2
0
Fork 0
mirror of https://github.com/rust-lang/rust-clippy synced 2024-12-27 13:33:26 +00:00
rust-clippy/tests/ui/needless_collect.rs
2021-02-27 14:16:01 +09:00

21 lines
728 B
Rust

// run-rustfix
#![allow(unused, clippy::suspicious_map, clippy::iter_count)]
use std::collections::{BTreeSet, HashMap, HashSet};
#[warn(clippy::needless_collect)]
#[allow(unused_variables, clippy::iter_cloned_collect, clippy::iter_next_slice)]
fn main() {
let sample = [1; 5];
let len = sample.iter().collect::<Vec<_>>().len();
if sample.iter().collect::<Vec<_>>().is_empty() {
// Empty
}
sample.iter().cloned().collect::<Vec<_>>().contains(&1);
sample.iter().map(|x| (x, x)).collect::<HashMap<_, _>>().len();
// Notice the `HashSet`--this should not be linted
sample.iter().collect::<HashSet<_>>().len();
// Neither should this
sample.iter().collect::<BTreeSet<_>>().len();
}