33 lines
776 B
Rust
33 lines
776 B
Rust
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#![warn(clippy::all, clippy::pedantic)]
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#[derive(Debug, Copy, Clone)]
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enum Flavor {
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Chocolate,
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}
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#[derive(Debug, Copy, Clone)]
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enum Dessert {
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Banana,
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Pudding,
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Cake(Flavor),
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}
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fn main() {
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let desserts_of_the_week = vec![Dessert::Banana, Dessert::Cake(Flavor::Chocolate), Dessert::Pudding];
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let a = ["lol", "NaN", "2", "5", "Xunda"];
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let _: Option<i32> = a.iter().find(|s| s.parse::<i32>().is_ok()).map(|s| s.parse().unwrap());
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let _: Option<Flavor> = desserts_of_the_week
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.iter()
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.find(|dessert| match *dessert {
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Dessert::Cake(_) => true,
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_ => false,
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})
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.map(|dessert| match *dessert {
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Dessert::Cake(ref flavor) => *flavor,
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_ => unreachable!(),
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});
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}
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