Variables

Vega variables are immutable and non-nullable by default, meaning their value cannot be changed or set to nil without explicit declaration.

Declaration

Declared using := (inferred form) or T := (typed form).

The type is assigned as T if it is given; otherwise, type inference will attempt to infer the type. If inference fails, any will be assigned.

integer := 4
floating := 3.14
message := "Hello from Vega!"

Nullable Variables

Declared using maybe.

If the inferred form is used and type inference fails, maybe any will be assigned.

maybe optional_int := 4
maybe optional_float float := 3.14
maybe optional_any := nil /* ?any */

Mutable Variables

Declared using mut.

Mutations are performed with <-.

If the inferred form is used and type inference fails, mut any will be assigned.

mut mutable_int := 4
mut mutable_float float := 3.14
mut maybe mutable_any := nil

mutable_int <- 5
mutable_float <- 4.14
mutable_any <- "Hi!"