Tutorial by Examples: w

This error is thrown when a process in your web dyno accepts a connection, but then closes the socket without writing anything to it. 2010-10-06T21:51:37-07:00 heroku[router]: at=error code=H13 desc="Connection closed without response" method=GET path="/" host=myapp.herokuapp.co...

This is most likely the result of scaling your web dynos down to 0 dynos. To fix it, scale your web dynos to 1 or more dynos: $ heroku ps:scale web=1 Use the heroku ps command to determine the state of your web dynos. 2010-10-06T21:51:37-07:00 heroku[router]: at=error code=H14 desc="No web...

OS X Download and run the OS X installer. Windows Download and run the Windows installer 32-bit 64-bit. Debian/Ubuntu Run the following to add our apt repository and install the CLI: $ sudo add-apt-repository "deb https://cli-assets.heroku.com/branches/stable/apt ./" $ curl -L https...

Suppose we have a SharePoint list and it has four fields viz. Title, Full Name, Email, Mobile Number etc. Now if you want to apply custom validation in New/Edit Item form, you can easily do it with CSR code. The below mentioned can validate following conditions in forms: Blank values in fields ...

Tracking your app in git Before you can push an app to Heroku, you’ll need to initialize a local Git repository and commit your files to it. For example, if you have an app in a directory, myapp, then create a new repository for it: $ cd myapp $ git init Initialized empty Git repository in .git/...

app\Exceptions\Handler.php public function render($request, Exception $exception) { if ($exception instanceof ModelNotFoundException) { abort(404); } return parent::render($request, $exception); } You can catch / handle any exception that is thrown in Laravel.

To fetch your logs, use the heroku logs command. $ heroku logs The logs command retrieves 100 log lines by default. You can specify the number of log lines to retrieve (up to a maximum of 1,500 lines) by using the --num (or -n) option. $ heroku logs -n 200 Real-time tail Similar to tail -f,...

Consider the following code: public async Task MethodA() { await MethodB(); // Do other work } public async Task MethodB() { await MethodC(); // Do other work } public async Task MethodC() { // Or await some other async work await Task.Delay(100); } ...

The following example shows how to apply custom fonts to a Navigation Bar and includes fixes for some quirky behaviors found in Xcode. One also may apply the custom fonts to any other UIControls such as UILabels, UIButtons, and more by using the attributes inspector after the custom font is added to...

The window.confirm() method displays a modal dialog with an optional message and two buttons, OK and Cancel. Now, let's take the following example: result = window.confirm(message); Here, message is the optional string to be displayed in the dialog and result is a boolean value indicating wheth...

from subprocess import check_call ok = check_call(['ffmpeg','-i','input.mp3','output.wav']) if ok: with open('output.wav', 'rb') as f: wav_file = f.read() note: http://superuser.com/questions/507386/why-would-i-choose-libav-over-ffmpeg-or-is-there-even-a-difference What are ...

Flask's built-in webserver is able to serve static assets, and this works fine for development. However, for production deployments that are using something like uWSGI or Gunicorn to serve the Flask application, the task of serving static files is one that is typically offloaded to the frontend webs...

double res[MAX]; int i; #pragma omp parallel { #pragma omp for for (i=0;i< MAX; i++) { res[i] = huge(); } } The for loop will be executed in parallel. huge() is some method which can take too long to get execute. OpenMP supports a shortcut to write the ab...

<p class="alert alert-success" *ngIf="names.length > 2">Currently there are more than 2 names!</p>

Let's say you want to show a text field (announcement) based on the time (a scheduled notification message for instance). You need two date-time fields. In our example, one is called start_date and the other end_date. <?php $DateNow = date('Y-m-d H:i:s'); $DateStart = get_field('start_date',...

To enable SSH create a file called ssh in the /boot directory of your SD card. Identify the drive letter associated with your SD card. Open a command prompt (press Win+R on your keyboard to open the Run window. Then, type cmd) Enter the following at the command prompt (replacing Drive...

This is a quick guide to get Robot Framework 3.0 working on a Windows machine using Python 2.7.11 - It does not go into too much depth on the why and how, it simply gets you up and running. First things are first, let't go and install Python! Download Python 2.7.11 for Windows. (Windows x86-64 ...

var logRepository = new Mock<ILogRepository>(); logRepository.Setup(x => x.Write(It.IsAny<Exception>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>())) .Verifiable(); In this case, we are using t...

import pyglet from pyglet.gl import * win = pyglet.window.Window() glClear(GL_COLOR_BUFFER_BIT) @win.event def on_draw(): glBegin(GL_POINTS) glVertex2f(x, y) #x is desired distance from left side of window, y is desired distance from bottom of window #make as many vertexes as...

In our last two examples, numpy assumed that a[0,:] was the first vector, a[1,:] the second, and a[2,:] the third. Numpy.cross has an optional argument axisa that allows us to specify which axis defines the vectors. So, >>> a=np.array([[1,1,1],[0,1,0],[1,0,-1]]) >>> b=np.array([0...