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Check if browser supports vibrations if ('vibrate' in window.navigator) // browser has support for vibrations else // no support

An array of values describes periods of time in which the device is vibrating and not vibrating. window.navigator.vibrate([200, 100, 200]);

The official website contain good exemple of apps: https://www.opencpu.org/apps.html The following code is used to serve a R session: library(opencpu) opencpu$start(port = 5936) After this code is executed, you can use URLs to access the functions of the R session. The result could be XML, h...

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.

Heroku aggregates three categories of logs for your app: App logs - Output from your application. This will include logs generated from within your application, application server and libraries. (Filter: --source app) System logs - Messages about actions taken by the Heroku platform infras...

Lets have a look at the native app lifecycle methods for different platforms. Android. //Xamarin.Forms.Platform.Android.FormsApplicationActivity lifecycle methods: protected override void OnCreate(Bundle savedInstanceState); protected override void OnDestroy(); protected override void OnPause()...

<?xml version="1.0" encoding="UTF-8"?> 4.0.0 <groupId>Project name</groupId> <artifactId>MulitClients</artifactId> <version>1.0-SNAPSHOT</version> <dependencies> <dependency> <groupId>junit<...

Here is a simple proof by induction. Require Import Coq.Setoids.Setoid. Require Import Coq.Arith.Lt. (* A number is less than or equal to itself *) Theorem aLTEa : forall a, a <= a. auto with arith. (* This follows by simple arithmetic *) Qed. Theorem simplALTE : forall a ...

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); } ...

It parses the data from the %%GLOBAL_ConversionCode%% template variable, and as such this script should be inserted in order.html immediately after the %%GLOBAL_ConversionCode%% variable. This was originally intended for the Blueprint theme framework and, as such, may not work on Stencil. <scrip...

This was added to assets/js/theme/category.js in loaded(). You will also need to add {{inject "categoryProducts" category.products}} to templates/pages/category.html var mainImages = []; var rollOvers = []; this.context.categoryProducts.forEach(function(e, i) { if (e.images[0])...

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...

In Coq, destruct more or less corresponds to a case analysis. It is similar to induction except that there's no induction hypothesis. Here is a (admittedly rather trivial) example of this tactic: Require Import Coq.Arith.Lt. Theorem atLeastZero : forall a, 0 <= a. Proof. intros. destr...

By default, floating point operations on float and double do not strictly adhere to the rules of the IEEE 754 specification. An expression is allowed to use implementation-specific extensions to the range of these values; essentially allowing them to be more accurate than required. strictfp disable...

The Hello Audio! of Java that plays a sound file from local or internet storage looks as follows. It works for uncompressed .wav files and should not be used for playing mp3 or compressed files. import java.io.*; import java.net.URL; import javax.sound.sampled.*; public class SoundClipTest { ...

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...

# from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer # python2 from http.server import BaseHTTPRequestHandler, HTTPServer # python3 class HandleRequests(BaseHTTPRequestHandler): def _set_headers(self): self.send_response(200) self.send_header('Content-type', 'text...