<T> source, int index1, int index2)
{
    // Parameter checking is skipped in this example.
    // It is assumed that index1 < index2. Otherwise a check should be build in and both indexes should be swapped.

    using (IEnumerator<T> e = source.GetEnumerator())
    {
        // Iterate to the first index.
        for (int i = 0; i < index1; i++)
            yield return source[i];

        // Return the item at the second index.
        yield return source[index2];

        if (index1 != index2)
        {
            // Return the items between the first and second index.
            for (int i = index1 + 1; i < index2; i++)
                yield return source[i];

            // Return the item at the first index.
            yield return source[index1];
        }

        // Return the remaining items.
        for (int i = index2 + 1; i < source.Count; i++)
            yield return source[i];
    }
}

And if you want to input parameter to be IEnumerable:

static public IEnumerable<T> Swap4<T>(this IEnumerable<T> source, int index1, int index2)
{
    // Parameter checking is skipped in this example.
    // It is assumed that index1 < index2. Otherwise a check should be build in and both indexes should be swapped.

    using(IEnumerator<T> e = source.GetEnumerator())
    {
        // Iterate to the first index.
        for(int i = 0; i < index1; i++) 
        {
            if (!e.MoveNext())
                yield break;
            yield return e.Current;
        }

        if (index1 != index2)
        {
            // Remember the item at the first position.
            if (!e.MoveNext())
                yield break;
            T rememberedItem = e.Current;

            // Store the items between the first and second index in a temporary list. 
            List<T> subset = new List<T>(index2 - index1 - 1);
            for (int i = index1 + 1; i < index2; i++)
            {
                if (!e.MoveNext())
                    break;
                subset.Add(e.Current);
            }

            // Return the item at the second index.
            if (e.MoveNext())
                yield return e.Current;

            // Return the items in the subset.
            foreach (T item in subset)
                yield return item;

            // Return the first (remembered) item.
            yield return rememberedItem;
        }

        // Return the remaining items in the list.
        while (e.MoveNext())
            yield return e.Current;
    }
}

Swap4 also makes a copy of (a subset of) the source. So worst case scenario, it is as slow and memory consuming as function Swap2.

I added below two lines in gradle.properties file

android.useAndroidX=true
android.enableJetifier=true

then I got the following error

error: package android.support.v7.app does not exist
import android.support.v7.app.AlertDialog;
                         ^
                         

I have removed the imports and added below line

import static android.app.AlertDialog.*;

And the classes which are extended from AppCompactActivity, added the below line. (For these errors you just need to press alt+enter in android studio which will import the correct library for you. Like this you can resolve all the errors)

import androidx.appcompat.app.AppCompatActivity;

In your xml file if you have used any

<android.support.v7.widget.Toolbar 

replace it with androidx.appcompat.widget.Toolbar

then in your java code

import androidx.appcompat.widget.Toolbar;

You can use visual studio 2015. Go to Tools => SQL server => New Data comparison

Select source and target Database.

You need to set the binding context of the ToolStripComboBox.ComboBox.

Here is a slightly modified version of the code that I have just recreated using Visual Studio. The menu item combo box is called toolStripComboBox1 in my case. Note the last line of code to set the binding context.

I noticed that if the combo is in the visible are of the toolstrip, the binding works without this but not when it is in a drop-down. Do you get the same problem?

If you can't get this working, drop me a line via my contact page and I will send you the project. You won't be able to load it using SharpDevelop but will with C# Express.

var languages = new string[2];
languages[0] = "English";
languages[1] = "German";

DataSet myDataSet = new DataSet();

// --- Preparation
DataTable lTable = new DataTable("Lang");
DataColumn lName = new DataColumn("Language", typeof(string));
lTable.Columns.Add(lName);

for (int i = 0; i < languages.Length; i++)
{
    DataRow lLang = lTable.NewRow();
    lLang["Language"] = languages[i];
    lTable.Rows.Add(lLang);
}
myDataSet.Tables.Add(lTable);

toolStripComboBox1.ComboBox.DataSource = myDataSet.Tables["Lang"].DefaultView;
toolStripComboBox1.ComboBox.DisplayMember = "Language";

toolStripComboBox1.ComboBox.BindingContext = this.BindingContext;

After adding new item to persons add:

myGrid.DataSource = null;
myGrid.DataSource = persons;

I'd share what I did, which works not only for Git, but MSYS/MinGW as well.

The HOME environment variable is not normally set for Windows applications, so creating it through Windows did not affect anything else. From the Computer Properties (right-click on Computer - or whatever it is named - in Explorer, and select Properties, or Control Panel -> System and Security -> System), choose Advanced system settings, then Environment Variables... and create a new one, HOME, and assign it wherever you like.

If you can't create new environment variables, the other answer will still work. (I went through the details of how to create environment variables precisely because it's so dificult to find.)

For just in case people are looking for solution for this:

<If "req('Host') = 'www.example.com'">
    Authtype Basic
    AuthName "user and password"
    AuthUserFile /var/www/www.example.com/.htpasswd
    Require valid-user
</If>

I found this reference:

create trigger myTrigger
on SomeTable
for insert 
as 
if (select count(*) 
    from SomeTable, inserted 
    where IsNumeric(SomeField) = 1) <> 0
/* Cancel the insert and print a message.*/
  begin
    rollback transaction 
    print "You can't do that!"  
  end  
/* Otherwise, allow it. */
else
  print "Added successfully."

I haven't tested it, but logically it looks like it should dp what you're after...rather than deleting the inserted data, prevent the insertion completely, thus not requiring you to have to undo the insert. It should perform better and should therefore ultimately handle a higher load with more ease.

Edit: Of course, there is the potential that if the insert happened inside of an otherwise valid transaction that the wole transaction could be rolled back so you would need to take that scenario into account and determine if the insertion of an invalid data row would constitute a completely invalid transaction...

An example would be nice - here's a trivial one

for %I in (*.*) do @echo %~xI

it lists only the EXTENSIONS of each file in current folder

for more useful variable combinations (also listed in previous response) from the CMD prompt execute: HELP FOR which contains this snippet

The modifiers can be combined to get compound results:

%~dpI       - expands %I to a drive letter and path only
%~nxI       - expands %I to a file name and extension only
%~fsI       - expands %I to a full path name with short names only
%~dp$PATH:I - searches the directories listed in the PATH
               environment variable for %I and expands to the
               drive letter and path of the first one found.
%~ftzaI     - expands %I to a DIR like output line

Try Boolean() and isNaN() (for number type) to check a variable has a value or not.

function isEmpty(val) {
  return typeof val === 'number' ? isNaN(val) : !Boolean(val);
}

var emptyVals = [undefined, null, false, NaN, ''];
emptyVals.forEach(v => console.log(isEmpty(v)));

If you want to ensure they all get called, use super at all levels.

Every library I can think of returns a stream. You could use IOUtils.toString() from Apache Commons IO to read an InputStream into a String in one method call. E.g.:

URL url = new URL("http://www.example.com/");
URLConnection con = url.openConnection();
InputStream in = con.getInputStream();
String encoding = con.getContentEncoding();
encoding = encoding == null ? "UTF-8" : encoding;
String body = IOUtils.toString(in, encoding);
System.out.println(body);

Update: I changed the example above to use the content encoding from the response if available. Otherwise it'll default to UTF-8 as a best guess, instead of using the local system default.

