File: branches.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 (23 lines) | stat: -rw-r--r-- 490 bytes parent folder | download | duplicates (9) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
 
#![feature(type_alias_impl_trait)]

type Foo = impl std::fmt::Debug;

#[define_opaque(Foo)]
fn foo(b: bool) -> Foo {
    if b { vec![42_i32] } else { std::iter::empty().collect() }
}

type Bar = impl std::fmt::Debug;

#[define_opaque(Bar)]
fn bar(b: bool) -> Bar {
    let x: Bar = if b {
        vec![42_i32]
    } else {
        std::iter::empty().collect()
        //~^ ERROR  a value of type `Bar` cannot be built from an iterator over elements of type `_`
    };
    x
}

fn main() {}