1 // Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution.
4 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
5 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
7 // option. This file may not be copied, modified, or distributed
8 // except according to those terms.
10 use std::collections::{BTreeSet, HashMap, HashSet};
12 #[warn(clippy::needless_collect)]
13 #[allow(unused_variables, clippy::iter_cloned_collect)]
16 let len = sample.iter().collect::<Vec<_>>().len();
17 if sample.iter().collect::<Vec<_>>().is_empty() {
20 sample.iter().cloned().collect::<Vec<_>>().contains(&1);
21 sample.iter().map(|x| (x, x)).collect::<HashMap<_, _>>().len();
22 // Notice the `HashSet`--this should not be linted
23 sample.iter().collect::<HashSet<_>>().len();
24 // Neither should this
25 sample.iter().collect::<BTreeSet<_>>().len();