If you do not want to use other library, here is a simple function to convert InputStream to OutputStream.

public static void copyStream(InputStream in, OutputStream out) throws IOException {
    byte[] buffer = new byte[1024];
    int read;
    while ((read = in.read(buffer)) != -1) {
        out.write(buffer, 0, read);
    }
}

Now you can easily write an Inputstream into file by using FileOutputStream-

FileOutputStream out = new FileOutputStream(outFile);
copyStream (inputStream, out);
out.close();

There's actually a very good blog post that lists pro's and cons of three different approaches to this problem by Martyn Davies. You can read it at https://sendgrid.com/blog/embedding-images-emails-facts/.

I'd like to add a fourth approach using CSS background images.

Add

<div id="myImage"></div>

to your e-mail body and a css class like:

#myImage {
    background-image:  url('data:image/png;base64,iVBOR...[some more encoding]...rkggg==');
    width: [the-actual-image-width];
    height: [the-actual-image-height];
}

With 4.0, you will need to manage this yourself by setting the culture for each thread as Alexei describes. But with 4.5, you can define a culture for the appdomain and that is the preferred way to handle this. The relevant apis are CultureInfo.DefaultThreadCurrentCulture and CultureInfo.DefaultThreadCurrentUICulture.

Consider TCP over ATM. ATM uses 48 byte frames, but clearly TCP packets can be bigger than that. A frame is the chunk of data sent as a unit over the data link (Ethernet, ATM). A packet is the chunk of data sent as a unit over the layer above it (IP). If the data link is made specifically for IP, as Ethernet and WiFi are, these will be the same size and packets will correspond to frames.

Use PropertyInfo.PropertyType to get the type of the property.

public bool ValidateData(object data)
{
    foreach (PropertyInfo propertyInfo in data.GetType().GetProperties())
    {
        if (propertyInfo.PropertyType == typeof(string))
        {
            string value = propertyInfo.GetValue(data, null);

            if value is not OK
            {
                return false;
            }
        }
    }            

    return true;
}

In my case reload() doesn't work because the asp.net controls behavior. So, to solve this issue I've used this approach, despite seems a work around.

self.clear = function () {
    //location.reload(true); Doesn't work to IE neither Firefox;
    //also, hash tags must be removed or no postback will occur.
    window.location.href = window.location.href.replace(/#.*$/, '');
};

Enabling "Ensure right margin is not exceeded" doesn't work for me in Intellij IDEA 2018.2. I have found the workaround, we need to change every elements below from "Do not wrap" to "Wrap if long".

After that, we can preview what kind of wrap type will be changed by looking into right panel. If we are satisfied, Click "OK" or "Apply" to apply the changes. Finally we need a mannual format by using CTRL+ ALT+ L in Windows and Command+ Shift+ L in MacOS.

Get-ChildItem "D:\Server\User\CUST\MEA\Data\In\Files\CORRECTED\CUST_MEAFile.csv"
|Select-Object -ExpandProperty Name

Your footer container is constricting the width of the inner element with an explicit width on itself, which sees the text clipped at the end and wrapped onto a new line, so change that:

div#fv2-footer-container {
  width: 1090px;
  ...

You can use this function:

UIImageWriteToSavedPhotosAlbum(UIImage *image, 
                               id completionTarget, 
                               SEL completionSelector, 
                               void *contextInfo);

You only need completionTarget, completionSelector and contextInfo if you want to be notified when the UIImage is done saving, otherwise you can pass in nil.

See the official documentation for UIImageWriteToSavedPhotosAlbum().

Oracle does support WITH.

It would look like this.

WITH emps as (SELECT * FROM Employees)
SELECT * FROM emps WHERE ID < 20
UNION ALL
SELECT * FROM emps where Sex = 'F'

@ysth WITH is hard to google because it's a common word typically excluded from searches.

You'd want to look at the SELECT docs to see how subquery factoring works.

I know this doesn't answer the OP but I'm cleaning up any confusion ysth may have started.

I would go with option A:

String.Join(String.Empty, los.ToArray());

My reasoning is because the Join method was written for that purpose. In fact if you look at Reflector, you'll see that unsafe code was used to really optimize it. The other two also WORK, but I think the Join function was written for this purpose, and I would guess, the most efficient. I could be wrong though...

As per @Nuri YILMAZ without .ToArray(), but this is .NET 4+:

String.Join(String.Empty, los);

Xamarin

Label.Font = UIFont.FromName("Copperplate", 10.0f);

Swift

text.font = UIFont.init(name: "Poppins-Regular", size: 14)

To get the list of font family Github/IOS-UIFont-Names

Example using log4j (src\log4j.xml):

<?xml version="1.0" encoding="UTF-8" ?>

<appender name="CA" class="org.apache.log4j.AsyncAppender">
    <param name="BufferSize" value="512"/>
    <appender-ref ref="CA_OUTPUT"/>
</appender>
<appender name="CA_OUTPUT" class="org.apache.log4j.ConsoleAppender">
    <layout class="org.apache.log4j.PatternLayout">
        <param name="ConversionPattern" value="[%p] %d %c %M - %m%n"/>
    </layout>
</appender>

<logger name="org.hibernate.SQL" additivity="false">
    <level value="DEBUG"/>
    <appender-ref ref="CA"/>
</logger>

<root>
    <level value="WARN"/>
    <appender-ref ref="CA"/>
</root>

This is a server side issue. You don't need to add any headers in angular for cors. You need to add header on the server side:

Access-Control-Allow-Headers: Content-Type
Access-Control-Allow-Methods: GET, POST, OPTIONS
Access-Control-Allow-Origin: *

First two answers here: How to enable CORS in AngularJs

Use the options command, e.g. options(max.print=1000000).

See ?options:

 ‘max.print’: integer, defaulting to ‘99999’.  ‘print’ or ‘show’
      methods can make use of this option, to limit the amount of
      information that is printed, to something in the order of
      (and typically slightly less than) ‘max.print’ _entries_.

For me the problem was FTP server that WP is using to upload update. It had writting disabled in configuration, so just enabling it fixed the problem.

Shame on WordPress for providing such misleading error message.

Quoting http://php.net/manual/en/intro.mssql.php:

The MSSQL extension is not available anymore on Windows with PHP 5.3 or later. SQLSRV, an alternative driver for MS SQL is available from Microsoft: » http://msdn.microsoft.com/en-us/sqlserver/ff657782.aspx.

Once you downloaded that, follow the instructions at this page:

• Loading the Microsoft Drivers for PHP for SQL Server

In a nutshell:

Put the driver file in your PHP extension directory.
Modify the php.ini file to include the driver. For example:

extension=php_sqlsrv_53_nts_vc9.dll  

Restart the Web server.

