37 lines
615 B
Rust
37 lines
615 B
Rust
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trait Panda<T> {
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fn chomp(bamboo: &T) -> T;
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}
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trait Add<RHS,Result>: Panda<RHS> {
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fn add(rhs: &RHS) -> Result;
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}
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trait MyNum : Add<self,self> { }
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struct MyInt { val: int }
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impl MyInt : Panda<MyInt> {
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fn chomp(bamboo: &MyInt) -> MyInt {
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mi(self.val + bamboo.val)
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}
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}
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impl MyInt : Add<MyInt, MyInt> {
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fn add(other: &MyInt) -> MyInt { self.chomp(other) }
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}
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impl MyInt : MyNum;
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fn f<T:MyNum>(x: T, y: T) -> T {
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return x.add(&y).chomp(&y);
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}
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fn mi(v: int) -> MyInt { MyInt { val: v } }
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fn main() {
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let (x, y) = (mi(3), mi(5));
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let z = f(x, y);
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assert z.val == 13;
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}
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