Tutorial by Examples: me

class MyClass { function my_init_method() { // do something here } } $obj = new MyClass(); add_action( 'init', array( $obj, 'my_init_method' ) ); Using a method of an object to hook a set of instructions. With the init hook, the set of instructions will be executed right...

When the command-line syntax for an application is simple, it is reasonable to do the command argument processing entirely in custom code. In this example, we will present a series of simple case studies. In each case, the code will produce error messages if the arguments are unacceptable, and the...

An element containing a single child, with some framing options. Frame have a default Xamarin.Forms.Layout.Padding of 20. XAML <Frame> <Label Text="I've been framed!" HorizontalOptions="Center" VerticalOptions="Center" /> </Frame> Code var ...

Font Awesome is an extremely simple yet powerful library to use, with 634 icons available in just a few words. How does it work? Font Awesome uses Unicode characters stored in a ../fonts directory to change any i.fa elements to the respective unicode character, as such displaying the icon as text....

Rewrite Class File: Namespace/ModuleName/etc/di.xml <?xml version="1.0"?> <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd"> <preference for="Ma...

SQLite already has extensive documentation, which should not be duplicated here.

To view the first or last few records of a dataframe, you can use the methods head and tail To return the first n rows use DataFrame.head([n]) df.head(n) To return the last n rows use DataFrame.tail([n]) df.tail(n) Without the argument n, these functions return 5 rows. Note that the slice ...

Creating a self-closing shortcode with parameters <?php function button_shortcode( $type ) { extract( shortcode_atts( array( 'type' => 'value' ), $type ) ); // check what type user entered switch ($type) { case 'twitter': ...

The XML document, I will be using throughout the examples is - <a> <b>test-value</b> <d>fragment-d</d> <c-root> <d>fragment-d</d> <e>fragment-e</e> </c-root> </a> The following queries ...

xdmp:estimate(cts:search(fn:doc(), cts:element-value-query(xs:QName("d"), "fragment-d"))) xdmp:estimate can not be used on XPaths unlike fn:count is used in previous example xdmp:estimate actually gives the number of matching fragments

The XML document to consider in this example - <a> <b>test-value</b> <d>fragment-d</d> <c-root> <d>fragment-d</d> <e>fragment-e</e> </c-root> </a> A fragment root is declared on <c-r...

To start with App Development we need Visual studio 2013 or higher version. Download latest community or expression edition from here > https://www.visualstudio.com/products/free-developer-offers-vs Once it has been downloaded and installed Open and Click create new project expand Office...

void DispatchToMainThread(std::function<void()> callback) { // any thread QTimer* timer = new QTimer(); timer->moveToThread(qApp->thread()); timer->setSingleShot(true); QObject::connect(timer, &QTimer::timeout, [=]() { // main thread ...

def count = 0 nonmemoized = { long n -> println "nonmemoized: $n"; count++ } nonmemoized(1) nonmemoized(2) nonmemoized(2) nonmemoized(1) assert count == 4 def mcount = 0 memoized = { long n -> println "memoized: $n"; mcount++ }.memoize() memoized(1) me...

Create a new controller foreg ControllerName: "Home", ActionresultName :"Index" open AreaRegistraion.cs and add the controller name and action name to be rerouted to context.MapRoute( "nameofarea_default", "nameofarea/{controller}/...

In the following examples, json contains a JSON object with the following data: [ { "name": "John Doe", "work": { "company": { "name": "ASDF INC", "country": "USA" }, ...

Large scale applications often need different properties when running on different environments. we can achieve this by passing arguments to NodeJs application and using same argument in node process to load specific environment property file. Suppose we have two property files for different enviro...

Set custom user agent and navigate to Uri: var userAgent = "my custom user agent"; var uri = new Uri("http://useragentstring.com/"); var requestMessage = new HttpRequestMessage(HttpMethod.Get, uri); requestMessage.Headers.Add("User-Agent", userAgent); this.webVie...

By default, the full indexed document is returned as part of all searches. This is referred to as the source (_source field in the search hits). If we don’t want the entire source document returned, we have the ability to request only a few fields from within source to be returned, or we can set _so...

Such Example is knowing wide spreading among PWAs (Progressive Web Applications) and in this example we're going to send a simple Backend like notification using NodeJS and ES6 Install Node-GCM Module : npm install node-gcm Install Socket.io : npm install socket.io Create a GCM Enable...