21 lines
497 B
Rust
21 lines
497 B
Rust
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iface foo {
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fn foo() -> int;
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fn bar(p: int) -> int;
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}
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impl of foo for int {
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fn foo() -> int { self }
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fn bar(p: int) -> int { p * self.foo() }
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}
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impl <T: foo> of foo for [T] {
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fn foo() -> int { vec::foldl(0, self, {|a, b| a + b.foo()}) }
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fn bar(p: int) -> int { p + self.len() as int }
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}
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fn main() {
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let x = [1, 2, 3];
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let y = x.foo, z = [4, 5, 6].foo;
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assert y() + z() == 21;
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let a = x.bar, b = bind [4, 5, 6].bar(_);
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assert a(1) + b(2) + z() == 24;
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}
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