mirror of https://github.com/rust-lang/rust.git
44 lines
842 B
Rust
44 lines
842 B
Rust
pub trait MyTrait2<X> {
|
|
type Output;
|
|
}
|
|
|
|
pub trait MyTrait {
|
|
type Item;
|
|
fn next(&mut self) -> Option<Self::Item>;
|
|
fn fold<B, F>(self, init: B, f: F) -> B
|
|
where
|
|
Self: Sized,
|
|
F: MyTrait2<(B, Self::Item), Output = B>;
|
|
}
|
|
|
|
pub struct Cloned<I>(I);
|
|
|
|
impl<'a, T, I> MyTrait for Cloned<I>
|
|
where
|
|
T: 'a + Clone,
|
|
I: MyTrait<Item = &'a T>,
|
|
{
|
|
type Item = T;
|
|
fn next(&mut self) -> Option<Self::Item> {
|
|
loop {}
|
|
}
|
|
fn fold<B, F>(self, init: B, f: F) -> B
|
|
where
|
|
Self: Sized,
|
|
F: MyTrait2<(B, Self::Item), Output = B>,
|
|
{
|
|
loop {}
|
|
}
|
|
}
|
|
|
|
pub trait MyFuture {
|
|
type Output;
|
|
}
|
|
|
|
pub trait MyIntoFuture {
|
|
type Output;
|
|
type Fut: MyFuture<Output = Self::Output>;
|
|
fn into_future(self) -> Self::Fut;
|
|
fn into_future_2(self, other: Self) -> Self::Fut;
|
|
}
|