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#![warn(clippy::for_loops_over_fallibles)]
fn for_loops_over_fallibles() {
let option = Some(1);
let mut result = option.ok_or("x not found");
let v = vec![0, 1, 2];
// check over an `Option`
for x in option {
println!("{}", x);
}
// check over an `Option`
for x in option.iter() {
println!("{}", x);
}
// check over a `Result`
for x in result {
println!("{}", x);
}
// check over a `Result`
for x in result.iter_mut() {
println!("{}", x);
}
// check over a `Result`
for x in result.into_iter() {
println!("{}", x);
}
for x in option.ok_or("x not found") {
println!("{}", x);
}
// make sure LOOP_OVER_NEXT lint takes clippy::precedence when next() is the last call
// in the chain
for x in v.iter().next() {
println!("{}", x);
}
// make sure we lint when next() is not the last call in the chain
for x in v.iter().next().and(Some(0)) {
println!("{}", x);
}
for x in v.iter().next().ok_or("x not found") {
println!("{}", x);
}
// check for false positives
// for loop false positive
for x in v {
println!("{}", x);
}
// while let false positive for Option
while let Some(x) = option {
println!("{}", x);
break;
}
// while let false positive for Result
while let Ok(x) = result {
println!("{}", x);
break;
}
}
fn main() {}
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