See Also (copied from that page)

• System Requirements (Microsoft Drivers for PHP for SQL Server)
• Getting Started
• Programming Guide
• SQLSRV Driver API Reference (Microsoft Drivers for PHP for SQL Server)

The PHP Manual for the SQLSRV extension is located at http://php.net/manual/en/sqlsrv.installation.php and offers the following for Installation:

The SQLSRV extension is enabled by adding appropriate DLL file to your PHP extension directory and the corresponding entry to the php.ini file. The SQLSRV download comes with several driver files. Which driver file you use will depend on 3 factors: the PHP version you are using, whether you are using thread-safe or non-thread-safe PHP, and whether your PHP installation was compiled with the VC6 or VC9 compiler. For example, if you are running PHP 5.3, you are using non-thread-safe PHP, and your PHP installation was compiled with the VC9 compiler, you should use the php_sqlsrv_53_nts_vc9.dll file. (You should use a non-thread-safe version compiled with the VC9 compiler if you are using IIS as your web server). If you are running PHP 5.2, you are using thread-safe PHP, and your PHP installation was compiled with the VC6 compiler, you should use the php_sqlsrv_52_ts_vc6.dll file.

The drivers can also be used with PDO.

My issue ended up being visual studio catching an unhandled exception and preventing the script from running any further. Because I was running in the IDE, it looked like there was an issue when there wasn't. Autocomplete was working just fine. I added a try/catch block and that made the IDE happy.

 $.ajax({
            url: "/MyController/MyAction",
            type: "POST",
            dataType: "json",
            data: { prefix: request.term },
            success: function (data) {
                try {
                    response($.map(data, function (item) {
                        return { label: item.Name, value: item.Name };
                    }))
                } catch (err) { }

            }
        })

break; leaves your loop.

continue; skips any code for the remainder of that loop and goes on to the next loop, so long as the condition is still true.

Create a wrapper module project/bin/lib, which contains this:

import sys, os

sys.path.insert(0, os.path.join(
    os.path.dirname(os.path.dirname(os.path.realpath(__file__))), 'lib'))

import mylib

del sys.path[0], sys, os

Then you can replace all the cruft at the top of your scripts with:

#!/usr/bin/python
from lib import mylib

I found this post because I was having the same error in Microsoft Visual C++. (Though it seems it's cause was a little different, than the above posted question.)

I had placed the file, I was trying to include, in the same directory, but it still could not be found.

My include looked like this: #include <ftdi.h>

But When I changed it to this: #include "ftdi.h" then it found it.

One thing people might not consider: If you control the async function (which other pieces of code depend on), AND the codepath it would take is not necessarily asynchronous, you can make it synchronous (without breaking those other pieces of code) by creating an optional parameter.

Currently:

async function myFunc(args_etcetc) {
    // you wrote this
    return 'stuff';
}

(async function main() {
    var result = await myFunc('argsetcetc');
    console.log('async result:' result);
})()

Consider:

function myFunc(args_etcetc, opts={}) {
    /*
        param opts :: {sync:Boolean} -- whether to return a Promise or not
    */
    var {sync=false} = opts;
    if (sync===true)
        return 'stuff';
    else
        return new Promise((RETURN,REJECT)=> {
            RETURN('stuff');
        });
}


// async code still works just like before:
(async function main() {
    var result = await myFunc('argsetcetc');
    console.log('async result:', result);
})();
// prints: 'stuff'

// new sync code works, if you specify sync mode:
(function main() {
    var result = myFunc('argsetcetc', {sync:true});
    console.log('sync result:', result);
})();
// prints: 'stuff'

Of course this doesn't work if the async function relies on inherently async operations (network requests, etc.), in which case the endeavor is futile (without effectively waiting idle-spinning for no reason).

Also this is fairly ugly to return either a value or a Promise depending on the options passed in.

("Why would I have written an async function if it didn't use async constructs?" one might ask? Perhaps some modalities/parameters of the function require asynchronicity and others don't, and due to code duplication you wanted a monolithic block rather than separate modular chunks of code in different functions... For example perhaps the argument is either localDatabase (which doesn't require await) or remoteDatabase (which does). Then you could runtime error if you try to do {sync:true} on the remote database. Perhaps this scenario is indicative of another problem, but there you go.)

You can use css

.ads{pointer-events:none}

or Using javascript prevent event

$("selector").click(function(event){
   event.preventDefault();
});

Please check your Executable file inside .Framework like

1. The executable file name should like this without any extension.

2. Some frameworks showing like this

3. Using Terminal goto .framework directory use below command lipo -create FrameworkName-x86_64 FrameworkName-armv7 FrameworkName-armv7s FrameworkName-i386 FrameworkName-arm64 -output FrameworkName

after creating single executable file delete this files

UPDATE 2018-10-21:

As of this week, getRootDir() was deprecated. Please use getProjectDir() instead, as suggested in the comment section by Muzaraf Ali.

—-

Use this:

$this->get('kernel')->getRootDir();

And if you want the web root:

$this->get('kernel')->getRootDir() . '/../web' . $this->getRequest()->getBasePath();

this will work from controller action method...

EDIT: As for the services, I think the way you did it is as clean as possible, although I would pass complete kernel service as an argument... but this will also do the trick...

Your expression is never going to evaluate.

You are comparing a with a property of a.

a is of type Answer. a.Correct, I'm guessing is a boolean.

Long form:-

Answer = answer.SingleOrDefault(a => a.Correct == true);

Short form:-

Answer = answer.SingleOrDefault(a => a.Correct);

You can also check the default buffer size by calling the read only DEFAULT_BUFFER_SIZE attribute from io module.

import io
print (io.DEFAULT_BUFFER_SIZE)

You put inside img tag physical path you your image. Instead of that you should put virtual path (according to root of web application) to your image. This value depends on location of your image and your html page.

for example if you have:

/yourDir
-page.html
-66.jpg

in your page.html it should be something like that:

<img  src="66.jpg" width="400" height="400" ></img>

second scenario:

/images
-66.jpg
/html
page.html

So your img should look like:

<img  src="../images/66.jpg" width="400" height="400" ></img>

Another way of dealing with this situation if your files ARE already checked in, and your files have been merged (but not committed, so the merge conflicts are inserted into the file) is to run:

git reset

This will switch to HEAD, and tell git to forget any merge conflicts, and leave the working directory as is. Then you can edit the files in question (search for the "Updated upstream" notices). Once you've dealt with the conflicts, you can run

git add -p

which will allow you to interactively select which changes you want to add to the index. Once the index looks good (git diff --cached), you can commit, and then

git reset --hard

to destroy all the unwanted changes in your working directory.

NB This answer is factually incorrect; as pointed out by a comment below, success() does return the original promise. I'll not change; and leave it to OP to edit.

The major difference between the 2 is that .then() call returns a promise (resolved with a value returned from a callback) while .success() is more traditional way of registering callbacks and doesn't return a promise.

Promise-based callbacks (.then()) make it easy to chain promises (do a call, interpret results and then do another call, interpret results, do yet another call etc.).

The .success() method is a streamlined, convenience method when you don't need to chain call nor work with the promise API (for example, in routing).

In short:

• .then() - full power of the promise API but slightly more verbose
• .success() - doesn't return a promise but offeres slightly more convienient syntax

you can easily use

document.documentElement.clientWidth

Description

Assuming i understand your question.

You can get the selected row using the DataGridView.SelectedRows Collection. If your DataGridView allows only one selected, have a look at my sample.

DataGridView.SelectedRows Gets the collection of rows selected by the user.

