40 lines
648 B
Rust
40 lines
648 B
Rust
// run-pass
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#![allow(non_camel_case_types)]
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#![allow(dead_code)]
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#![feature(box_syntax)]
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struct pair<A,B> {
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a: A, b: B
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}
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trait Invokable<A> {
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fn f(&self) -> (A, u16);
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}
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struct Invoker<A> {
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a: A,
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b: u16,
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}
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impl<A:Clone> Invokable<A> for Invoker<A> {
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fn f(&self) -> (A, u16) {
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(self.a.clone(), self.b)
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}
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}
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fn f<A:Clone + 'static>(a: A, b: u16) -> Box<dyn Invokable<A>+'static> {
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box Invoker {
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a: a,
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b: b,
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} as (Box<dyn Invokable<A>+'static>)
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}
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pub fn main() {
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let (a, b) = f(22_u64, 44u16).f();
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println!("a={} b={}", a, b);
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assert_eq!(a, 22u64);
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assert_eq!(b, 44u16);
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}
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