3 #![allow(unused_imports)]
4 #![warn(clippy::flat_map_identity)]
9 let iterator = [[0, 1], [2, 3], [4, 5]].iter();
10 let _ = iterator.flat_map(|x| x);
12 let iterator = [[0, 1], [2, 3], [4, 5]].iter();
13 let _ = iterator.flat_map(convert::identity);