tests/ui/needless_collect_indirect.stderr

   1 error: avoid using `collect()` when not needed
   2   --> $DIR/needless_collect_indirect.rs:5:39
   3    |
   4 LL |     let indirect_iter = sample.iter().collect::<Vec<_>>();
   5    |                                       ^^^^^^^
   6 LL |     indirect_iter.into_iter().map(|x| (x, x + 1)).collect::<HashMap<_, _>>();
   7    |     ------------------------- the iterator could be used here instead
   8    |
   9    = note: `-D clippy::needless-collect` implied by `-D warnings`
  10 help: use the original Iterator instead of collecting it and then producing a new one
  11    |
  12 LL |
  13 LL |     sample.iter().map(|x| (x, x + 1)).collect::<HashMap<_, _>>();
  14    |
  15
  16 error: avoid using `collect()` when not needed
  17   --> $DIR/needless_collect_indirect.rs:7:38
  18    |
  19 LL |     let indirect_len = sample.iter().collect::<VecDeque<_>>();
  20    |                                      ^^^^^^^
  21 LL |     indirect_len.len();
  22    |     ------------------ the iterator could be used here instead
  23    |
  24 help: take the original Iterator's count instead of collecting it and finding the length
  25    |
  26 LL |
  27 LL |     sample.iter().count();
  28    |
  29
  30 error: avoid using `collect()` when not needed
  31   --> $DIR/needless_collect_indirect.rs:9:40
  32    |
  33 LL |     let indirect_empty = sample.iter().collect::<VecDeque<_>>();
  34    |                                        ^^^^^^^
  35 LL |     indirect_empty.is_empty();
  36    |     ------------------------- the iterator could be used here instead
  37    |
  38 help: check if the original Iterator has anything instead of collecting it and seeing if it's empty
  39    |
  40 LL |
  41 LL |     sample.iter().next().is_none();
  42    |
  43
  44 error: avoid using `collect()` when not needed
  45   --> $DIR/needless_collect_indirect.rs:11:43
  46    |
  47 LL |     let indirect_contains = sample.iter().collect::<VecDeque<_>>();
  48    |                                           ^^^^^^^
  49 LL |     indirect_contains.contains(&&5);
  50    |     ------------------------------- the iterator could be used here instead
  51    |
  52 help: check if the original Iterator contains an element instead of collecting then checking
  53    |
  54 LL |
  55 LL |     sample.iter().any(|x| x == &5);
  56    |
  57
  58 error: avoid using `collect()` when not needed
  59   --> $DIR/needless_collect_indirect.rs:23:48
  60    |
  61 LL |     let non_copy_contains = sample.into_iter().collect::<Vec<_>>();
  62    |                                                ^^^^^^^
  63 LL |     non_copy_contains.contains(&a);
  64    |     ------------------------------ the iterator could be used here instead
  65    |
  66 help: check if the original Iterator contains an element instead of collecting then checking
  67    |
  68 LL |
  69 LL |     sample.into_iter().any(|x| x == a);
  70    |
  71
  72 error: aborting due to 5 previous errors
  73