Tutorial by Examples: u

Ada is a programming language for which there exists multiple compilers. One of these compilers, and perhaps the most used, is GNAT. It is part of the GCC toolchain. It can be installed from several sources: The yearly GPL release done by AdaCore, available for free on libre site. This ver...

Note: This example is based on the Oracle JVM implementation. Built-in tools like jmap, jconsole, and jvisualvm are available in a JDK and can be used to generate and analyze heap memory dumps taken from a running JVM application. However, one option to generate a heap dump without using JDK tools ...

<?xml version="1.0" encoding="UTF-8"?> <Configuration> <Appenders> <Console name="STDOUT" target="SYSTEM_OUT"> <PatternLayout pattern="%d %-5p [%t] %C{2} %m%n"/> </Console> </Appenders&gt...

A method can take an array parameter and destructure it immediately into named local variables. Found on Mathias Meyer's blog. def feed( amount, (animal, food) ) p "#{amount} #{animal}s chew some #{food}" end feed 3, [ 'rabbit', 'grass' ] # => "3 rabbits chew some gra...

Step 1: Create a new Rails app gem install rails -v 4.1 rails new angular_example Step 2: Remove Turbolinks Removing turbolinks requires removing it from the Gemfile. gem 'turbolinks' Remove the require from app/assets/javascripts/application.js: //= require turbolinks Step 3: Add Angu...

Window functions are used to do operations(generally aggregation) on a set of rows collectively called as window. Window functions work in Spark 1.4 or later. Window functions provides more operations then the built-in functions or UDFs, such as substr or round (extensively used before Spark 1.4). W...

By default the Custom Tool property for a VB resource file is VbMyResourcesResXFileCodeGenerator. However, with this code generator the view (XAML) will not be able to access the resources. To solve this problem add Public before the Custom Tool property value. To select the Resources.resx file in ...

Open the resource file by double clicking it. Change the Access Modifier to "Public".

Bean1 @ManagedBean @ViewScoped public class Bean1 implements Serializable { /** * Just takes the given param, sets it into flash context and redirects to * page2 * * @param inputValue * @return */ public String goPage2(String inputValue) { ...

Sometimes you might accidentally run something in the shell that ends up waiting forever, and thus blocking the shell: iex(2)> receive do _ -> :stuck end In that case, press Ctrl-g. You'll see: User switch command Enter these commands in order: k (to kill the shell process) s (to st...

Computed observables are functions that can "watch" or "react" to other observables on the view model. The following example shows how you would display the total number of users and the average age. Note: The example below can also make use of pureComputed() (introduced in v3....

Erlang is a functional programming language. One of the features in a function programming language is handling functions as data (functional objects). Pass a function as an argument to another function. Return function as a result of a function. Hold functions in some data structure. In Erl...

In order to add Firebase Crash Reporting to your app, perform the following steps: Create an app on the Firebase Console here. Copy the google-services.json file from your project into your in app/ directory. Add the following rules to your root-level build.gradle file in order to inc...

The Enumerable.Sum extension method calculates the sum of numeric values. In case the collection's elements are themselves numbers, you can calculate the sum directly. int[] numbers = new int[] { 1, 4, 6 }; Console.WriteLine( numbers.Sum() ); //outputs 11 In case the type of the elements is a ...

You can return an anonymous object from your function public static object FunctionWithUnknowReturnValues () { /// anonymous object return new { a = 1, b = 2 }; } And assign the result to a dynamic object and read the values in it. /// dynamic object dynamic x = FunctionWithUnknowR...

You can return an instance of Tuple class from your function with two template parameters as Tuple<string, MyClass>: public Tuple<string, MyClass> FunctionWith2ReturnValues () { return Tuple.Create("abc", new MyClass()); } And read the values like below: Console.Wri...

You might want to use it when parsing DateTimes from different cultures (languages), following example parses Dutch date. DateTime dateResult; var dutchDateString = "31 oktober 1999 04:20"; var dutchCulture = CultureInfo.CreateSpecificCulture("nl-NL"); DateTime.TryParse(dutch...

The format of the struct statement is this: struct [structure tag] { member definition; member definition; ... member definition; } [one or more structure variables]; Example: declare the ThreeFloats structure: typedef struct { float x, y, z; } ThreeFloats; @inter...

The pause() method is one of the easiest solution Protractor provides you to debug the code, in order to use it you have to add it in your code where you want to pause the execution.Once the execution is in paused state: You can use C (type C) to move forward. Be careful while using it, you hav...

' Initialize the object Dim myCar Set myCar = new Car ' Setting a property myCar.Wheels = 4 ' Getting a property value wscript.echo myCar.Wheels ' Using a subroutine in a class myCar.Drive 10 myCar.Drive 12 ' Using a function in a class wscript.echo myCar.GetTotalDistance() ' r...