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28 lines
389 B
Rust
28 lines
389 B
Rust
pub trait Foo {
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type Associated;
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}
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pub struct X;
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pub struct Y;
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impl Foo for X {
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type Associated = ();
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}
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impl Foo for Y {
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type Associated = ();
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}
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impl X {
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pub fn returns_sized<'a>(&'a self) -> impl Foo<Associated=()> + 'a {
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X
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}
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}
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impl Y {
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pub fn returns_unsized<'a>(&'a self) -> Box<impl ?Sized + Foo<Associated=()> + 'a> {
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Box::new(X)
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}
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}
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