Tutorial by Examples: et

Write to socket a simple http get request, and dump response

/** * we reuse a class written in example: * http://stackoverflow.com/documentation/sockets/2876/introduction-to-sockets#t=201607262114505531351 * pleas to familiar with it first to continue with this one **/ public class WriteToSocketExample extends ConnectSocketExample { private ...

sockets • Getting started with sockets

Simple Scaladoc to method

/** * Explain briefly what method does here * @param x Explain briefly what should be x and how this affects the method. * @param y Explain briefly what should be y and how this affects the method. * @return Explain what is returned from execution. */ def method(x: Int, y: String): O...

Scala Language • Scaladoc

Subclassing SKScene to Implement Primary SpriteKit Functionality

SpriteKit functionality can be implemented in a subclass of SKScene. For example, a game may implement the main game functionality within an SKScene subclass called GameScene. In Swift: import SpriteKit class GameScene: SKScene { override func didMoveToView(view: SKView) { /* Co...

sprite-kit • SKScene

Create an SKScene that Fills the SKView

A simple use case it to create an SKScene that exactly fills the SKView. This avoids the need to consider scaling the view to fit or setting a camera to show a part of the scene. The following code assumes an SKView called skView already exists (e.g. as defined in Create a Full Screen SKView using ...

sprite-kit • SKScene

Create an SKScene that Scales to fit the SKView

An SKScene has a scaleMode parameter that defines how it will change its size to fit within the SKView it is presented into the SKView if it is not the same size and/or shape. There are four options for scaleMode: AspectFit: the scene is scaled (but not stretched) until it fits within the view. ...

sprite-kit • SKScene

Common functional methods in PHP

Mapping Applying a function to all elements of an array : array_map('strtoupper', $array); Be aware that this is the only method of the list where the callback comes first. Reducing (or folding) Reducing an array to a single value : $sum = array_reduce($numbers, function ($carry, $number) { ...

PHP • Functional Programming

Get some basic browser data and return it as a JSON object

The following function can be used to get some basic information about the current browser and return it in JSON format. function getBrowserInfo() { var json = "[{", /* The array containing the browser info */ info = [ navigator.userA...

JavaScript • Navigator Object

Bit Value Type

The BIT type is useful for storing bit-field values. BIT(M) allows storage of up to M-bit values where M is in the range of 1 to 64 You can also specify values with bit value notation. b'111' -> 7 b'10000000' -> 128 Sometimes it is handy to use 'shift' to construct a single-bit valu...

MySQL • Data Types

Creating a WebSocket communication

WebSocket provides a duplex/bidirectional communication protocol over a single TCP connection. the client opens a connection to a server that is listening for a WebSocket request a client connects to a server using a URI. A server may listen to requests from multiple clients. Server Endpoint...

java-ee • The WebSockets API

Installation or Setup

Detailed instructions on excel-formula(s). There are many formulas that you can choose from. They are divided up into 7 different categories and are on the FORMULAS tab in Excel. The categories are: Financial Logical Text Date & Time Lookup & Reference Math & trig More Function...

excel-formula • Getting started with excel-formula

Matching pairs (like parenthesis, brackets…)

Some regex engines (such as .NET) can handle context-free expressions, and will work it out. But that's not the case for most standard engines. And even if they do, you'll end up having a complex hard-to-read expression, whereas using a parsing library could make the job easier. How to find all p...

Regular Expressions • When you should NOT use Regular Expressions

External Stylesheet Use

Use the link attribute in the document's head: <head> <link rel="stylesheet" type="text/css" href="stylesheet.css"> </head> You can also use stylesheets provided from websites via a content delivery network, or CDN for short. (for example, Bo...

HTML • Using HTML with CSS

Internal Stylesheet

You can also include CSS elements internally by using the <style> tag: <head> <style type="text/css"> body { background-color: gray; } </style> </head> Multiple internal stylesheets can be included in a program as...

HTML • Using HTML with CSS

Multiple Stylesheets

It's possible to load multiple stylesheets: <head> <link rel="stylesheet" type="text/css" href="general.css"> <link rel="stylesheet" type="text/css" href="specific.css"> </head> Note that later files a...

HTML • Using HTML with CSS

Android Step 3: Node Server to Get Access Token & Process Payment

The complete sample code for this application (Android + Node server) is available in the PayPal Developer Github repository. From step 2, an async request has been made to our server at the /fpstore endpoint, passing along the auth code and metadata ID. We now need to exchange those for a token in...

PayPal • Mobile Future Payments (End to End App)

Creating Object and setting properties using reflection

Lets say we have a class Classy that has property Propertua public class Classy { public string Propertua {get; set;} } to set Propertua using reflection: var typeOfClassy = typeof (Classy); var classy = new Classy(); var prop = typeOfClassy.GetProperty("Propertua"); prop.Se...

.NET Framework • Reflection

Get all schemas, tables, columns and indexes

SELECT s.name AS [schema], t.object_id AS [table_object_id], t.name AS [table_name], c.column_id, c.name AS [column_name], i.name AS [index_name], i.type_desc AS [index_type] FROM sys.schemas AS s INNER JOIN sys.tables AS t ON s.schema_id = t.schema_id I...

Microsoft SQL Server • Retrieve information about the database

Retrieve Basic Server Information

SELECT @@VERSION Returns the version of MS SQL Server running on the instance. SELECT @@SERVERNAME Returns the name of the MS SQL Server instance. SELECT @@SERVICENAME Returns the name of the Windows service MS SQL Server is running as. SELECT serverproperty('ComputerNamePhysicalNetBIOS'...

Microsoft SQL Server • Getting started with Microsoft SQL Server

STORED PROCEDURE with OUT parameters

Stored procedures can return values using the OUTPUT keyword in its parameter list. Creating a stored procedure with a single out parameter CREATE PROCEDURE SprocWithOutParams ( @InParam VARCHAR(30), @OutParam VARCHAR(30) OUTPUT ) AS BEGIN SELECT @OutParam = @InParam + ' must co...

Microsoft SQL Server • Stored Procedures

Create table w/ identity column as primary key

-- Identity primary key - unique arbitrary increment number create table person ( id int identity(1,1) primary key not null, firstName varchar(100) not null, lastName varchar(100) not null, dob DateTime not null, ssn varchar(9) not null )

Microsoft SQL Server • Primary Keys