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