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planet : constant String := "Earth";const char *_planet = "Earth";(def planet "Earth")Clojure vars are constants by default.
const string _planet = "Earth";enum string planet = "Earth";This is a compile-time constant.
static immutable string planet = "Earth";This is a compile-time constant.
enum planet = "Earth";This is a compile-time constant.
immutable string planet = "Earth";This is a runtime constant.
const string planet = "Earth";This is a runtime constant.
const String _planet = "Earth";planet = "Earth"Elixir variables are immutable. You can rebind the name planet but this creates a new variable with the same name.
Planet = "Earth".All variables are unmutable.
character(*), parameter :: planet = "Earth"(sorry this is redundant with an already existing snippet; please delete this one)
character(len=*), parameter :: planet = "Earth"static final planet = "Earth"
static final planet = 'Earth'
static final planet = /Earth/
static final planet = '''Earth'''
static final planet = """Earth"""Various ways to define strings in Groovy.
planet = "Earth"In Haskell, definitions like this one are always immutable.
const planet = 'Earth'It's considered good practice to use const unless your variable is mutable
final String planet = "Earth";final String planet = "Earth";Use this when it is a local variable; when contained within a method.
(defparameter +planet+ "Earth")This is not technically constant, but is the most common way of doing it. The third-party library Alexandria provides define-constant that could define a constant and one could also use define-symbol-macro from the standard library
PLANET = "Earth"Not a constant but closest implementation
NSString * const Planet=@"Earth";There's a (weak) convention to keep constants capitalized
const
planet = 'Earth';const my $planet => 'Earth';Module Const::Fast is preferred over Readonly, which is greatly preferred over 'use constant'. Google "Perl Critic Policy Prohibit Constant Pragma" and read the Const::Fast documentation for more details.
use constant planet => 'Earth';
use constant PI => 3.14159;
use constant { RED => 1, BLUE => 2, GREEN => 3 };Perl's classic way to create constants. For various reasons, module Readonly (or even better, Const::Fast) are now preferred.
PLANET = 'Earth'Names of constants are by convention written in uppercase
Planet = 'Earth'Constants start with a capital.
val planet = "Earth"planet := 'Earth'.Literal strings in Smalltalk are immutable
Const PLANET = "Earth"