Singletons are used to ensure that only one instance of an object is being created. The singleton allows only a single instance of itself to be created which means it controls its creation.
The singleton is one of the Gang of Four design patterns and is a creational pattern.
Thread-Safe Singleton ...
Fourier Transform is probably the first lesson in Digital Signal Processing, it's application is everywhere and it is a powerful tool when it comes to analyze data (in all sectors) or signals. Matlab has a set of powerful toolboxes for Fourier Transform. In this example, we will use Fourier Transfor...
If you set opacity on an element it will affect all its child elements. To set an opacity just on the background of an element you will have to use RGBA colors. Following example will have a black background with 0.6 opacity.
/* Fallback for web browsers that don't support RGBa */
background-color...
If your project depends on the external libraries, you should first install them with opam.
Assuming your dependencies are foo and bar and the main entry point of your project is foobar.ml you can then build a bytecode executable with
ocamlbuild -use-ocamlfind -pkgs 'foo,bar' foobar.byte
Warnin...
If your project has no external dependency and has foo.ml as its main entry point, you can compile a bytecode version with
ocamlbuild foo.byte
To get a native executable, run
ocamlbuild foo.native
Fortran 2003 introduced language features which can guarantee interoperability between C and Fortran (and to more languages by using C as an intermediary). These features are mostly accessed through the intrinsic module iso_c_binding:
use, intrinsic :: iso_c_binding
The intrinsic keyword here en...
For annotating some point of interest on map, we use pin annotation. Now, start by creating annotation object first.
MKPointAnnotation *pointAnnotation = [[MKPointAnnotation alloc] init];
Now provide coordinate to pointAnnotation,as
CLLocationCoordinate2D coordinate = CLLocationCoordinate2DMake...
In attempt to send a response asynchronously from chrome.runtime.onMessage callback we might try this wrong code:
chrome.runtime.onMessage.addListener(function(request, sender, sendResponse) {
$.ajax({
url: 'https://www.google.com',
method: 'GET',
success: functio...
Homebrew
You can install Node.js using the Homebrew package manager.
Start by updating brew:
brew update
You may need to change permissions or paths. It's best to run this before proceeding:
brew doctor
Next you can install Node.js by running:
brew install node
Once Node.js is installe...
Detailed instructions on getting laravel set up or installed.
composer is required for installing laravel easily.
There are 3 methods of installing laravel in your system:
Via Laravel Installer
Download the Laravel installer using composer
composer global require "laravel/installer&quo...
Transforms hold the majority of data about an object in unity, including it's parent(s), child(s), position, rotation, and scale. It also has functions to modify each of these properties. Every GameObject has a Transform.
Translating (moving) an object
// Move an object 10 units in the positive ...
You can find the installers on Node.js download page. Normally, Node.js recommends two versions of Node, the LTS version (long term support) and the current version (latest release). If you are new to Node, just go for the LTS and then click the Macintosh Installer button to download the package.
I...
Several values of the same type can be returned by passing an output iterator to the function. This is particularly common for generic functions (like the algorithms of the standard library).
Example:
template<typename Incrementable, typename OutputIterator>
void generate_sequence(Increment...
