Constants - language feature

Example from JavaScript, TypeScript, Static Typescript:

const one = 1

Example from Ruby:

# Constants in Ruby being with a capital letter. Will throw a warning or error, depending on runtime settings.
Name = "John"  
# Not a constant
name = "John"

Example from C3:

const FOO = 123;
const void* BAR = null;

Example from Jule:

const PI = 3.14159265359

Languages with Constants include Java, JavaScript, C, C++, PHP, C#, Ruby, Go, Rust, Kotlin, TypeScript, Objective-C, Julia, Dart, F#, Groovy, Chapel, SystemVerilog, C3, Jule, Angelscript, Pizza, Apex, Eclipse Command Language, C2, nimrod, Deesel, Tick C, cooC, Real-Time Concurrent C, Static Typescript

Languages without Constants include progsbase

Read more about Constants on the web: 1.

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