22 lines
461 B
Rust
22 lines
461 B
Rust
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trait MyNum : Add<self,self>, Sub<self,self>, Mul<self,self> {
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}
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impl int : MyNum {
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pure fn add(other: &int) -> int { self + *other }
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pure fn sub(other: &int) -> int { self - *other }
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pure fn mul(other: &int) -> int { self * *other }
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}
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fn f<T:Copy MyNum>(x: T, y: T) -> (T, T, T) {
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return (x + y, x - y, x * y);
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}
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fn main() {
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let (x, y) = (3, 5);
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let (a, b, c) = f(x, y);
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assert a == 8;
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assert b == -2;
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assert c == 15;
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}
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