3 #![warn(clippy::from_iter_instead_of_collect)]
4 #![allow(unused_imports)]
6 use std::collections::{BTreeMap, BTreeSet, HashMap, VecDeque};
7 use std::iter::FromIterator;
10 let iter_expr = std::iter::repeat(5).take(5);
11 let _ = iter_expr.collect::<Vec<_>>();
13 let _ = vec![5, 5, 5, 5].iter().enumerate().collect::<HashMap<usize, &i8>>();
15 Vec::from_iter(vec![42u32]);
17 let a = vec![0, 1, 2];
18 assert_eq!(a, (0..3).collect::<Vec<_>>());
19 assert_eq!(a, (0..3).collect::<Vec<i32>>());
21 let mut b = (0..3).collect::<VecDeque<_>>();
24 let mut b = (0..3).collect::<VecDeque<i32>>();
29 let mut b = (0..3).collect::<collections::VecDeque<i32>>();
33 let values = [(0, 'a'), (1, 'b'), (2, 'c'), (3, 'd')];
34 let bm = values.iter().cloned().collect::<BTreeMap<_, _>>();
35 let mut bar = bm.range(0..2).collect::<BTreeMap<_, _>>();
38 let mut bts = (0..3).collect::<BTreeSet<_>>();
42 let _ = (0..3).collect::<collections::BTreeSet<_>>();
43 let _ = (0..3).collect::<collections::BTreeSet<u32>>();
46 for _i in [1, 2, 3].iter().collect::<Vec<_>>() {}
47 for _i in [1, 2, 3].iter().collect::<Vec<&i32>>() {}