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November 12, 2016 21:09
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Tuple concatenation in Rust
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| trait And<B> { | |
| type Result; | |
| fn and(self, rhs: B) -> Self::Result; | |
| } | |
| impl<A, B> And<B> for (A,) { | |
| type Result = (A, B); | |
| fn and(self, rhs: B) -> (A, B) { | |
| (self.0, rhs) | |
| } | |
| } | |
| impl<A, B, C> And<C> for (A, B) { | |
| type Result = (A, B, C); | |
| fn and(self, rhs: C) -> (A, B, C) { | |
| (self.0, self.1, rhs) | |
| } | |
| } | |
| #[derive(Debug)] | |
| struct Container<T>(T); | |
| impl<A, B> And<Container<B>> for Container<A> | |
| where A: And<B> | |
| { | |
| type Result = Container<<A as And<B>>::Result>; | |
| fn and(self, rhs: Container<B>) -> Self::Result { | |
| Container(self.0.and(rhs.0)) | |
| } | |
| } | |
| fn main() { | |
| println!("{:?}", (1,).and(2).and(3)); | |
| println!("{:?}", Container((1,)).and(Container(2)).and(Container(3))); | |
| } |
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