mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-14 17:07:17 +00:00
29 lines
1 KiB
Rust
29 lines
1 KiB
Rust
// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
|
|
// file at the top-level directory of this distribution.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
|
// option. This file may not be copied, modified, or distributed
|
|
// except according to those terms.
|
|
|
|
|
|
|
|
|
|
use std::collections::{HashMap, HashSet, BTreeSet};
|
|
|
|
#[warn(clippy::needless_collect)]
|
|
#[allow(unused_variables, clippy::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);
|
|
sample.iter().map(|x| (x, x)).collect::<HashMap<_, _>>().len();
|
|
// Notice the `HashSet`--this should not be linted
|
|
sample.iter().collect::<HashSet<_>>().len();
|
|
// Neither should this
|
|
sample.iter().collect::<BTreeSet<_>>().len();
|
|
}
|