3 #![allow(unused, clippy::suspicious_map, clippy::iter_count)]
5 use std::collections::{BTreeMap, BTreeSet, BinaryHeap, HashMap, HashSet, LinkedList};
7 #[warn(clippy::needless_collect)]
8 #[allow(unused_variables, clippy::iter_cloned_collect, clippy::iter_next_slice)]
11 let len = sample.iter().collect::<Vec<_>>().len();
12 if sample.iter().collect::<Vec<_>>().is_empty() {
15 sample.iter().cloned().collect::<Vec<_>>().contains(&1);
16 // #7164 HashMap's and BTreeMap's `len` usage should not be linted
17 sample.iter().map(|x| (x, x)).collect::<HashMap<_, _>>().len();
18 sample.iter().map(|x| (x, x)).collect::<BTreeMap<_, _>>().len();
20 sample.iter().map(|x| (x, x)).collect::<HashMap<_, _>>().is_empty();
21 sample.iter().map(|x| (x, x)).collect::<BTreeMap<_, _>>().is_empty();
23 // Notice the `HashSet`--this should not be linted
24 sample.iter().collect::<HashSet<_>>().len();
25 // Neither should this
26 sample.iter().collect::<BTreeSet<_>>().len();
28 sample.iter().collect::<LinkedList<_>>().len();
29 sample.iter().collect::<LinkedList<_>>().is_empty();
30 sample.iter().cloned().collect::<LinkedList<_>>().contains(&1);
31 sample.iter().collect::<LinkedList<_>>().contains(&&1);
33 // `BinaryHeap` doesn't have `contains` method
34 sample.iter().collect::<BinaryHeap<_>>().len();
35 sample.iter().collect::<BinaryHeap<_>>().is_empty();