Tutorial by Examples: b

Custom Camera Control - Mouse-based Sliding

Here's an example of a custom camera controller. This reads the position of the mouse within the client window, and then slides the camera around as if it were following the mouse on the window. index.html <html> <head> <title>Three.js Custom Mouse Camera Control Ex...

three.js • Camera Controls in Three.js

Spinning Cube

var scene = new THREE.Scene(); var camera = new THREE.PerspectiveCamera( 75, window.innerWidth/window.innerHeight, 0.1, 1000 ); var renderer = new THREE.WebGLRenderer(); renderer.setSize( window.innerWidth, window.innerHeight ); document.body.appendChild( renderer.domElement ); var geo...

three.js • Render Loops for Animation: Dynamically updating objects

NSInvocation Objective-C

Refer to this original Post by e.James According to Apple's NSInvocation class reference: An NSInvocation is an Objective-C message rendered static, that is, it is an action turned into an object. And, in a little more detail: The concept of messages is central to the objective-c philosophy....

iOS • NSInvocation

Objective-C Example

First declare a property like this in the ViewController @property (nonatomic) UIRefreshControl *refreshControl; Later in the viewDidLoad() set up the refreshControl as given below: self.refreshControl = [[UIRefreshControl alloc]init]; [self.tableView addSubview:self.refreshControl]; [self.re...

iOS • UIRefreshControl TableView

Basic plugin which change color of text to green.

// plugin initialization $.fn.greenify = function() { // within the function you can use any of the jQuery methods // and `this` context refers to jQuery object this.css( "color", "green" ); }; // apply plugin $( "a" ).greenify();

jquery-plugins • Getting started with jquery-plugins

this with simple objects

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...

JavaScript • Context (this)

Saving this for use in nested functions / objects

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'; } }) }...

JavaScript • Context (this)

Binding function context

5.1 Every function has a bind method, which will create a wrapped function that will call it with the correct context. See here for more information. var monitor = { threshold: 5, check: function(value) { if (value > this.threshold) { this.display("Value is too high!&quot...

JavaScript • Context (this)

Delete blank lines in a file

You can delete all blank lines in a file with the following command: :g/^$/d This command is explained as follows: enter Command mode with : g is a global command that should occur on the entire file / start of the search pattern the search pattern of blank line is ^g /end of the search pat...

vim • Whitespace

Convert tabs to spaces and spaces to tabs

You can convert tabs to spaces by doing the following: First check that expandtab is switched off :set noexpandtab Then :retab! which replaces spaces of a certain length with tabs If you enable expandtab again :set expandtab then and run the :retab! command then all the tabs becomes spaces...

vim • Whitespace

Boolean literals

Boolean literals are the simplest of the literals in the Java programming language. The two possible boolean values are represented by the literals true and false. These are case-sensitive. For example: boolean flag = true; // using the 'true' literal flag = false; // using the 'fa...

Java Language • Literals

ConfigSlurper using string, number, boolean or list

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...

groovy • Use ConfigSluper (instead of property files)

Without creating Stub or Java files

public String getCitiesByCountry(String countryName) throws MalformedURLException, IOException { //Code to make a webservice HTTP request String responseString = ""; String outputString = ""; String wsURL = "http://www.webservicex.com/globalweather.asm...

soap • Consuming SOAP Web Service

Interaction Between Field Access and Update Method

Slightly counterintuitively (but also the only sane way to make it work), this: val dyn: Dynamic = ??? dyn.x(y) = z is equivalent to: dyn.selectDynamic("x").update(y, z) while dyn.x(y) is still dyn.applyDynamic("x")(y) It is important to be aware of this, or else...

Scala Language • Dynamic Invocation

Basic Error Reporting and Handling

Result<T, E> is an enum type which has two variants: Ok(T) indicating successful execution with meaningful result of type T, and Err(E) indicating occurrence of an unexpected error during execution, described by a value of type E. enum DateError { InvalidDay, InvalidMonth, } str...

Rust • Error handling

browser.sleep() vs browser.wait()

When it comes to dealing with timing issue, it is tempting and easy to put a "quick" browser.sleep(<timeout_in_milliseconds>) and move on. The problem is, it would some day fail. There is no golden/generic rule on what sleep timeout to set and, hence, at some point due to network or...

protractor • Explicit waits with browser.wait()

Build a complex string by concatenating multiple fields

The example builds a string from the name of the parent record, the name of this record, and the memo of this record. {createdfrom} || ' ' || {name} || ' ' || {memo}

netsuite • Exploiting formula columns in saved searches

Customize the CSS (stylesheet) for a column by inserting a DIV element

'<div style="font-size:11pt">' || expression || '</div>'

netsuite • Exploiting formula columns in saved searches

Defining an Setter/Getter in a Newly Created Object

JavaScript allows us to define getters and setters in the object literal syntax. Here's an example: var date = { year: '2017', month: '02', day: '27', get date() { // Get the date in YYYY-MM-DD format return `${this.year}-${this.month}-${this.day}` }, ...

JavaScript • Setters and Getters

Defining a Setter/Getter Using Object.defineProperty

var setValue; var obj = {}; Object.defineProperty(obj, "objProperty", { get: function(){ return "a value"; }, set: function(value){ setValue = value; } });

JavaScript • Setters and Getters