rust-clippy/tests/ui/map_flatten.rs

#![warn(clippy::all, clippy::pedantic)]
#![allow(clippy::missing_docs_in_private_items)]

fn main() {
    let _: Vec<_> = vec![5_i8; 6].into_iter().map(|x| 0..x).flatten().collect();
}
Lint for chaining flatten after map This change adds a lint to check for instances of `map(..).flatten()` that can be trivially shortened to `flat_map(..)` Closes #3196 2018-09-21 07:26:38 +00:00			`#![warn(clippy::all, clippy::pedantic)]`
			`#![allow(clippy::missing_docs_in_private_items)]`

			`fn main() {`
			`let _: Vec<_> = vec![5_i8; 6].into_iter().map(\|x\| 0..x).flatten().collect();`
			`}`