Variables

In Umbra, variables must always be explicitly typed, with the option to declare them as either const or mut, providing control over immutability and mutability in code.

Mutable and constants

types.u

const name str = "Peam"
mut age num = 24
const fool bool = true

mut person hashmap = {
  name: name,
  age: age,
}

const people arr = [person]

Nullable

Additionally, by adding a ? after the type, a variable can be made nullable, allowing it to hold either a value of the specified type or null.

types.u

mut name str? = "Peam"
name = null

Not initialized

Variables not initialized should be set as nullable when declaring

types.u

mut name str?

Next example: Loops