Scalar Types

Signed integersi8, i16, i32, i64, i128, isize-10, 0, 1_000, 123i64
Unsigned integersu8, u16, u32, u64, u128, usize0, 123, 10u16
Floating point numbersf32, f643.14, -10.0e20, 2f32
Strings&str"foo", r#"\\"#
Unicode scalar valueschar'a', 'α', '∞'
Byte strings&[u8]b"abc", br#" " "#
Booleansbooltrue, false

The types have widths as follows:

  • iN, uN, and fN are N bits wide,
  • isize and usize are the width of a pointer,
  • char is 32 bit wide,
  • bool is 8 bit wide.