diff options
Diffstat (limited to 'tests/ui/impl-trait/in-trait/success.rs')
-rw-r--r-- | tests/ui/impl-trait/in-trait/success.rs | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/tests/ui/impl-trait/in-trait/success.rs b/tests/ui/impl-trait/in-trait/success.rs new file mode 100644 index 000000000..4cbe682b4 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/success.rs @@ -0,0 +1,40 @@ +// check-pass + +#![feature(return_position_impl_trait_in_trait)] +#![allow(incomplete_features)] + +use std::fmt::Display; + +trait Foo { + fn bar(&self) -> impl Display; +} + +impl Foo for i32 { + fn bar(&self) -> i32 { + *self + } +} + +impl Foo for &'static str { + fn bar(&self) -> &'static str { + *self + } +} + +struct Yay; + +impl Foo for Yay { + fn bar(&self) -> String { + String::from(":^)") + } +} + +fn foo_generically<T: Foo>(t: T) { + println!("{}", t.bar()); +} + +fn main() { + println!("{}", "Hello, world.".bar()); + println!("The answer is {}!", 42.bar()); + foo_generically(Yay); +} |