rust-clippy/tests/ui/needless_collect.rs

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#[warn(clippy, needless_collect)]
#[allow(unused_variables, iter_cloned_collect)]
fn main() {
let sample = [1; 5];
let len = sample.iter().collect::<Vec<_>>().len();
if sample.iter().collect::<Vec<_>>().is_empty() {
// Empty
}
sample.iter().cloned().collect::<Vec<_>>().contains(&1);
}