Sample

if (dataGridView1.SelectedRows.Count != 0)
{
    DataGridViewRow row = this.dataGridView1.SelectedRows[0];
    row.Cells["ColumnName"].Value
}

More Information

• MSDN - DataGridView.SelectedRows Property

I had some problem to get it working on bootstrap 2.3.2. But i sloved it this way:

$(function () {
  $(document).mouseup(function (e) {
        if(($('.popover').length > 0) && !$(e.target).hasClass('popInfo')) {
            $('.popover').each(function(){
                $(this).prev('.popInfo').popover('hide');
            });
        }
    });

    $('.popInfo').popover({
        trigger: 'click',
        html: true
    });
});

If any one had the same problem as me and the charset was already correct, simply do this:

1. Copy all the code inside the .html file.
2. Open notepad (or any basic text editor) and paste the code.
3. Go "File -> Save As"
4. Enter you file name "example.html" (Select "Save as type: All Files (.)")
5. Select Encoding as UTF-8
6. Hit Save and you can now delete your old .html file and the encoding should be fixed

I had this error and other related ones, when I imported at 16 GB SQL file. For me, editing my.ini and setting the following (based on several different posts) in the [mysqld] section:

max_allowed_packet      = 110M
innodb_buffer_pool_size=511M
innodb_log_file_size=500M
innodb_log_buffer_size = 800M
net_read_timeout        = 600
net_write_timeout       = 600

If you are running under Windows, go to the control panel, services, and look at the details for MySQL and you will see where my.ini is. Then after you edit and save my.ini, restart the mysql service (or restart the computer).

If you are using HeidiSQL, you can also set some or all of these using that.

If a case-insensitive comparison is acceptable, just use =:

=IF(A1="ENG",1,0)

This will return the matching word or an error if no match is found. For this example I used the following.

List of words to search for: G1:G7
Cell to search in: A1

=INDEX(G1:G7,MAX(IF(ISERROR(FIND(G1:G7,A1)),-1,1)*(ROW(G1:G7)-ROW(G1)+1)))

Enter as an array formula by pressing Ctrl+Shift+Enter.

This formula works by first looking through the list of words to find matches, then recording the position of the word in the list as a positive value if it is found or as a negative value if it is not found. The largest value from this array is the position of the found word in the list. If no word is found, a negative value is passed into the INDEX() function, throwing an error.

To return the row number of a matching word, you can use the following:

=MAX(IF(ISERROR(FIND(G1:G7,A1)),-1,1)*ROW(G1:G7))

This also must be entered as an array formula by pressing Ctrl+Shift+Enter. It will return -1 if no match is found.

Brief code but full-featured

The following is a hybrid jQuery solution that formats each data "record" into an HTML element and uses the data's properties as HTML attribute values.

The jquery each runs the inner loop; I needed the regular JavaScript for on the outer loop to be able to grab the property name (instead of value) for display as the heading. According to taste it can be modified for slightly different behaviour.

This is only 5 main lines of code but wrapped onto multiple lines for display:

$.get("data.php", function(data){

    for (var propTitle in data) {

        $('<div></div>') 
            .addClass('heading')
            .insertBefore('#contentHere')
            .text(propTitle);

            $(data[propTitle]).each(function(iRec, oRec) {

                $('<div></div>')
                    .addClass(oRec.textType)
                    .attr('id', 'T'+oRec.textId)
                    .insertBefore('#contentHere')
                    .text(oRec.text);
            });
    }

});

Produces the output

(Note: I modified the JSON data text values by prepending a number to ensure I was displaying the proper records in the proper sequence - while "debugging")

<div class="heading">
    justIn
</div>
<div id="T123" class="Greeting">
    1Hello
</div>
<div id="T514" class="Question">
    1What's up?
</div>
<div id="T122" class="Order">
    1Come over here
</div>
<div class="heading">
    recent
</div>
<div id="T1255" class="Greeting">
    2Hello
</div>
<div id="T6564" class="Question">
    2What's up?
</div>
<div id="T0192" class="Order">
    2Come over here
</div>
<div class="heading">
    old
</div>
<div id="T5213" class="Greeting">
    3Hello
</div>
<div id="T9758" class="Question">
    3What's up?
</div>
<div id="T7655" class="Order">
    3Come over here
</div>
<div id="contentHere"></div>

Apply a style sheet

<style>
.heading { font-size: 24px; text-decoration:underline }
.Greeting { color: green; }
.Question { color: blue; }
.Order { color: red; }
</style>

to get a "beautiful" looking set of data

More Info
The JSON data was used in the following way:

for each category (key name the array is held under):

• the key name is used as the section heading (e.g. justIn)

for each object held inside an array:

• 'text' becomes the content of a div
• 'textType' becomes the class of the div (hooked into a style sheet)
• 'textId' becomes the id of the div
• e.g. <div id="T122" class="Order">Come over here</div>

I had the same problem on my web server "No connection could be made because the target machine actively refused it 161.x.x.235:5672". I asked the Admin to open the port 5672 on the web server, then it worked fine.

Try this:

• Tested in Angular 8
• values are positive
• This code also handels null and negitive values.

              <input
                type="number"
                min="0"
                (input)="funcCall()" -- Optional
                oninput="value == '' ? value = 0 : value < 0 ? value = value * -1 : false"
                formControlName="RateQty"
                [(value)]="some.variable" -- Optional
              />

I don't think you can its an operator and its suppose to return one or the other. It's not if else statement replacement although it can be use for that on certain case.

A char is actually a numeric datatype - you can add one to an int, for example. It's an unsigned short (16 bits). In that regard you can just cast the output to, say, an int to get the numeric value.

However you need to think a little more about what it is you're asking - not all characters are ASCII values. What output do you expect for â, for example, or ??

Moreover, why do you want this? In this day and age you ought to be thinking about Unicode, not ASCII. If you let people know what your goal is, and how you intend to use this returned value, we can almost certainly let you know of a better way to achieve it.

So to upgrade scikit-learn package, you have to follow below process

Step-1: Open your terminal(Ctrl+Alt+t)

Step-2: Now for checking currently installed packages along with the versions installed on your conda environment by typing conda list

Step-3: Now for upgrade type below command

conda update scikit-learn

Hope it helps!!

You'll want to do floating point division, and then use the ceiling function, to round up the value to the next integer.

You can get the different values with:

set(Article.objects.values_list('comment_id', flat=True))

In order to clean the whole line (2 different ways):

• Home , Ctrl+K
• End , Ctrl+U

For me, my problem was I needed to navigate back and then transition to another state. So using $window.history.back() didn't work because for some reason the transition happened before history.back() occured so I had to wrap my transition in a timeout function like so.

$window.history.back();
setTimeout(function() {
  $state.transitionTo("tab.jobs"); }, 100);

This fixed my issue.

The CSS below stops users from being able to select text.

-webkit-user-select: none; /* Safari */        
-moz-user-select: none; /* Firefox */
-ms-user-select: none; /* IE10+/Edge */
user-select: none; /* Standard */

To target IE9 downwards the html attribute unselectable must be used instead:

<p unselectable="on">Test Text</p>

In GitHub Desktop you can just right click the commit and revert it, which will create a new commit that undoes the changes.

The accidental commit will still be in your history (which may be an issue if, for instance, you've accidentally commited an API key or password) but the code will be reverted.

This is the simplest and easiest option, the accepted answer is more comprehensive.

