use std::borrow::Cow; | |
pub trait IntoCow<'a, B: ?Sized> where B: ToOwned { | |
fn into_cow(self) -> Cow<'a, B>; | |
} | |
impl<'a> IntoCow<'a, str> for String { | |
fn into_cow(self) -> Cow<'a, str> { | |
Cow::Owned(self) | |
} | |
} | |
fn main() { | |
<String as IntoCow>::into_cow("foo".to_string()); | |
//~^ ERROR wrong number of type arguments: expected 1, found 0 | |
} |