1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
//@ check-pass
#![allow(unused_variables)]
// Test that we normalize associated types that appear in bounds; if
// we didn't, the call to `self.split2()` fails to type check.
use std::marker::PhantomData;
struct Splits<'a, T, P>(PhantomData<(&'a(),T,P)>);
struct SplitsN<I>(PhantomData<I>);
trait SliceExt2 {
type Item;
fn split2<'a, P>(&'a self, pred: P) -> Splits<'a, Self::Item, P>
where P: FnMut(&Self::Item) -> bool;
fn splitn2<'a, P>(&'a self, n: usize, pred: P) -> SplitsN<Splits<'a, Self::Item, P>>
where P: FnMut(&Self::Item) -> bool;
}
impl<T> SliceExt2 for [T] {
type Item = T;
fn split2<P>(&self, pred: P) -> Splits<T, P> where P: FnMut(&T) -> bool {
loop {}
}
fn splitn2<P>(&self, n: usize, pred: P) -> SplitsN<Splits<T, P>> where P: FnMut(&T) -> bool {
self.split2(pred);
loop {}
}
}
fn main() { }
|
