File: type-alias-nested-impl-trait.rs

package info (click to toggle)
rustc 1.87.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 925,564 kB
  • sloc: xml: 158,127; python: 36,039; javascript: 19,761; sh: 19,737; cpp: 18,981; ansic: 13,133; asm: 4,376; makefile: 710; perl: 29; lisp: 28; ruby: 19; sql: 11
file content (15 lines) | stat: -rw-r--r-- 350 bytes parent folder | download | duplicates (10) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
 
//@ run-pass

#![feature(type_alias_impl_trait)]

use std::iter::{Chain, once};

type I<A> = Chain<A, impl Iterator<Item = &'static str>>;
#[define_opaque(I)]
fn test2<A: Iterator<Item = &'static str>>(x: A) -> I<A> {
    x.chain(once("5"))
}

fn main() {
    assert_eq!(vec!["1", "3", "5"], test2(["1", "3"].iter().cloned()).collect::<Vec<_>>());
}