Variables

Declare variables with let (mutable) or const (immutable):

let x = 10
let name = "Gor"
const PI = 3
 
# let can be reassigned
x = 20
 
# const cannot be reassigned — this would error:
# PI = 4

Variables declared with let can optionally omit the initializer (defaults to null):

let y
print(y)   # null

Variables declared with const must have an initializer.