If an element has bootstrap's "hide" class and you want to display it with some sliding effect such as .slideDown(), you can cheat bootstrap like:

$('#hiddenElement').hide().removeClass('hide').slideDown('fast')

The latest google api docs document how to write to a spreadsheet with python but it's a little difficult to navigate to. Here is a link to an example of how to append.

The following code is my first successful attempt at appending to a google spreadsheet.

import httplib2
import os

from apiclient import discovery
import oauth2client
from oauth2client import client
from oauth2client import tools

try:
    import argparse
    flags = argparse.ArgumentParser(parents=[tools.argparser]).parse_args()
except ImportError:
    flags = None

# If modifying these scopes, delete your previously saved credentials
# at ~/.credentials/sheets.googleapis.com-python-quickstart.json
SCOPES = 'https://www.googleapis.com/auth/spreadsheets'
CLIENT_SECRET_FILE = 'client_secret.json'
APPLICATION_NAME = 'Google Sheets API Python Quickstart'


def get_credentials():
    """Gets valid user credentials from storage.

    If nothing has been stored, or if the stored credentials are invalid,
    the OAuth2 flow is completed to obtain the new credentials.

    Returns:
        Credentials, the obtained credential.
    """
    home_dir = os.path.expanduser('~')
    credential_dir = os.path.join(home_dir, '.credentials')
    if not os.path.exists(credential_dir):
        os.makedirs(credential_dir)
    credential_path = os.path.join(credential_dir,
                                   'mail_to_g_app.json')

    store = oauth2client.file.Storage(credential_path)
    credentials = store.get()
    if not credentials or credentials.invalid:
        flow = client.flow_from_clientsecrets(CLIENT_SECRET_FILE, SCOPES)
        flow.user_agent = APPLICATION_NAME
        if flags:
            credentials = tools.run_flow(flow, store, flags)
        else: # Needed only for compatibility with Python 2.6
            credentials = tools.run(flow, store)
        print('Storing credentials to ' + credential_path)
    return credentials

def add_todo():
    credentials = get_credentials()
    http = credentials.authorize(httplib2.Http())
    discoveryUrl = ('https://sheets.googleapis.com/$discovery/rest?'
                    'version=v4')
    service = discovery.build('sheets', 'v4', http=http,
                              discoveryServiceUrl=discoveryUrl)

    spreadsheetId = 'PUT YOUR SPREADSHEET ID HERE'
    rangeName = 'A1:A'

    # https://developers.google.com/sheets/guides/values#appending_values
    values = {'values':[['Hello Saturn',],]}
    result = service.spreadsheets().values().append(
        spreadsheetId=spreadsheetId, range=rangeName,
        valueInputOption='RAW',
        body=values).execute()

if __name__ == '__main__':
    add_todo()

Let's start with this small df:

import pandas as pd
import time as tm
import numpy as np
n=10
a=np.arange(0,n**2)
df=pd.DataFrame(a.reshape(n,n))

We'll so have

df
Out[25]: 
        0   1   2   3   4   5   6   7   8   9
    0   0   1   2   3   4   5   6   7   8   9
    1  10  11  12  13  14  15  16  17  18  19
    2  20  21  22  23  24  25  26  27  28  29
    3  30  31  32  33  34  35  36  37  38  39
    4  40  41  42  43  44  45  46  47  48  49
    5  50  51  52  53  54  55  56  57  58  59
    6  60  61  62  63  64  65  66  67  68  69
    7  70  71  72  73  74  75  76  77  78  79
    8  80  81  82  83  84  85  86  87  88  89
    9  90  91  92  93  94  95  96  97  98  99

With this we have:

df.iloc[3,3]
Out[33]: 33

df.iat[3,3]
Out[34]: 33

df.iloc[:3,:3]
Out[35]: 
    0   1   2   3
0   0   1   2   3
1  10  11  12  13
2  20  21  22  23
3  30  31  32  33



df.iat[:3,:3]
Traceback (most recent call last):
   ... omissis ...
ValueError: At based indexing on an integer index can only have integer indexers

Thus we cannot use .iat for subset, where we must use .iloc only.

But let's try both to select from a larger df and let's check the speed ...

# -*- coding: utf-8 -*-
"""
Created on Wed Feb  7 09:58:39 2018

@author: Fabio Pomi
"""

import pandas as pd
import time as tm
import numpy as np
n=1000
a=np.arange(0,n**2)
df=pd.DataFrame(a.reshape(n,n))
t1=tm.time()
for j in df.index:
    for i in df.columns:
        a=df.iloc[j,i]
t2=tm.time()
for j in df.index:
    for i in df.columns:
        a=df.iat[j,i]
t3=tm.time()
loc=t2-t1
at=t3-t2
prc = loc/at *100
print('\nloc:%f at:%f prc:%f' %(loc,at,prc))

loc:10.485600 at:7.395423 prc:141.784987

So with .loc we can manage subsets and with .at only a single scalar, but .at is faster than .loc

:-)

The "lsb_release" command provides certain Linux Standard Base and distribution-specific information. So using the below command we can get Operating system name and operating system version.

"lsb_release -a"

I had trouble with this using matplotlib version: 2.0.2. Running the example from above I got a centered stacked set of bubbles.

I "fixed" the problem by adding another line:

plt.plot([],[])

The entire code snippet becomes:

import datetime
import random
import matplotlib.pyplot as plt
import matplotlib.dates as mdates


# make up some data
x = [datetime.datetime.now() + datetime.timedelta(minutes=i) for i in range(12)]
y = [i+random.gauss(0,1) for i,_ in enumerate(x)]

# plot
plt.plot([],[])
plt.scatter(x,y)

# beautify the x-labels
plt.gcf().autofmt_xdate()
myFmt = mdates.DateFormatter('%H:%M')
plt.gca().xaxis.set_major_formatter(myFmt)

plt.show()
plt.close()

This produces an image with the bubbles distributed as desired.

This code works for me:

#!/bin/sh

argc=$#
echo $argc
if [ $argc -eq 0 -o $argc -eq 1 ]; then
  echo "foo"
else
  echo "bar"
fi

I don't think sh supports "==". Use "=" to compare strings and -eq to compare ints.

man test

for more details.

$before = microtime(true);

$n = 1000;  
$numbers = range(1,$n);

$cube_numbers = array_map('cube',$numbers);

function cube($n){      
    $msg ='even';       
    if($n%2 !=0){
        $msg = 'odd';
    }               
    return "The Number is $n is ".$msg;
}

foreach($cube_numbers as $cube){
    echo $cube . "<br/>";
}

$after = microtime(true);

echo $after-$before. 'seconds';

from run_time import run_time
from random_arr import make_arr

def merge(arr1: list, arr2: list):
    temp = []
    x, y = 0, 0
    while len(arr1) and len(arr2):
        if arr1[0] < arr2[0]:
            temp.append(arr1[0])
            x += 1
            arr1 = arr1[x:]
        elif arr1[0] > arr2[0]:
            temp.append(arr2[0])
            y += 1
            arr2 = arr2[y:]
        else:
            temp.append(arr1[0])
            temp.append(arr2[0])
            x += 1
            y += 1
            arr1 = arr1[x:]
            arr2 = arr2[y:]

    if len(arr1) > 0:
        temp += arr1
    if len(arr2) > 0:
        temp += arr2
    return temp

@run_time
def merge_sort(arr: list):
    total = len(arr)
    step = 2
    while True:
        for i in range(0, total, step):
            arr[i:i + step] = merge(arr[i:i + step//2], arr[i + step//2:i + step])
        step *= 2
        if step > 2 * total:
            return arr

arr = make_arr(20000)
merge_sort(arr)
# run_time is 0.10300588607788086

1. Connect Android device to PC via USB cable and turn on USB storage.
2. Copy .apk file to attached device's storage.
3. Turn off USB storage and disconnect it from PC.
4. Check the option Settings ? Applications ? Unknown sources OR Settings > Security > Unknown Sources.
5. Open FileManager app and click on the copied .apk file. If you can't fine the apk file try searching or allowing hidden files. It will ask you whether to install this app or not. Click Yes or OK.

