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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...

Using YAML: # app/config/routing.yml blog_show: path: /blog/{slug} defaults: { _controller: AppBundle:Blog:show } Using Annotations: // src/AppBundle/Controller/BlogController.php namespace AppBundle\Controller; use Symfony\Bundle\FrameworkBundle\Controller\Controller; use S...

If you want to have a placeholder that may be omitted, you can give it a default value: Using YAML: # app/config/routing.yml blog_list: path: /blog/{page} defaults: { _controller: AppBundle:Blog:list, page: 1 } requirements: page: '\d+' Using Annotations: // src/...

Sometimes you want to return a 404 (Not Found) response, because the requested resource does not exist. Symfony allows you to do so by throwing a NotFoundHttpException. The Symfony base Controller exposes a createNotFoundException method which creates the exception for you: public function indexAc...

If you need to access the Request object (for instance to read the query parameters, to read an HTTP header or to process an uploaded file), you can receive the request as a method argument by adding a type-hinted argument: use Symfony\Component\HttpFoundation\Request; public function indexActio...

Whenever we create a new project in Xcode for our new app, it gives us various in-built classes, targets, tests, plist file, etc. Similarly it also gives us as Assets.xcassets file, which manages all the image assets in our project. This is how this file looks like in file navigator: If we clic...

It's really easy to define the functions. Function GetAreaOfARectangle(ByVal Edge1 As Integer, ByVal Edge2 As Integer) As Integer Return Edge1 * Edge2 End Function Dim Area As Integer = GetAreaOfARectangle(5, 8) Console.Writeline(Area) 'Output: 40

Function Age(ByVal YourAge As Integer) As String Select Case YourAge Case Is < 18 Return("You are younger than 18! You are teen!") Case 18 to 64 Return("You are older than 18 but younger than 65! You are adult!") Cas...

Circle.yml machine: python: # Python version to use - Selenium requires python 3.0 and above version: pypy-3.6.0 dependencies: pre: # Install pip packages - pip install selenium - pip install unittest test: override: # Bash command to run main....

You can use UILocalNotification, old APIs also works fine with iOS10, but we had better use the APIs in the User Notifications framework instead. There are also some new features, you can only use with iOS10 User Notifications framework. This also happens to Remote Notification, for more informatio...

In this XML file, we are specifying the servlet class DispatcherServlet that acts as the front controller in Spring Web MVC. All the incoming request for the HTML file will be forwarded to the DispatcherServlet. <?xml version="1.0" encoding="UTF-8"?> <web-app version...

Imagine that you need sort records by lowest value of either one of two columns. Some databases could use a non-aggregated MIN() or LEAST() function for this (... ORDER BY MIN(Date1, Date2)), but in standard SQL, you have to use a CASE expression. The CASE expression in the query below looks at th...

AxWindowsMediaPlayer1.URL = "C:\My Files\Movies\Avatar.mp4" AxWindowsMediaPlayer1.Ctlcontrols.play() This code will play Avatar in the axWindowsMediaPlayer.

Lets say we want to build a paginated list of products, where the number of the page is passed as a query string parameter. For instance, to fetch the 3rd page, you'd go to: http://example.com/products?page=3 The raw HTTP request would look something like this: GET /products?page=3 HTTP/1.1 Ho...