mirror of
https://github.com/rust-lang/rust
synced 2024-10-14 12:33:57 +00:00
22 lines
305 B
Rust
22 lines
305 B
Rust
//@ run-pass
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trait Foo {
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fn f(&self) -> isize;
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}
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struct A {
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x: isize
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}
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impl Foo for A {
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fn f(&self) -> isize {
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println!("Today's number is {}", self.x);
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return self.x;
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}
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}
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pub fn main() {
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let a = A { x: 3 };
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let b = (&a) as &dyn Foo;
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assert_eq!(b.f(), 3);
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}
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