This procedure works even if ADB is not available.

The bracket notation allows you to access properties by name stored in a variable:

var obj = { "abc" : "hello" };
var x = "abc";
var y = obj[x];
console.log(y); //output - hello

obj.x would not work in this case.

Try the following:

df[df['Col2'].isnull()]

see http://editorconfig.org and https://docs.microsoft.com/en-us/visualstudio/ide/create-portable-custom-editor-options?view=vs-2017

1. If it does not exist, add a new file called .editorconfig for your project

2. manipulate editor config to use your preferred behaviour.

I prefer spaces over tabs, and CRLF for all code files.
Here's my .editorconfig

# http://editorconfig.org
root = true

[*]
indent_style = space
indent_size = 4
end_of_line = crlf
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true

[*.md]
trim_trailing_whitespace = false

[*.tmpl.html]
indent_size = 4

[*.scss]
indent_size = 2 

I think what you are doing is subject to the same origin policy. This should be the reason why you are getting permission denied type errors.

The Muffin Man had a very simple answer which worked for me.

To add a little more specific direction, at least for VS 2013:

• Right-click the control
• Select Edit Template => Edit a copy...
• I selected 'Application' for where to save the style
  • From here you can directly edit App.xaml and see the intuitively named properties. For my purposes, I just set RenderMouseOver="False"
• Then, in the MainWindow.xaml or wherever your GUI is, you can paste the new style at the end of the Button tag, e.g. ... Style="{DynamicResource MouseOverNonDefault}"/>

If you are using PHP as a fastCGI application then make sure you check the fastCGI timeout settings. See: PHP curl put 500 error

It's easier to use the timestamp for this things since Tweepy gets both

import datetime
print(datetime.datetime.fromtimestamp(int(t1)).strftime('%H:%M'))

I don't think you can do this with the standard tools. You can use ipcs -mp to get the process ID of the last process to attach/detach but I'm not aware of how to get all attached processes with ipcs.

With a two-process-attached segment, assuming they both stayed attached, you can possibly figure out from the creator PID cpid and last-attached PID lpid which are the two processes but that won't scale to more than two processes so its usefulness is limited.

The cat /proc/sysvipc/shm method seems similarly limited but I believe there's a way to do it with other parts of the /proc filesystem, as shown below:

When I do a grep on the procfs maps for all processes, I get entries containing lines for the cpid and lpid processes.

For example, I get the following shared memory segment from ipcs -m:

------ Shared Memory Segments --------
key        shmid      owner      perms      bytes      nattch     status      
0x00000000 123456     pax        600        1024       2          dest

and, from ipcs -mp, the cpid is 3956 and the lpid is 9999 for that given shared memory segment (123456).

Then, with the command grep 123456 /proc/*/maps, I see:

/proc/3956/maps: blah blah blah 123456 /SYSV000000 (deleted)
/proc/9999/maps: blah blah blah 123456 /SYSV000000 (deleted)

So there is a way to get the processes that attached to it. I'm pretty certain that the dest status and (deleted) indicator are because the creator has marked the segment for destruction once the final detach occurs, not that it's already been destroyed.

So, by scanning of the /proc/*/maps "files", you should be able to discover which PIDs are currently attached to a given segment.

string formatted = date.ToString("dd-MM-yyyy");

will do it.

Here is a good reference for different formats.

Prefix the call with Module2 (ex. Module2.IDLE). I'm assuming since you asked this that you have IDLE defined multiple times in the project, otherwise this shouldn't be necessary.

In your Safari menu bar click Safari > Preferences & then select the Advanced tab.

Select: "Show Develop menu in menu bar"

Now you can click Develop in your menu bar and choose Show Web Inspector

You can also right-click and press "Inspect element".

When creating a file, use slashes to specify the directory. For example:

Name the file:

repositoryname/newfoldername/filename

GitHub will automatically create a folder with the name newfoldername.

Starting on Psych 3.0 you can add the symbolize_names: option

Psych.load("---\n foo: bar") # => {"foo"=>"bar"}

Psych.load("---\n foo: bar", symbolize_names: true) # => {:foo=>"bar"}

Note: if you have a lower Psych version than 3.0 symbolize_names: will be silently ignored.

My Ubuntu 18.04 includes it out of the box with ruby 2.5.1p57

As others have noted, it is usually preferable to specify a minimum logging level to log that level and any others more severe than it. It seems like you are just thinking about the logging levels backwards.

However, if you want more fine-grained control over logging individual levels, you can tell log4net to log only one or more specific levels using the following syntax:

<filter type="log4net.Filter.LevelMatchFilter">
  <levelToMatch value="WARN"/>
</filter>

Or to exclude a specific logging level by adding a "deny" node to the filter.

You can stack multiple filters together to specify multiple levels. For instance, if you wanted only WARN and FATAL levels. If the levels you wanted were consecutive, then the LevelRangeFilter is more appropriate.

Reference Doc: log4net.Filter.LevelMatchFilter

If the other answers haven't given you enough information, hopefully this will help you get what you want out of log4net.

This is the problem:

while(str.charAt(i)==ch)

That will keep going until it falls off the end... when i is the same as the length of the string, it will be asking for a character beyond the end of the string. You probably want:

while (i < str.length() && str.charAt(i) == ch)

You also need to set count to 0 at the start of each iteration of the bigger loop - the count resets, after all - and change

count = count + i;

to either:

count++;

... or get rid of count or i. They're always going to have the same value, after all. Personally I'd just use one variable, declared and initialized inside the loop. That's a general style point, in fact - it's cleaner to declare local variables when they're needed, rather than declaring them all at the top of the method.

However, then your program will loop forever, as this doesn't do anything useful:

str.substring(count);

Strings are immutable in Java - substring returns a new string. I think you want:

str = str.substring(count);

Note that this will still output "a2b2a2" for "aabbaa". Is that okay?

In May 2019, the answer is as follows for MacOS:

conda update freetype
conda install opencv -c conda-forge

This updates libfreetype.6.dylib to 24.0.0 compatibility and installs OpenCV 4.1.0.

