Tutorial by Examples: r

One common use of variable-length argument lists is to implement functions that are a thin wrapper around the printf() family of functions. One such example is a set of error reporting functions. errmsg.h #ifndef ERRMSG_H_INCLUDED #define ERRMSG_H_INCLUDED #include <stdarg.h> #include...

using System; using System.IO; using System.IO.Compression; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { string zipPath = @"c:\example\start.zip"; string extractPath = @"c:\example\extract...

We can register our own primitives (i.e., register an element) using AFRAME.registerPrimitive(name, definition). definition is a JavaScript object defining these properties: PropertyDescriptiondefaultComponentsObject specifying default components of the primitive. The keys are the components' nam...

Using a format string provides information about the expected number and type of the subsequent variadic arguments in such a way as to avoid the need for an explicit count argument or a terminator value. The example below shows a a function that wraps the standard printf() function, only allowing f...

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <p> <input id="cbGroup1" type="checkbox">Select all <input name="cbGroup1" type="checkbox" value="value1_1">Group1 v...

You must use a ScriptManager control on a page to enable the following features of ASP.NET AJAX: 1. Client-script functionality of the Microsoft AJAX Library, and any custom script that you want to send to the browser. protected void Button1_Click(object sender, EventArgs e) { Page.ClientScr...

Directional lights are like a light source that is infinitely far away, but shining from a specific direction, like the sun. Thus, absolute position do not have an effect on the intensity of the light on an entity. We can specify the direction using the position component. The example below creates...

Hemisphere lights are like an ambient light, but with two different colors, one from above (color) and one from below (groundColor). This can be useful for scenes with two distinct lighting colors (e.g., a grassy field under a gray sky). <a-entity light="type: hemisphere; color: #33C; groun...

In a pipeline series each function runs parallel to the others, like parallel threads. The first processed object is transmitted to the next pipeline and the next processing is immediately executed in another thread. This explains the high speed gain compared to the standard ForEach @( bigFile_1, b...

This example shows how to create a custom dragging behavior by Subclassing UIDynamicBehavior and subclassing UICollectionViewFlowLayout. In the example, we have UICollectionView that allows for the selection of multiple items. Then with a long press gesture those items can be dragged in an elastic, ...

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If your application does not need any HTTP interface (for example for a console only app), you will want to disable at least Twig and SensioFrameworkExtra Just comment out those lines: app/AppKernel.php $bundles = [ //... // new Symfony\Bundle\TwigBundle\TwigBundle(), // new Sensio\Bundl...

Command git cherry shows the changes which haven't yet been cherry-picked. Example: git checkout master git cherry development ... and see output a bit like this: + 492508acab7b454eee8b805f8ba906056eede0ff - 5ceb5a9077ddb9e78b1e8f24bfc70e674c627949 + b4459544c000f4d51d1ec23f279d9cdb19c1d32b...

Forward messages one object to another by delegates, multicasting these messages to multiple observers.. Step 1:- Create NSObject class of RRMulticastDelegate Step 2:- Following code implement in RRMulticastDelegate.h file #import <Foundation/Foundation.h> @interface RRMulticastDelegate ...

If for some reason using the Symfony Installer is not an option, you can also create a new project using Composer. First of all, make sure you have installed Composer. Next, you can use the create-project command to create a new project: composer create-project symfony/framework-standard-edition m...

Drupal itself provide good caching options to increase the page speed and serve pages fast to end users. Caches are used to improve the performance of your Drupal site. But it also has a drawback that sometimes it could lead the "stale" data. This means, sometimes, the system may start to ...

List of available mixins: ListModelMixin: provides a .list() method to the view/viewset RetrieveModelMixin: provides a .retrieve() method to the view/viewset CreateModelMixin: provides a .create() method to the view/viewset UpdateModelMixin: provides a .update() method to the view/viewset D...

After creating a new Symfony application, you can use the server:run command to start a simple PHP web server, so you can access your new application from your web browser: cd my_project_name/ php bin/console server:run You can now visit http://localhost:8000/ to see the Symfony welcome page. ...

When a window contains many widgets, they might not all be visible. However, neither a window (Tk or Toplevel instance) nor a Frame are scrollable. One solution to make the window content scrollable is to put all the widgets in a Frame, and then, embed this Frame in a Canvas using the create_window ...

Using YAML: # app/config/routing.yml blog_list: path: /blog defaults: { _controller: AppBundle:Blog:list } Using Annotations: // src/AppBundle/Controller/BlogController.php namespace AppBundle\Controller; use Symfony\Bundle\FrameworkBundle\Controller\Controller; use Sensio\B...