rust-clippy/tests/ui/flat_map_option.rs

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// run-rustfix
#![warn(clippy::flat_map_option)]
#![allow(clippy::redundant_closure, clippy::unnecessary_filter_map)]
fn main() {
// yay
let c = |x| Some(x);
let _ = [1].iter().flat_map(c);
let _ = [1].iter().flat_map(Some);
// nay
let _ = [1].iter().flat_map(|_| &Some(1));
}