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int

The int keyword is a primitive signed integer type keyword. It denotes a signed integer type used in type annotations and declarations. Note that the uppercase spelling Int is a separate reserved word that maps to the same integer-type token.

Syntax & Example​

let total: int = -5;
fn offset(x: int): int {
    return x + 1;
}

Use Cases​

  • Annotating signed integer values, including negative numbers.
  • Declaring function parameters and return types for integer values.
  • Pairing with the wider family of fixed-size signed types (i8, i16, i32, i64, isize).

See also: uint, Int.