Tutorial by Examples: is

Main layout : activity_main.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/activity_main" android:layout_width="match_parent" android:layo...

Create a sample table on a sample database CREATE TABLE [dbo].[Table_1]( [Id] [int] IDENTITY(1,1) NOT NULL, [title] [varchar](50) NULL, CONSTRAINT [PK_Table_1] PRIMARY KEY CLUSTERED ( [Id] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_...

① the concepts used in this Example : ClassUsageURLRequest + Loader + EventLoading atlas map (sprite) from external path.BitmapData + Sprite + beginBitmapFill +Matrix + stageWidth & stageHeightdrawing loaded resources to bitmapdata, using tiled bitmaps, drawing with transformation.MovieClip + s...

Show or hide invisible characters To show invisible characters: :set list To hide invisible characters: :set nolist To toggle between showing and hiding invisible characters: :set list! Default symbol characters SymbolCharacter^ITab$New Line Customize symbols To set the tab characte...

Go to the repository you want to clone (something like: https://bitbucket.org/username/repo) On the top menu, choose Repository -> Import repository In the Old repository section, enter the source (CodePlex, Git, Google Code, Mercurial, Source Code, Subversion) and the URL In the New reposi...

iOS 10 Now Requires User Permission to Access Media Library, Photos, Camera and other Hardware like these. The solution for this is to add their keys into info.plist with description for user that how we are using their data , iOS already required permissions to access microphone, camera, and m...

SELECT item.item_id, item.name, /* not SQL-92 */ COUNT(*) number_of_uses FROM item JOIN uses ON item.item_id, uses.item_id GROUP BY item.item_id will show the rows in a table called item, and show the count of related rows in a table called uses. This works well, but unfo...

SELECT item.item_id, uses.category, /* nonstandard */ COUNT(*) number_of_uses FROM item JOIN uses ON item.item_id, uses.item_id GROUP BY item.item_id will show the rows in a table called item, and show the count of related rows in a table called uses. It will also show the va...

Sometimes a query looks like this, with a * in the SELECT clause. SELECT item.*, /* nonstandard */ COUNT(*) number_of_uses FROM item JOIN uses ON item.item_id, uses.item_id GROUP BY item.item_id Such a query needs to be refactored to comply with the ONLY_FULL_GROUP_BY sta...

To display current version, we can use VERSION from @angular/core package. import { Component, VERSION } from '@angular/core'; @Component({ selector: 'my-app', template: `<h1>Hello {{name}}</h1> <h2>Current Version: {{ver}}</h2> `, }) export class AppCompone...

A common usecase is to discard certain rest-calls, that are not needed any more after certain user-inputs. The most prominent example would be, when a user uses some search-function, makes a request, makes another request and for some reason the first request arrives after the second request and the...

What is Concurrency? Doing multiple things at the same time. Taking advantage of number of cores available in multicore CPUs. Running multiple programs in parallel. Objectives of Concurrency Running program in background without hogging CPU. Define Tasks, Define Rules and let...

var person = { name: 'John Doe', age: 42, gender: 'male', bio: function() { console.log('My name is ' + this.name); } }; person.bio(); // logs "My name is John Doe" var bio = person.bio; bio(); // logs "My name is undefined" In the above code, person.bi...

One common pitfall is to try and use this in a nested function or an object, where the context has been lost. document.getElementById('myAJAXButton').onclick = function(){ makeAJAXRequest(function(result){ if (result) { // success this.className = 'success'; } }) }...

When using a function as a constructor, it has a special this binding, which refers to the newly created object: function Cat(name) { this.name = name; this.sound = "Meow"; } var cat = new Cat("Tom"); // is a Cat object cat.sound; // Returns "Meow" var ca...

In the file myConfig.groovy is the following content. message = 'Hello World!' aNumber=42 aBoolean=false aList=["apples", "grapes", "oranges"] Then in your main script you create a ConfigSlurper for your myConfig.groovy file which is really just another groovy sc...

Define a new visitor class by overriding some of the methods of ExpressionVisitor: class PrintingVisitor : ExpressionVisitor { protected override Expression VisitConstant(ConstantExpression node) { Console.WriteLine("Constant: {0}", node); return base.VisitConstant(...

For iterating more than two lists simultaneously within list comprehension, one may use zip() as: >>> list_1 = [1, 2, 3 , 4] >>> list_2 = ['a', 'b', 'c', 'd'] >>> list_3 = ['6', '7', '8', '9'] # Two lists >>> [(i, j) for i, j in zip(list_1, list_2)] [(1, '...

Access specifications for subversion repositories is specified etc/subversion/svn_access_control file Create/edit the file using following command nano /etc/subversion/svn_access_control Use following syntax to configure access permissions for repositories to group/members [Repository:<Path&g...

Requirement for Local development 1) MySQL server(I am Using XAMPP for MySQL server) 2) For Test API You can use Postman(optional) 3) Before run application,make sure MySQL server is running, properly prepare your application.properties file(DB_Name, Username,Password). 1.Add following depen...