mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-27 17:24:06 +00:00
15 lines
366 B
Rust
15 lines
366 B
Rust
use std::fmt::Debug;
|
|
|
|
// Test to suggest boxing the return type, and the closure branch of the `if`
|
|
|
|
fn print_on_or_the_other<'a>(a: i32, b: &'a String) -> dyn Fn() + 'a {
|
|
//~^ ERROR return type cannot have an unboxed trait object
|
|
if a % 2 == 0 {
|
|
move || println!("{a}")
|
|
} else {
|
|
Box::new(move || println!("{}", b))
|
|
}
|
|
}
|
|
|
|
fn main() {}
|