Tutorial by Examples: a

Tracked controls

A-Frame 0.x0.3 The tracked-controls component is A-Frame’s base controller component that provides the foundation for all of A-Frame’s controller components. The tracked-controls component: Grabs a Gamepad object from the Gamepad API given an ID or prefix. Applies pose (position and orien...

aframe • Controls (component)

Array : A Simple Data Structure

An Array Data Structure is used to store similar objects (or data values) in a contiguous block of memory. Array Data Structure has fixed size, which determines the number of data values that can be stored in it. Array : The C++ Way In C++ Programming Language, we can declare a static arr...

data-structures • Getting started with data-structures

Using Eval

For example, consider the following that sets the contents of $@ to the contents of a given variable: a=(1 2 3) eval set -- "${a[@]}" This code is often accompanied by getopt or getopts to set $@ to the output of the aforementioned option parsers, however, you can also use it to creat...

Bash • When to use eval

Create the project

1- First all, install https://www.meteor.com/install 2- Create a project. (--bare is to create an empty project) meteor create --bare MyAwesomeProject 3- Create the minimal file structure (-p to create intermediate directories): cd MyAwesomeProject mkdir -p client server imports/api imports/ui/...

meteor • Meteor + React + ReactRouter

Add React + ReactRouter

If necessary, change to your project directory cd MyAwesomeProject 1- Add react and react-router meteor npm install --save [email protected] [email protected] [email protected] 2- Edit client/main.html, and replace the content will be: <body> <div id="react-root"></div...

meteor • Meteor + React + ReactRouter

Step 3- Add Accounts

If necessary, change to your project directory cd MyAwesomeProject 1- Add accounts packages: meteor add accounts-base accounts-password react-meteor-data 2- Add the routes to login and signup pages in imports/startup/Routes.jsx The render() method will be as follows: render() { return ( ...

meteor • Meteor + React + ReactRouter

Add roles

1- Add roles package ( https://github.com/alanning/meteor-roles) meteor add alanning:roles 2- Create some roles constants. In file imports/api/accounts/roles.js const ROLES = { ROLE1: 'ROLE1', ROLE2: 'ROLE2', ADMIN: 'ADMIN' }; export default ROLES; 3- I'll not show how to add/upda...

meteor • Meteor + React + ReactRouter

Basic Drop Table Syntax

db2 connect to {databaseName} db2 drop table {schema}.{table} db2 connect reset The schema is not necessary if it matches the current user name. The "db2" prefix is not necessary if you are already in a DB2 command prompt.

db2 • Drop table

Concatenated loops Test

Two loops are concatenated if it’s possible to reach one after exiting the other on same path from entrance to exit. Sometimes these two loops are independent to each other. In those cases we can apply the design techniques specified as part of single loop testing. But if the iteration values in on...

unit-testing • Unit testing of Loops (Java)

Installation or Setup

Ubuntu # sudo apt-get update # sudo apt-get install vlc vlc-plugin-pulse mozilla-plugin-vlc Windows Recommended The normal and recommended way to install VLC on a Windows operating system is via the installer package.(Download Link)

vlc • Getting started with vlc

Sample .vue component file

<template> <div class="nice">Component {{title}}</div> </template> <script> export default { data() { return { title: "awesome!" }; } } </script> <style> .nice { background-col...

Vue.js • Vue single file components

Create a term frequency matrix

The simplest approach to the problem (and the most commonly used so far) is to split sentences into tokens. Simplifying, words have abstract and subjective meanings to the people using and receiving them, tokens have an objective interpretation: an ordered sequence of characters (or bytes). Once sen...

R Language • Natural language processing

Opening the Visual Basic Editor

Step 1: Open a Document Step 2 Option A: Press Alt + F11 This is the standard shortcut to open the VBE. Step 2 Option B: Developer Tab --> View Code First, the Developer Tab must be added to the ribbon. Go to File -> Options -> Customize Ribbon, then check the box for developer. Th...

word-vba • Getting started with word-vba

Numpy n-dimensional array: the ndarray

The core data structure in numpy is the ndarray (short for n-dimensional array). ndarrays are homogeneous (i.e. they contain items of the same data-type) contain items of fixed sizes (given by a shape, a tuple of n positive integers that specify the sizes of each dimension) One-dimensional ar...

numpy • Arrays

Create first outlook-addin - Hello World

Open Visual Studio Select File --> New --> Project menu or push Ctrl + Shift + N buttons Select Outlook VSTO Add-in template Add the following code to the project: private void ThisAddIn_Startup(object sender, System.EventArgs e) { MessageBox.Show("Hel...

outlook-addin • Getting started with outlook-addin

Using Associated Objects

Associated objects are useful when you want to add functionality to existing classes which requires holding state. For example, adding a activity indicator to every UIView: Objective-C Implementation #import <objc/runtime.h> static char ActivityIndicatorKey; @implementation UIView (Ac...

iOS • Runtime in Objective-C

Integral Type Ranges

Integral type ranges ( IntRange , LongRange , CharRange ) have an extra feature: they can be iterated over. The compiler takes care of converting this analogously to Java's indexed for-loop, without extra overhead for (i in 1..4) print(i) // prints "1234" for (i in 4..1) print(i) // pri...

Kotlin • Ranges

Packing structures

By default structures are padded in C. If you want to avoid this behaviour, you have to explicitly request it. Under GCC it's __attribute__((__packed__)). Consider this example on a 64-bit machine: struct foo { char *p; /* 8 bytes */ char c; /* 1 byte */ long x; /* 8 bytes */ ...

C Language • Structure Padding and Packing

Exploring ModalPresentationStyle using Interface Builder

This will be a very basic app which will illustrate different ModalpresentationStyle in iOS. According to documentation found here, There are 9 different values for UIModalPresentationStyle which are as follows, fullScreen pageSheet formSheet currentContext custom overFullScreen overCurrent...

iOS • ModelPresentationStyles

Expected errors when generating Angular 2 components in .NET Core project (version 0.8.3)

When generating new Angular 2 components in a .NET Core project, you may run into the following errors (as of version 0.8.3): Error locating module for declaration SilentError: No module files found OR No app module found. Please add your new Class to your component. Identica...

asp.net-core • Angular2 and .Net Core