const statement

^Syntax
ConstStatement :
   const IDENTIFIER: Type = Expression

A const statement introduces a named constant value. Constants are either directly inlined wherever they are used or loaded from the contract code depending on their type.

Example:

const TEN: u256 = 10
const HUNDO: u256 = TEN * TEN

contract Foo {
  pub fn bar() -> u256 {
    return HUNDO
  }
}