Tutorial by Examples: ga

We can use the Service Container as a Registry by binding an instance of an object in it and get it back when we'll need it: // Create an instance. $john = new User('John'); // Bind it to the service container. App::instance('the-user', $john); // ...somewhere and/or in another class... ...

We can bind a class as a Singleton: public function register() { App::singleton('my-database', function() { return new Database(); }); } This way, the first time an instance of 'my-database' will be requested to the service container, a new instance will be created. Al...

Solution 1: $('#parent').prepend($('#child')); Solution 2: $('#child').prependTo($('#parent')); Both solutions are prepending the element #child (adding at the beginning) to the element #parent. Before: <div id="parent"> <span>other content</span> </di...

Solution 1: $('#parent').append($('#child')); Solution 2: $('#child').appendTo($('#parent')); Both solutions are appending the element #child (adding at the end) to the element #parent. Before: <div id="parent"> <span>other content</span> </div> <d...

To cancel a call to requestAnimationFrame, you need the id it returned from when it was last called. This is the parameter you use for cancelAnimationFrame. The following example starts some hypothetical animation then pauses it after one second. // stores the id returned from each call to reques...

Addition + and subtraction - operations can be used to combine delegate instances. The delegate contains a list of the assigned delegates. using System; using System.Reflection; using System.Reflection.Emit; namespace DelegatesExample { class MainClass { private delegate void MyD...

You can easily add a breakpoint to your code by clicking on the grey column to the left of the line of your VBA code where you want execution to stop. A red dot appears in the column and the breakpoint code is also highlighted in red. You can add multiple breakpoints throughout your code and resumi...

While Value Converters can be comprised of either a toView or fromView method, in the below example we will be creating a basic Value Converter which just uses the toView method which accepts the value being sent to the view as the first argument. to-uppercase.js export class ToUppercaseValueConve...

A bi-directional value converter utilizes two methods in your Value Converter class: toView and fromView these methods are aptly named to signify which direction the data is flowing. In our example we will be creating a prepend Value Converter which will make sure that an amount entered in our app ...

Create project using STS (Spring Starter Project) or Spring Initializr (at https://start.spring.io ). Add a Web Dependency in your pom.xml: <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId&...

$scope.$emit Using $scope.$emit will fire an event name upwards through the scope hierarchy and notify to the $scope.The event life cycle starts at the scope on which $emit was called. Working wireframe : $scope.$broadcast Using $scope.$broadcast will fire an event down the $scope. We can list...

use lib 'includes'; use MySuperCoolModule; use lib 'includes'; adds the relative directory includes/ as another module search path in @INC. So assume that you have a module file MySyperCoolModule.pm inside includes/, which contains: package MySuperCoolModule; If you want, you can group as ma...

First define the service (in this case it uses the factory pattern): .factory('dataService', function() { var dataObject = {}; var service = { // define the getter method get data() { return dataObject; }, // define the setter method ...

Technically, autoloading works by executing a callback when a PHP class is required but not found. Such callbacks usually attempt to load these classes. Generally, autoloading can be understood as the attempt to load PHP files (especially PHP class files, where a PHP source file is dedicated for a ...

When the destructor for std::thread is invoked, a call to either join() or detach() must have been made. If a thread has not been joined or detached, then by default std::terminate will be called. Using RAII, this is generally simple enough to accomplish: class thread_joiner { public: thre...

The @var keyword can be used to describe the type and usage of: a class property a local or global variable a class or global constant class Example { /** @var string This is something that stays the same */ const UNCHANGING = "Untouchable"; /** @var string $some_s...

void doSomething(String... strings) { for (String s : strings) { System.out.println(s); } } The three periods after the final parameter's type indicate that the final argument may be passed as an array or as a sequence of arguments. Varargs can be used only in the final argume...

Returning partially applied functions is one technique to write concise code. add :: Int -> Int -> Int add x = (+x) add 5 2 In this example (+x) is a partially applied function. Notice that the second parameter to the add function does not need to be specified in the function definitio...

If a type wishes to have value semantics, and it needs to store objects that are dynamically allocated, then on copy operations, the type will need to allocate new copies of those objects. It must also do this for copy assignment. This kind of copying is called a "deep copy". It effective...

Sample Data: CREATE TABLE table_name ( id, list ) AS SELECT 1, 'a,b,c,d' FROM DUAL UNION ALL -- Multiple items in the list SELECT 2, 'e' FROM DUAL UNION ALL -- Single item in the list SELECT 3, NULL FROM DUAL UNION ALL -- NULL list SELECT 4, 'f,,g' FROM DUAL; -- NULL item...