rust-clippy/tests/ui/while_loop.stderr

error: this loop could be written as a `while let` loop
  --> $DIR/while_loop.rs:19:5
   |
19 | /     loop {
20 | |         if let Some(_x) = y {
21 | |             let _v = 1;
22 | |         } else {
23 | |             break
24 | |         }
25 | |     }
   | |_____^ help: try: `while let Some(_x) = y { .. }`
   |
   = note: `-D clippy::while-let-loop` implied by `-D warnings`

error: this loop could be written as a `while let` loop
  --> $DIR/while_loop.rs:32:5
   |
32 | /     loop {
33 | |         match y {
34 | |             Some(_x) => true,
35 | |             None => break
36 | |         };
37 | |     }
   | |_____^ help: try: `while let Some(_x) = y { .. }`

error: this loop could be written as a `while let` loop
  --> $DIR/while_loop.rs:38:5
   |
38 | /     loop {
39 | |         let x = match y {
40 | |             Some(x) => x,
41 | |             None => break
...  |
44 | |         let _str = "foo";
45 | |     }
   | |_____^ help: try: `while let Some(x) = y { .. }`

error: this loop could be written as a `while let` loop
  --> $DIR/while_loop.rs:46:5
   |
46 | /     loop {
47 | |         let x = match y {
48 | |             Some(x) => x,
49 | |             None => break,
...  |
52 | |         { let _b = "foobar"; }
53 | |     }
   | |_____^ help: try: `while let Some(x) = y { .. }`

error: this loop could be written as a `while let` loop
  --> $DIR/while_loop.rs:68:5
   |
68 | /     loop {
69 | |         let (e, l) = match "".split_whitespace().next() {
70 | |             Some(word) => (word.is_empty(), word.len()),
71 | |             None => break
...  |
74 | |         let _ = (e, l);
75 | |     }
   | |_____^ help: try: `while let Some(word) = "".split_whitespace().next() { .. }`

error: this loop could be written as a `for` loop
  --> $DIR/while_loop.rs:78:33
   |
78 |     while let Option::Some(x) = iter.next() {
   |                                 ^^^^^^^^^^^ help: try: `for x in iter { .. }`
   |
   = note: `-D clippy::while-let-on-iterator` implied by `-D warnings`

error: this loop could be written as a `for` loop
  --> $DIR/while_loop.rs:83:25
   |
83 |     while let Some(x) = iter.next() {
   |                         ^^^^^^^^^^^ help: try: `for x in iter { .. }`

error: this loop could be written as a `for` loop
  --> $DIR/while_loop.rs:88:25
   |
88 |     while let Some(_) = iter.next() {}
   |                         ^^^^^^^^^^^ help: try: `for _ in iter { .. }`

error: this loop could be written as a `while let` loop
   --> $DIR/while_loop.rs:128:5
    |
128 | /     loop {
129 | |         let _ = match iter.next() {
130 | |             Some(ele) => ele,
131 | |             None => break
132 | |         };
133 | |         loop {}
134 | |     }
    | |_____^ help: try: `while let Some(ele) = iter.next() { .. }`

error: empty `loop {}` detected. You may want to either use `panic!()` or add `std::thread::sleep(..);` to the loop body.
   --> $DIR/while_loop.rs:133:9
    |
133 |         loop {}
    |         ^^^^^^^
    |
    = note: `-D clippy::empty-loop` implied by `-D warnings`

error: this loop could be written as a `for` loop
   --> $DIR/while_loop.rs:193:29
    |
193 |         while let Some(v) = y.next() { // use a for loop here
    |                             ^^^^^^^^ help: try: `for v in y { .. }`

error: this loop could be written as a `for` loop
   --> $DIR/while_loop.rs:220:26
    |
220 |     while let Some(..) = values.iter().next() {
    |                          ^^^^^^^^^^^^^^^^^^^^ help: try: `for _ in values.iter() { .. }`

error: aborting due to 12 previous errors