Tutorial by Examples: nd

You can use async methods to handle asynchronous executions. For example POST and GET requests. Let say below is your get data method. Task<List> GetDataFromServer(int type); You can call that method as shown below var result = await GetDataFromServer(1); However, in real day practic...

This example serves as a complement to other examples which talk about how to use the lifecycle methods and when the method will be called. This example summarize Which methods (componentWillMount, componentWillReceiveProps, etc) will be called and in which sequence will be different for a componen...

Add the following to Web.config (in Views folder), within <appSettings>: <add key="ClientValidationEnabled" value="true"/> <add key="UnobtrusiveJavaScriptEnabled" value="true"/> Add the jqueryval bundle to BundleConfig.cs: bundles.Add(n...

This attribute handles all unhandled exceptions in the code, (this is mostly for Ajax Requests - that deal with JSON - but can be extended) public class ExceptionHandlerAttribute : HandleErrorAttribute { /// <summary> /// Overriden method to handle exception /// </summary...

In this example code we will create A blank Opengl Window using LWJGL 3.0+, this doesn't contain steps to create the project in your IDE Create a class name WindowManager that will contain all the boiler plate code for creating a opengl context window on screen WindowManager.java impor...

The Constructor Dependency Injection requires parameters in the constructor to inject dependencies. So you have to pass the values when you create a new object. public class Example { private readonly ILogging _logging; public Example(ILogging logging) { this._logging = l...

public class Example { private FileLogging _logging; public Example() { this._logging = new FileLogging(); } }

show collections or show tables or db.getCollectionNames()

The following syntax allows you to specify dependencies in your module.js instead of explicit specification when using the service //lazy_module.js angular.module('lazy', [ 'alreadyLoadedDependency1', 'alreadyLoadedDependency2', ... [ 'path/to/lazily/loaded/dependency.js', 'path/to/l...

You need to import System.ComponentModel for using background worker Imports System.ComponentModel Then Declare a private variable Private bgWorker As New BackgroundWorker You need to create two methods for background worker's DoWork and RunWorkerCompleted events and assign them. Private Su...

It is possible to pass multiple bound values as a CommandParameter using MultiBinding with a very simple IMultiValueConverter: namespace MyProject.Converters { public class Converter_MultipleCommandParameters : MarkupExtension, IMultiValueConverter { public object Convert(object...

On error move to labelled code and see if there is a specific error that needs to be handled. Public Const cErrCodeNotNumber = 2262 ' This value must be a number. Public Const cErrCodeNumericOverflow = 2263 ' The number is too large. Private Sub MySub() Dim objConn As ADODB.Connection ...

There are three modes of XAML bindings exists for either Binding and x:Bind: OneTime: Update happens only once, on initialization of the view during InitializeComponent() call. (ViewModel[sends data when initializing] -> View) OneWay: View is updated when ViewModel changes. But not in the rev...

When calling methods directly from the view. If performance matters really bad (scientific spaceship stuff) When you want to get compile time errors

Use it if you want to be flexible about the source type of your data. It won't bind to an actual property but to its name. If you want to bind to the DataContext

List of commands that will be introduced here: ls #view contents of a directory touch #create new file mkdir #create new directory cp #copy contents of one file to another mv #move file from one location to another rm #delete a file or directory ls examples jennifer@my_co...

michael@who-cares:~$ The symbol ~ after the who-cares: is the current directory. ~ actually means the person's home directory. In this case, that's /home/michael. michael@who-cares:~$ cd Downloads michael@who-cares:~/Downloads$ Looks for Downloads in the current directory, then makes that th...

Open a command prompt with Administrator access Install Chocolatey: @powershell -NoProfile -ExecutionPolicy Bypass -Command "iex ((new-object net.webclient).DownloadString('https://chocolatey.org/install.ps1'))" && SET PATH=%PATH%;%ALLUSERSPROFILE%\chocolatey\bin Close the comm...

Encryption is used to transform data in its orignal format (Eg: The contents of a letter, Credentials part of authorizing a financial transaction) to something that cannot be easily reconstructed by anyone who is not intended to be part of the conversation. Basically encryption is used to preve...

To decouple and reuse the same error logging code for all your services you need two boilerplate classes and tuck them away in a library somewhere. ErrorhandlerAttribute implementing IServiceBehavior. FaultErrorhandler implementing IErrorhandler which logs all the exceptions. [AttributeUsage(Attr...