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                如果你想在一個切片或數組上匹配,你可以通過`slice_patterns`功能使用`&`: ~~~ #![feature(slice_patterns)] fn main() { let v = vec!["match_this", "1"]; match &v[..] { ["match_this", second] => println!("The second element is {}", second), _ => {}, } } ~~~ `advanced_slice_patterns`通道讓你使用`..`表明在一個切片的模式匹配中任意數量的元素。這個通配符對一個給定的數組只能只用一次。如果在`..`之前有一個標識符,結果會被綁定到那個名字上。例如: ~~~ #![feature(advanced_slice_patterns, slice_patterns)] fn is_symmetric(list: &[u32]) -> bool { match list { [] | [_] => true, [x, inside.., y] if x == y => is_symmetric(inside), _ => false } } fn main() { let sym = &[0, 1, 4, 2, 4, 1, 0]; assert!(is_symmetric(sym)); let not_sym = &[0, 1, 7, 2, 4, 1, 0]; assert!(!is_symmetric(not_sym)); } ~~~
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