rust/tests/ui/suggestions/unused-closure-argument.rs
2023-01-11 09:32:08 +00:00

21 lines
370 B
Rust

#![deny(unused_variables)]
struct Point {
x: i32,
y: i32,
}
fn main() {
let points = vec!(Point { x: 1, y: 2 }, Point { x: 3, y: 4 });
let _: i32 = points.iter()
.map(|Point { x, y }| y)
//~^ ERROR unused variable
.sum();
let _: i32 = points.iter()
.map(|x| 4)
//~^ ERROR unused variable
.sum();
}