Rust for Python Developers - Unsigned, Signed Integers and Casting

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Unsigned Integer Types

Unsigned integer types in Rust start with u and it has 8, 16, 32, 64, and 128-bit. The minimum and maximum values are from 0 to 2ⁿ-1.

For example u8 has 0 to 2⁸-1, which is 255. The following table shows all the details for unsigned integers.

If you try to assign a negative number to an unsigned type, it will fail.

- is one of Rust's unary operators and it is the negation operator for signed integer types and floating-point types.