Tutorial by Topics: constant

Go supports constants of character, string, boolean, and numeric values.

Magic constants are distinguished by their __CONSTANTNAME__ form. There are currently eight magical constants that change depending on where they are used. For example, the value of __LINE__depends on the line that it's used on in your script. These special constants are case-insensitive and are...

define ( string $name , mixed $value [, bool $case_insensitive = false ] ) const CONSTANT_NAME = VALUE; Constants are used to store the values that are not supposed to be changed later. They also are often used to store the configuration parameters especially those which define the environ...

UPPERCASE your constant: Writing constant in capital is a common best practice used in many languages. It's also useful to clearly identify the nature of injected elements: When you see .controller('MyController', function($scope, Profile, EVENT)), you instantly know that: $scope is an angular...

MY_CONSTANT_NAME = "my value" Constants are useful in Ruby when you have values that you do not want to be mistakenly changed in a program, such as API keys.

So this is a summary analysis I've done based on the methods listed at How do you define constants in Elixir modules?. I'm posting it for a couple reasons: Most Elixir documentation is quite thorough, but I found this key architectural decision lacking guidance - so I would have requested it as...

#![feature(associated_consts)] const ID: i32; This feature is currently available only in nightly compiler. Tracking issue #29646

What does 'const member functions' of a class really means. The simple definition seems to be that, a const member function cannot change the object. But what does 'can not change' really means here. It simply means that you cannot do an assignment for class data members. However, you can do othe...