23 lines
532 B
Rust
23 lines
532 B
Rust
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trait A { fn a(&self) -> int; }
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trait B: A { fn b(&self) -> int; }
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trait C: A { fn c(&self) -> int; }
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struct S { bogus: () }
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impl S: A { fn a(&self) -> int { 10 } }
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impl S: B { fn b(&self) -> int { 20 } }
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impl S: C { fn c(&self) -> int { 30 } }
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// Multiple type params, multiple levels of inheritance
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fn f<X: A, Y: B, Z: C>(x: &X, y: &Y, z: &Z) {
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assert x.a() == 10;
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assert y.a() == 10;
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assert y.b() == 20;
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assert z.a() == 10;
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assert z.c() == 30;
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}
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fn main() {
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let s = &S { bogus: () };
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f(s, s, s);
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}
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