C-like

enum can also be used as C-like enums.

  1. // An attribute to hide warnings for unused code.
  2. #![allow(dead_code)]
  4. // enum with implicit discriminator (starts at 0)
  5. enum Number {
  6.     Zero,
  7.     One,
  8.     Two,
  9. }
  11. // enum with explicit discriminator
  12. enum Color {
  13.     Red = 0xff0000,
  14.     Green = 0x00ff00,
  15.     Blue = 0x0000ff,
  16. }
  18. fn main() {
  19.     // `enums` can be cast as integers.
  20.     println!("zero is {}", Number::Zero as i32);
  21.     println!("one is {}", Number::One as i32);
  23.     println!("roses are #{:06x}", Color::Red as i32);
  24.     println!("violets are #{:06x}", Color::Blue as i32);
  25. }

See also:

casting