6 //~^ WARN for loop over an `Option`. This is more readably written as an `if let` statement
7 //~| HELP to check pattern in a loop use `while let`
8 //~| HELP consider using `if let` to clear intent
9 for _ in Ok::<_, ()>(1) {}
10 //~^ WARN for loop over a `Result`. This is more readably written as an `if let` statement
11 //~| HELP to check pattern in a loop use `while let`
12 //~| HELP consider using `if let` to clear intent
14 // `Iterator::next` specific
15 for _ in [0; 0].iter().next() {}
16 //~^ WARN for loop over an `Option`. This is more readably written as an `if let` statement
17 //~| HELP to iterate over `[0; 0].iter()` remove the call to `next`
18 //~| HELP consider using `if let` to clear intent
20 // `Result<impl Iterator, _>`, but function doesn't return `Result`
21 for _ in Ok::<_, ()>([0; 0].iter()) {}
22 //~^ WARN for loop over a `Result`. This is more readably written as an `if let` statement
23 //~| HELP to check pattern in a loop use `while let`
24 //~| HELP consider using `if let` to clear intent
27 fn _returns_result() -> Result<(), ()> {
28 // `Result<impl Iterator, _>`
29 for _ in Ok::<_, ()>([0; 0].iter()) {}
30 //~^ WARN for loop over a `Result`. This is more readably written as an `if let` statement
31 //~| HELP to check pattern in a loop use `while let`
32 //~| HELP consider unwrapping the `Result` with `?` to iterate over its contents
33 //~| HELP consider using `if let` to clear intent
35 // `Result<impl IntoIterator>`
36 for _ in Ok::<_, ()>([0; 0]) {}
37 //~^ WARN for loop over a `Result`. This is more readably written as an `if let` statement
38 //~| HELP to check pattern in a loop use `while let`
39 //~| HELP consider unwrapping the `Result` with `?` to iterate over its contents
40 //~| HELP consider using `if let` to clear intent