mirror of https://github.com/rust-lang/rust
38 lines
896 B
Rust
38 lines
896 B
Rust
//@ run-pass
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fn main() {
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let (mut a, mut b);
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(a, b) = (0, 1);
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assert_eq!((a, b), (0, 1));
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(b, a) = (a, b);
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assert_eq!((a, b), (1, 0));
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(a, .., b) = (1, 2);
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assert_eq!((a, b), (1, 2));
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(.., a) = (1, 2);
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assert_eq!((a, b), (2, 2));
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(..) = (3, 4);
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assert_eq!((a, b), (2, 2));
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(b, ..) = (5, 6, 7);
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assert_eq!(b, 5);
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(a, _) = (8, 9);
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assert_eq!(a, 8);
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// Test for a non-Copy type (String):
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let (mut c, mut d);
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(c, d) = ("c".to_owned(), "d".to_owned());
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assert_eq!(c, "c");
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assert_eq!(d, "d");
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(d, c) = (c, d);
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assert_eq!(c, "d");
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assert_eq!(d, "c");
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// Test nesting/parentheses:
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((a, b)) = (0, 1);
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assert_eq!((a, b), (0, 1));
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(((a, b)), (c)) = ((2, 3), d);
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assert_eq!((a, b), (2, 3));
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assert_eq!(c, "c");
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((a, .., b), .., (..)) = ((4, 5), ());
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assert_eq!((a, b), (4, 5));
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}
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