36 lines
654 B
Rust
36 lines
654 B
Rust
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#![deny(clippy::wildcard_match_arm)]
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#[derive(Clone, Copy, Debug, Eq, PartialEq)]
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enum Color {
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Red,
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Green,
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Blue,
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Rgb(u8, u8, u8),
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Cyan,
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}
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impl Color {
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fn is_monochrome(self) -> bool {
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match self {
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Color::Red | Color::Green | Color::Blue => true,
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Color::Rgb(r, g, b) => r | g == 0 || r | b == 0 || g | b == 0,
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Color::Cyan => false,
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}
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}
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}
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fn main() {
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let color = Color::Rgb(0, 0, 127);
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match color {
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Color::Red => println!("Red"),
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_ => eprintln!("Not red"),
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};
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match color {
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Color::Red => {},
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Color::Green => {},
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Color::Blue => {},
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Color::Cyan => {},
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c if c.is_monochrome() => {},
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Color::Rgb(_, _, _) => {},
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};
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}
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