Like this:

var myString = "19 51 2.108997";
var stringParts = myString.split(" ");
var html = "<span>" + stringParts[0] + " " + stringParts[1] + "</span> <span>" + stringParts[2] + "</span";

I need to do this trick, maybe because I use a custom HTML element. If I do not do this, target in onItemAmounterClick won't have the scrollIntoView method

.html

<div *ngFor"...">
      <my-component #target (click)="clicked(target)"></my-component>
</div>

.ts

onItemAmounterClick(target){
  target.__ngContext__[0].scrollIntoView({behavior: 'smooth'});
}

You are correct. You did exactly the right thing, checking the query plan rather than trying to second-guess the optimiser. :-)

If this is an Observable being return in the HTML simply add the async pipe

    observable | async

For what it's worth, I just had to handle this in my ASP.NET MVC 3 application. Here is the code block I used in the Global.asax file to handle this for all requests.

    protected void Application_BeginRequest()
    {
        //NOTE: Stopping IE from being a caching whore
        HttpContext.Current.Response.Cache.SetAllowResponseInBrowserHistory(false);
        HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
        HttpContext.Current.Response.Cache.SetNoStore();
        Response.Cache.SetExpires(DateTime.Now);
        Response.Cache.SetValidUntilExpires(true);
    }

I waste too much time on this, and none of the previous answers work. I find that Avast is the issue!!! If you have Avast installed in your system, you have to:

Go to settings tab --> troubleshooting, then you should UNCHECK the "enable hardware-assisted virtualization"

Restart your PC and install the intelhaxm-android.exe if it is not installed. You can find it in C:\Users\{YOUR USERNAME}\AppData\Local\Android\sdk\extras\intel\Hardware_Accelerated_Execution_Manager

1. Go to My computer -> right click -> system properties -> environmental variables -> Path -> add you jdk/bin to this path

   C:\Program Files\Java\jdk1.8.0_211\bin
   

*if this not work then

2. In cmd set the path by using the below command

   set PATH=C:\Program Files\Java\jdk1.8.0_211\bin
   

now the path is set now you can use the keytool

I know my solution is not very popular from the pythonic point of view, but I prefer to use the Java approach of one module->one class, with the module named as the class. I do understand the reason behind the python style, but I am not too fond of having a very large file containing a lot of classes. I find it difficult to browse, despite folding.

Another reason is version control: having a large file means that your commits tend to concentrate on that file. This can potentially lead to a higher quantity of conflicts to be resolved. You also loose the additional log information that your commit modifies specific files (therefore involving specific classes). Instead you see a modification to the module file, with only the commit comment to understand what modification has been done.

Summing up, if you prefer the python philosophy, go for the suggestions of the other posts. If you instead prefer the java-like philosophy, create a Nib.py containing class Nib.

try this

var json = [{
    "id" : "1", 
    "msg"   : "hi",
    "tid" : "2013-05-05 23:35",
    "fromWho": "[email protected]"
},
{
    "id" : "2", 
    "msg"   : "there",
    "tid" : "2013-05-05 23:45",
    "fromWho": "[email protected]"
}];

json.forEach((item) => {
  console.log('ID: ' + item.id);
  console.log('MSG: ' + item.msg);
  console.log('TID: ' + item.tid);
  console.log('FROMWHO: ' + item.fromWho);
});

I'm not much of a php programmer, but I can say that in C# you cannot modify an array while iterating through it. You may want to try using your foreach loop to identify the index of the element, or elements to remove, then delete the elements after the loop.

Just thought i would share a solution also based on this that works with the Knowntype attribute using reflection , had to get derived class from any base class, solution can benefit from recursion to find the best matching class though i didn't need it in my case, matching is done by the type given to the converter if it has KnownTypes it will scan them all until it matches a type that has all the properties inside the json string, first one to match will be chosen.

usage is as simple as:

 string json = "{ Name:\"Something\", LastName:\"Otherthing\" }";
 var ret  = JsonConvert.DeserializeObject<A>(json, new KnownTypeConverter());

in the above case ret will be of type B.

JSON classes:

[KnownType(typeof(B))]
public class A
{
   public string Name { get; set; }
}

public class B : A
{
   public string LastName { get; set; }
}

Converter code:

/// <summary>
    /// Use KnownType Attribute to match a divierd class based on the class given to the serilaizer
    /// Selected class will be the first class to match all properties in the json object.
    /// </summary>
    public  class KnownTypeConverter : JsonConverter
    {
        public override bool CanConvert(Type objectType)
        {
            return System.Attribute.GetCustomAttributes(objectType).Any(v => v is KnownTypeAttribute);
        }

        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
        {
            // Load JObject from stream
            JObject jObject = JObject.Load(reader);

            // Create target object based on JObject
            System.Attribute[] attrs = System.Attribute.GetCustomAttributes(objectType);  // Reflection. 

                // Displaying output. 
            foreach (System.Attribute attr in attrs)
            {
                if (attr is KnownTypeAttribute)
                {
                    KnownTypeAttribute k = (KnownTypeAttribute) attr;
                    var props = k.Type.GetProperties();
                    bool found = true;
                    foreach (var f in jObject)
                    {
                        if (!props.Any(z => z.Name == f.Key))
                        {
                            found = false;
                            break;
                        }
                    }

                    if (found)
                    {
                        var target = Activator.CreateInstance(k.Type);
                        serializer.Populate(jObject.CreateReader(),target);
                        return target;
                    }
                }
            }
            throw new ObjectNotFoundException();


            // Populate the object properties

        }

        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
        {
            throw new NotImplementedException();
        }
    }

The problem according to your traceback is the print statement on line 136 of parseXML.py. Unfortunately you didn't see fit to post that part of your code, but I'm going to guess it is just there for debugging. If you change it to:

print repr(ch)

then you should at least see what you are trying to print.

You can also use:

dat1 = pd.concat([dat1, dat2], axis=1)

Now your query is explicitly looking at only payments for year = 2010, however, I think you meant to have your Jan/Feb/Mar actually represent 2009. If so, you'll need to adjust this a bit for that case. Don't keep requerying the sum values for every column, just the condition of the date difference in months. Put the rest in the WHERE clause.

SELECT 
      SUM( case when DateDiff(m, PaymentDate, @start) = 0 
           then Amount else 0 end ) AS "Apr",
      SUM( case when DateDiff(m, PaymentDate, @start) = 1 
           then Amount else 0 end ) AS "May",
      SUM( case when DateDiff(m, PaymentDate, @start) = 2 
           then Amount else 0 end ) AS "June",
      SUM( case when DateDiff(m, PaymentDate, @start) = 3 
           then Amount else 0 end ) AS "July",
      SUM( case when DateDiff(m, PaymentDate, @start) = 4 
           then Amount else 0 end ) AS "Aug",
      SUM( case when DateDiff(m, PaymentDate, @start) = 5 
           then Amount else 0 end ) AS "Sep",
      SUM( case when DateDiff(m, PaymentDate, @start) = 6 
           then Amount else 0 end ) AS "Oct",
      SUM( case when DateDiff(m, PaymentDate, @start) = 7 
           then Amount else 0 end ) AS "Nov",
      SUM( case when DateDiff(m, PaymentDate, @start) = 8 
           then Amount else 0 end ) AS "Dec",
      SUM( case when DateDiff(m, PaymentDate, @start) = 9 
           then Amount else 0 end ) AS "Jan",
      SUM( case when DateDiff(m, PaymentDate, @start) = 10 
           then Amount else 0 end ) AS "Feb",
      SUM( case when DateDiff(m, PaymentDate, @start) = 11 
           then Amount else 0 end ) AS "Mar"
   FROM 
      Payments I
         JOIN Live L
            on I.LiveID = L.Record_Key
   WHERE 
          Year = 2010 
      AND UserID = 100

You can also build up a list of lists and convert it to a dataframe -

import pandas as pd

columns = ['i','double','square']
rows = []

for i in range(6):
    row = [i, i*2, i*i]
    rows.append(row)

df = pd.DataFrame(rows, columns=columns)

giving

    i   double  square
0   0   0   0
1   1   2   1
2   2   4   4
3   3   6   9
4   4   8   16
5   5   10  25

1. Installing OpenCV 2.4.3

First, get OpenCV 2.4.3 from sourceforge.net. Its a self-extracting so just double click to start the installation. Install it in a directory, say C:\.

