Tutorial by Examples: d

The model is the first "M" in MVVM. The model is usually a class containing the data that you want to expose via some kind of user interface. Here is a very simple model class exposing a couple of properties:- public class Customer : INotifyPropertyChanged { private string _forenam...

If you are familiar with jQuery and Sizzle syntax, d3 selections should not be much different. d3 mimics the W3C Selectors API to make interacting with elements easier. For a basic example, to select all <p> and add a change to each of them: d3.selectAll('p') .attr('class','textClass') ...

The lubridate package provides convenient functions to format date and datetime objects from character strings. The functions are permutations of LetterElement to parseBase R equivalentyyear%y, %Ym (with y and d)month%m, %b, %h, %Bdday%d, %ehhour%H, %I%pm (with h and s)minute%Msseconds%S e.g. ymd(...

This will show the user type and permission path (which windows group the user is getting its permissions from). xp_logininfo 'DOMAIN\user'

You can alternatively use an Object Declaration that contains the main function for a Kotlin program. package my.program object App { @JvmStatic fun main(args: Array<String>) { println("Hello World") } } The class name that you will run is the name of you...

Similar to using an Object Declaration, you can define the main function of a Kotlin program using a Companion Object of a class. package my.program class App { companion object { @JvmStatic fun main(args: Array<String>) { println("Hello World") ...

TYPO3 Extbase extension development method came along with the release of TYPO3 4.3.0 in November 2009. Extbase is a PHP-based framework which supports developers in creating clean and easily maintainable TYPO3 extensions.The first real presentation of Extbase happened in April 2009 on the american ...

Haskell supports a notion of class extension. For example, the class Ord inherits all of the operations in Eq, but in addition has a compare function that returns an Ordering between values. Ord may also contain the common order comparison operators, as well as a min method and a max method. The =&...

From ES5.1 onwards, you can use the native method Array.prototype.filter to loop through an array and leave only entries that pass a given callback function. In the following example, our callback checks if the given value occurs in the array. If it does, it is a duplicate and will not be copied to...

C++11 In the header file: // widget.h #include <memory> // std::unique_ptr #include <experimental/propagate_const> class Widget { public: Widget(); ~Widget(); void DoSomething(); private: // the pImpl idiom is named after the typ...

$this->helper('customer/data')->getForgotPasswordUrl(); OR Mage::helper('customer/data')->getForgotPasswordUrl();

Writes to the trace listeners in the Listeners collection when the application is compiled in debug configuration. public static void Main(string[] args) { Debug.WriteLine("Hello"); } In Visual Studio or Xamarin Studio this will appear in the Application Output window. This is d...

You can redirect the debug output to a text file by adding a TextWriterTraceListener to the Debug.Listeners collection. public static void Main(string[] args) { TextWriterTraceListener myWriter = new TextWriterTraceListener(@"debug.txt"); Debug.Listeners.Add(myWriter); Deb...

return : http://www.example.com/my-product.html

Mage::getSingleton('admin/session')->getUser();

Sometimes, it's not possible to list the number of parameters a function could need. Consider a sum function: func sum(_ a: Int, _ b: Int) -> Int { return a + b } This works fine for finding the sum of two numbers, but for finding the sum of three we'd have to write another function: f...

If you want to display to your users meaningful errors instead of simple "sorry, something went wrong", Rails has a nice utility for the purpose. Open the file app/controllers/application_controller.rb and you should find something like this: class ApplicationController < ActionContro...

/** * Parameters * * @param int $int * @param string $string * @param array $array * @param bool $bool */ function demo_param($int, $string, $array, $bool) { } /** * Parameters - Optional / Defaults * * @param int $int * @param string $string * @param ...

If you ever wanted to determine the html content to be printed on a page during run time then, rails has a very good solution for that. It has something called the content_for which allows us to pass a block to a rails view. Please check the below example, Declare content_for <div> <%=...

You can run tasks in series, by passing a second parameter to gulp.task(). This parameters is an array of tasks to be executed and completed before your task will run: var gulp = require('gulp'); gulp.task('one', function() { // compile sass css }); gulp.task('two', function() { // ...