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In Pharo everything is an object, and every object responds to messages. So if you evaluate the following code Object subclass: #MyClass the object Object will create for you its subclass called MyClass. If you don't have any particular superclass in your mind it's advised to subclass from Objec...

From VBA array sort function? Public Sub QuickSort(vArray As Variant, inLow As Long, inHi As Long) Dim pivot As Variant Dim tmpSwap As Variant Dim tmpLow As Long Dim tmpHi As Long tmpLow = inLow tmpHi = inHi pivot = vArray((inLow + inHi) \ 2) While (tmpLow <=...

From anywhere in Vim, execute :help :help. This will open a horizontally split window with the manual page for the :help command. :help by itself will take you to the Table of Contents for the manual itself. Vim's help files are navigable like regular files (you can search for keywords within a fil...

var scene = new THREE.Scene(); var camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 50); camera.position.z = 25; var renderer = new THREE.WebGLRenderer(); renderer.setSize(window.innerWidth, window.innerHeight); document.body.appendChild(renderer.domElemen...

Queue follow FIFO as it is mentioned in the introduction. Five major operations: Enqueue(x): pushes x to the back of the queue. Dequeue(): pops an element from the front of the queue. isEmpty(): Finds whether the queue is empty or not. isFull(): Finds whether the queue is full or not. frontV...

Memory is efficiently organized in a circular queue as compared to linear queue. In Linear Queue: In Circular Queue: Remaining spaces can be used: Code for it to do the same: #include<stdio.h> #define MAX 10000 int front = -1; int rear = -1; int a[MAX]; bool isFull() { if...

Linked list representation is more efficient in terms of memory managerment. Code to show enqueue and deque in a Queue using Linklist in O(1) time. #include<stdio.h> #include<malloc.h> struct node{ int data; node* next; }; node* front = NULL; node* rear = NULL; vo...

Detailed instructions on getting gstreamer set up or installed.

A Vector3 structure can be created in several ways. Vector3 is a struct, and as such, will typically need to be instantiated before use. Constructors There are three built in constructors for instantiating a Vector3. ConstructorResultnew Vector3()Creates a Vector3 structure with co-ordinates of...

Setup ActiveMQ Download a ActiveMQ distribution from activemq.apache.org and unpack it somewhere You can start the server immediately, running unsecured on localhost, using the script bin/activemq When it is running, you can access your local server's console on http://localhost:8161/admin/ Co...

Android Apps are written in Java. The Android SDK tools compile the code, data and resource files into an APK (Android package). Generally, one APK file contains all the content of the app. Each app runs on its own virtual machine(VM) so that app can run isolated from other apps. Android system wor...

First of all you should know that you can extend Android.Application class so you can access two important methods related with app lifecycle: OnCreate - Called when the application is starting, before any other application objects have been created (like MainActivity). OnTerminate - This...

For example if the given tree is: Level order traversal will be 1 2 3 4 5 6 7 Printing node data level by level. Code: #include<iostream> #include<queue> #include<malloc.h> using namespace std; struct node{ int data; node *left; node *right; }; ...

Glass.Mapper.Sc allows you to move your data from Sitecore and into your code seamlessly using strongly typed objects. The framework allows you to map data on to c# classes and interfaces without any additional mark-up. As the data is mapped to your target objects it is converted to the target type...

Visual Basic for Applications (VBA) is the macro language behind all Microsoft Office products and is essentially identical across all Office products. What differs from product to product is the Object model. Excel has workbooks, worksheets and cells. Access has tables and attributes. Outlook h...

JdbcTemplate also provides convenient methods to execute batch operations. Batch Insert final ArrayList<Student> list = // Get list of students to insert.. String sql = "insert into student (id, f_name, l_name, age, address) VALUES (?, ?, ?, ?, ?)" jdbcTemplate.batchUpdate(sql, n...

CIDER function cider-eval-last-sexp can be used to execute the the code while editing the code inside the buffer. This function is by default binded to C-x C-e or C-x C-e. CIDER manual says C-x C-e or C-c C-e will: Evaluate the form preceding point and display the result in the echo area and/or ...

//MySingletonClass.h @interface MYSingletonClass : NSObject + (instancetype)sharedInstance; -(instancetype)init NS_UNAVAILABLE; -(instancetype)new NS_UNAVAILABLE; @end //MySingletonClass.m @implementation MySingletonClass + (instancetype)sharedInstance { static MySingleto...

The following would work in IE9+ import React from 'react' class App extends React.Component { constructor () { super() this.state = {someData: null} } componentDidMount () { var request = new XMLHttpRequest(); request.open('GET', '/my/url', true); request...

This example demonstrates how to install Tomcat as a service on Ubuntu using the *.tar.gz releases of both Tomcat as well as Java. 1. Install the Java Runtime Environment (JRE) Download the desired jre .tar.gz release Extract to /opt/ This will create a directory /opt/jre1.Xxxx/ Create a sym...