Wait until all files get extracted. It will create a new directory C:\opencv which contains OpenCV header files, libraries, code samples, etc.

Now you need to add the directory C:\opencv\build\x86\vc10\bin to your system PATH. This directory contains OpenCV DLLs required for running your code.

Open Control Panel → System → Advanced system settings → Advanced Tab → Environment variables...

On the System Variables section, select Path (1), Edit (2), and type C:\opencv\build\x86\vc10\bin; (3), then click Ok.

On some computers, you may need to restart your computer for the system to recognize the environment path variables.

This will completes the OpenCV 2.4.3 installation on your computer.

2. Create a new project and set up Visual C++

Open Visual C++ and select File → New → Project... → Visual C++ → Empty Project. Give a name for your project (e.g: cvtest) and set the project location (e.g: c:\projects).

Click Ok. Visual C++ will create an empty project.

Make sure that "Debug" is selected in the solution configuration combobox. Right-click cvtest and select Properties → VC++ Directories.

Select Include Directories to add a new entry and type C:\opencv\build\include.

Click Ok to close the dialog.

Back to the Property dialog, select Library Directories to add a new entry and type C:\opencv\build\x86\vc10\lib.

Click Ok to close the dialog.

Back to the property dialog, select Linker → Input → Additional Dependencies to add new entries. On the popup dialog, type the files below:

opencv_calib3d243d.lib
opencv_contrib243d.lib
opencv_core243d.lib
opencv_features2d243d.lib
opencv_flann243d.lib
opencv_gpu243d.lib
opencv_haartraining_engined.lib
opencv_highgui243d.lib
opencv_imgproc243d.lib
opencv_legacy243d.lib
opencv_ml243d.lib
opencv_nonfree243d.lib
opencv_objdetect243d.lib
opencv_photo243d.lib
opencv_stitching243d.lib
opencv_ts243d.lib
opencv_video243d.lib
opencv_videostab243d.lib

Note that the filenames end with "d" (for "debug"). Also note that if you have installed another version of OpenCV (say 2.4.9) these filenames will end with 249d instead of 243d (opencv_core249d.lib..etc).

Click Ok to close the dialog. Click Ok on the project properties dialog to save all settings.

NOTE:

These steps will configure Visual C++ for the "Debug" solution. For "Release" solution (optional), you need to repeat adding the OpenCV directories and in Additional Dependencies section, use:

opencv_core243.lib
opencv_imgproc243.lib
...

instead of:

opencv_core243d.lib
opencv_imgproc243d.lib
...

You've done setting up Visual C++, now is the time to write the real code. Right click your project and select Add → New Item... → Visual C++ → C++ File.

Name your file (e.g: loadimg.cpp) and click Ok. Type the code below in the editor:

#include <opencv2/highgui/highgui.hpp>
#include <iostream>

using namespace cv;
using namespace std;

int main()
{
    Mat im = imread("c:/full/path/to/lena.jpg");
    if (im.empty()) 
    {
        cout << "Cannot load image!" << endl;
        return -1;
    }
    imshow("Image", im);
    waitKey(0);
}

The code above will load c:\full\path\to\lena.jpg and display the image. You can use any image you like, just make sure the path to the image is correct.

Type F5 to compile the code, and it will display the image in a nice window.

And that is your first OpenCV program!

3. Where to go from here?

Now that your OpenCV environment is ready, what's next?

1. Go to the samples dir → c:\opencv\samples\cpp.
2. Read and compile some code.
3. Write your own code.

I have build such kind of application using approximatively the same approach except :

• I cache the generated image on the disk and always generate two to three images in advance in a separate thread.
• I don't overlay with a UIImage but instead draw the image in the layer when zooming is 1. Those tiles will be released automatically when memory warnings are issued.

Whenever the user start zooming, I acquire the CGPDFPage and render it using the appropriate CTM. The code in - (void)drawLayer: (CALayer*)layer inContext: (CGContextRef) context is like :

CGAffineTransform currentCTM = CGContextGetCTM(context);    
if (currentCTM.a == 1.0 && baseImage) {
    //Calculate ideal scale
    CGFloat scaleForWidth = baseImage.size.width/self.bounds.size.width;
    CGFloat scaleForHeight = baseImage.size.height/self.bounds.size.height; 
    CGFloat imageScaleFactor = MAX(scaleForWidth, scaleForHeight);

    CGSize imageSize = CGSizeMake(baseImage.size.width/imageScaleFactor, baseImage.size.height/imageScaleFactor);
    CGRect imageRect = CGRectMake((self.bounds.size.width-imageSize.width)/2, (self.bounds.size.height-imageSize.height)/2, imageSize.width, imageSize.height);
    CGContextDrawImage(context, imageRect, [baseImage CGImage]);
} else {
    @synchronized(issue) { 
        CGPDFPageRef pdfPage = CGPDFDocumentGetPage(issue.pdfDoc, pageIndex+1);
        pdfToPageTransform = CGPDFPageGetDrawingTransform(pdfPage, kCGPDFMediaBox, layer.bounds, 0, true);
        CGContextConcatCTM(context, pdfToPageTransform);    
        CGContextDrawPDFPage(context, pdfPage);
    }
}

issue is the object containg the CGPDFDocumentRef. I synchronize the part where I access the pdfDoc property because I release it and recreate it when receiving memoryWarnings. It seems that the CGPDFDocumentRef object do some internal caching that I did not find how to get rid of.

Keyword Arguments are often shortened to kwargs in Python. In computer programming,

keyword arguments refer to a computer language's support for function calls that clearly state the name of each parameter within the function call.

The usage of the two asterisk before the parameter name, **kwargs, is when one doesn't know how many keyword arguments will be passed into the function. When that's the case, it's called Arbitrary / Wildcard Keyword Arguments.

One example of this is Django's receiver functions.

def my_callback(sender, **kwargs):
    print("Request finished!")

Notice that the function takes a sender argument, along with wildcard keyword arguments (**kwargs); all signal handlers must take these arguments. All signals send keyword arguments, and may change those keyword arguments at any time. In the case of request_finished, it’s documented as sending no arguments, which means we might be tempted to write our signal handling as my_callback(sender).

This would be wrong – in fact, Django will throw an error if you do so. That’s because at any point arguments could get added to the signal and your receiver must be able to handle those new arguments.

Note that it doesn't have to be called kwargs, but it needs to have ** (the name kwargs is a convention).

In my case it was caused by starting IIS with no administrative rights. When I launched IIS as admin and started the site it worked fine