Tutorial by Examples: i

Detailed instructions on getting networking set up or installed.

The typical Visitor example in Java would be: interface ShapeVisitor { void visit(Circle c); void visit(Rectangle r); } interface Shape { void accept(ShapeVisitor sv); } class Circle implements Shape { private Point center; private double radius; public Circl...

Objective-C NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:@"Hello. That is a test attributed string."]; [str addAttribute:NSBackgroundColorAttributeName value:[UIColor yellowColor] range:NSMakeRange(3,5)]; [str addAttribute:NSForegroundColorAttrib...

// Create the request. NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://google.com"]]; // Specify that it will be a POST request request.HTTPMethod = @"POST"; // This is how we set header fields [request setValue:@&...

// Create the request. NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://google.com"]]; // Specify that it will be a POST request request.HTTPMethod = @"POST"; // Setting a timeout request.timeoutInterval = 20.0; //...

Note I assume you know Webcomponent Specifications Polymer from Google What if, we could just have one custom element, say <tool-bar></tool-bar> and it magically did everything that messy Modal markup could? Tempting eh! How do you specify which Modal belongs to which project...

So far, we defined how easy it is to write a custom element that hides the messy html behind it and gives the user, an easy to write and brief markup. Time to code it! Our custom element, to display the bar below the hero image should Accept a Link to be shared Accept a Link to the Repo to be ...

<link rel="import" href="../bower_components/iron-icon/iron-icon.html"> <link rel="import" href="../bower_components/iron-icons/iron-icons.html"> <link rel="import" href="../bower_components/iron-icons/social-icons.html"&gt...

On whichever page you want to display your product / project portfolio, invoke the custom element like so: <article id="project-neighbourhood"> <div class="row"> <div class="col-12 hero"> <img src="path-to-hero-image...

In order to emphasize text the command \emph can be used which usually displays the text in an italics font: This is some text with \emph{emphasized words}.

The command \sout of the package ulem strikes through a text: \sout{This text is striked through} The package ulem redefines the command \emph. When you do not want to have this behavior you can use the package ulem with the option normalem: \usepackage[normalem]{ulem}

Empty string Empty string is not null but has zero length: string emptyString = ""; // an empty string is not null... assert(emptyString !is null); // ... but it has zero lenght assert(emptyString.length == 0); Null string string nullString = null; a null string is null (De ...

Catching exceptions in Kotlin looks very similar to Java try { doSomething() } catch(e: MyException) { handle(e) } finally { cleanup() } You can also catch multiple exceptions try { doSomething() } catch(e: FileSystemException) { handle(e) } catch(e: Network...

IF you are using simple categories, with each physics body belonging to only one category, then this alternative form of didBeginContact may be more readable: func didBeginContact(contact: SKPhysicsContact) { let contactMask = contact.bodyA.categoryBitMask | contact.bodyB.categoryBitMask ...

Here is a simple Sprite-Kit GameScene.swift. Create a new, empty SpriteKit project and replace the GameScene.swift with this. Then build and run. Click on any of the objects on screen to give make them move. Check the logs and the comments to see which ones collide and which ones make contact. // ...

Depth-first search is an algorithm for traversing or searching tree or graph data structures. One starts at the root and explores as far as possible along each branch before backtracking. A version of depth-first search was investigated in the 19th century French mathematician Charles Pierre Trémaux...

If the tables use InnoDB, MySQL automatically uses row level locking so that multiple transactions can use same table simultaneously for read and write, without making each other wait. If two transactions trying to modify the same row and both uses row level locking, one of the transactions waits f...

Dictionaries are great for managing information where multiple entries occur, but you are only concerned with a single value for each set of entries — the first or last value, the mininmum or maximum value, an average, a sum etc. Consider a workbook that holds a log of user activity, with a script ...

Bubble sort is also known as Sinking Sort. It is a simple sorting algorithm that repeatedly steps through the list to be sorted, compares each pair of adjacent items and swaps them if they are in the wrong order. Bubble sort example Implementation of Bubble Sort I used C# language to implement ...

1. Overview In this article we are going to discuss how to get started with Enterprise JavaBeans (EJB). We will use JBoss AS 7.1.1.Final, but you are free to use any server of your choice. 2. Maven Dependencies for Bean In order to use EJB make sure you add the latest version of it to the depende...