Tutorial by Examples: st

File Commands File.NewProject : CTRL + SHIFT + N Displays the New Project dialog box. File.OpenProject: CTRL + SHIFT + O Displays the Open Project dialog box, where existing projects can be added to the solution. Project.AddClass: SHIFT + ALT + C Displays the Add N...

Visual Studio Community 2017 Free, fully-featured IDE for students, open-source and individual developer Visual Studio Professional 2017 Professional developer tools, services, and subscription benefits for small teams Visual Studio Enterprise 2017 End-to-end solution to meet demand...

Detailed instructions on getting google-play set up or installed.

This example will be how to install from master and will be using @angular/cli as well. Make a new project with @angular/cli: ng new my-master-app If you haven't installed @angular/cli, use this command: npm install -g @angular/cli Install from master: npm install --save @angular/a...

Theme: A theme is required for material components to work properly within the application. Angular Material 2 provides four prebuilt themes: deeppurple-amber indigo-pink pink-bluegrey purple-green If you are using Angular CLI, you can import one of the prebuilt themes in style.css. @i...

If you have your data with each month of data arranged in rows like so: start by creating quarterly sums in the adjacent columns, D & E in our example. Start with the third row in the new column or the first quarter you want to create, in this example we'll use March 31st (2000-03-31). Use t...

Given a pipe that reverse a string import { Pipe, PipeTransform } from '@angular/core'; @Pipe({ name: 'reverse' }) export class ReversePipe implements PipeTransform { transform(value: string): string { return value.split('').reverse().join(''); } } It can be tested configuring th...

Templates are HTML files that may contain logic. You can specify a template in two ways: Passing template as a file path @Component({ templateUrl: 'hero.component.html', }) Passing a template as an inline code @Component({ template: `<div>My template here</div>`, }) Tem...

hero.component.html <form (ngSubmit)="submit($event)" [formGroup]="form" novalidate> <input type="text" formControlName="name" /> <button type="submit">Show hero name</button> </form> hero.component.ts import...

Components will render in their respective selector, so you can use that to nest components. If you have a component that shows a message: import { Component, Input } from '@angular/core'; @Component({ selector: 'app-required', template: `{{name}} is required.` }) export class RequiredC...

Given a directive that highlights text on mouse events import { Directive, ElementRef, HostListener, Input } from '@angular/core'; @Directive({ selector: '[appHighlight]' }) export class HighlightDirective { @Input('appHighlight') // tslint:disable-line no-input-rename highlightColor: str...

Modules can be nested by using the imports parameter of @NgModule decorator. We can create a core.module in our application that will contain generic things, like a ReservePipe (a pipe that reverse a string) and bundle those in this module: import { CommonModule } from '@angular/common'; import {...

Given a service that can login a user: import 'rxjs/add/operator/toPromise'; import { Http } from '@angular/http'; import { Injectable } from '@angular/core'; interface LoginCredentials { password: string; user: string; } @Injectable() export class AuthService { constructor(pri...

Here is how to create your own singleton class for toast messages, If your application need to show success, warning and the danger messages for different use cases you can use this class after you have modified it to your own specifications. public class ToastGenerate { private stati...

To send a file and form data in single request, content should have multipart/form-data type. using System; using System.Collections.Generic; using System.IO; using System.Net; using System.Threading.Tasks; public async Task<string> UploadFile(string url, string filename, Diction...

Static members have class scope as opposed to object scope C++ Example // define in header class Singleton { public: static Singleton *getInstance(); private: Singleton() {} static Singleton *instance; }; // initialize in .cpp Singleton* Singleton::instance = 0...

Defined within Another Class C++ Nested Class[ref] (needs a reference to enclosing class) class Outer { class Inner { public: Inner(Outer* o) :outer(o) {} private: Outer* outer; }; }; Java [non-static] Nested Class (aka Inner Class or Member Class...

Beware of using "downcasting" - Downcasting is casting down the inheritance hierarchy from a base class to a subclass (i.e. opposite of polymorphism). In general, use polymorphism & overriding instead of instanceof & downcasting. C++ Example // explicit type case required Child ...

Abstract Method declared without an implementation C++ pure virtual method virtual void eat(void) = 0; Java abstract method abstract void draw(); Abstract Class cannot be instantiated C++ cannot be instantiated; has at least 1 pure virtual method class AB {public: virtual void f() = ...