rust-clippy/tests/ui/iter_overeager_cloned.stderr

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Text

error: unnecessarily eager cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:7:29
|
LL | let _: Option<String> = vec.iter().cloned().last();
| ^^^^^^^^^^----------------
| |
| help: try: `.last().cloned()`
|
= note: `-D clippy::iter-overeager-cloned` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::iter_overeager_cloned)]`
error: unnecessarily eager cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:9:29
|
LL | let _: Option<String> = vec.iter().chain(vec.iter()).cloned().next();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^----------------
| |
| help: try: `.next().cloned()`
error: unneeded cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:11:20
|
LL | let _: usize = vec.iter().filter(|x| x == &"2").cloned().count();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-----------------
| |
| help: try: `.count()`
|
= note: `-D clippy::redundant-clone` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::redundant_clone)]`
error: unnecessarily eager cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:13:21
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LL | let _: Vec<_> = vec.iter().cloned().take(2).collect();
| ^^^^^^^^^^-----------------
| |
| help: try: `.take(2).cloned()`
error: unnecessarily eager cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:15:21
|
LL | let _: Vec<_> = vec.iter().cloned().skip(2).collect();
| ^^^^^^^^^^-----------------
| |
| help: try: `.skip(2).cloned()`
error: unnecessarily eager cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:17:13
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LL | let _ = vec.iter().filter(|x| x == &"2").cloned().nth(2);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^----------------
| |
| help: try: `.nth(2).cloned()`
error: unnecessarily eager cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:19:13
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LL | let _ = [Some(Some("str".to_string())), Some(Some("str".to_string()))]
| _____________^
LL | | .iter()
LL | | .cloned()
LL | | .flatten();
| |__________________^
|
help: try
|
LL ~ .iter()
LL ~ .flatten().cloned();
|
error: unnecessarily eager cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:24:13
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LL | let _ = vec.iter().cloned().filter(|x| x.starts_with('2'));
| ^^^^^^^^^^----------------------------------------
| |
| help: try: `.filter(|&x| x.starts_with('2')).cloned()`
error: unnecessarily eager cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:26:13
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LL | let _ = vec.iter().cloned().find(|x| x == "2");
| ^^^^^^^^^^----------------------------
| |
| help: try: `.find(|&x| x == "2").cloned()`
error: unnecessarily eager cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:30:17
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LL | let _ = vec.iter().cloned().filter(f);
| ^^^^^^^^^^-------------------
| |
| help: try: `.filter(|&x| f(x)).cloned()`
error: unnecessarily eager cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:31:17
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LL | let _ = vec.iter().cloned().find(f);
| ^^^^^^^^^^-----------------
| |
| help: try: `.find(|&x| f(x)).cloned()`
error: unnecessarily eager cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:37:17
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LL | let _ = vec.iter().cloned().filter(f);
| ^^^^^^^^^^-------------------
| |
| help: try: `.filter(|&x| f(x)).cloned()`
error: unnecessarily eager cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:38:17
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LL | let _ = vec.iter().cloned().find(f);
| ^^^^^^^^^^-----------------
| |
| help: try: `.find(|&x| f(x)).cloned()`
error: unnecessarily eager cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:45:9
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LL | iter.cloned().filter(move |(&a, b)| a == 1 && b == &target)
| ^^^^-------------------------------------------------------
| |
| help: try: `.filter(move |&(&a, b)| a == 1 && b == &target).cloned()`
error: unnecessarily eager cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:56:13
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LL | iter.cloned().filter(move |S { a, b }| **a == 1 && b == &target)
| ^^^^------------------------------------------------------------
| |
| help: try: `.filter(move |&S { a, b }| **a == 1 && b == &target).cloned()`
error: unneeded cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:60:13
|
LL | let _ = vec.iter().cloned().map(|x| x.len());
| ^^^^^^^^^^--------------------------
| |
| help: try: `.map(|x| x.len())`
error: unneeded cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:65:13
|
LL | let _ = vec.iter().cloned().for_each(|x| assert!(!x.is_empty()));
| ^^^^^^^^^^----------------------------------------------
| |
| help: try: `.for_each(|x| assert!(!x.is_empty()))`
error: unneeded cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:67:13
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LL | let _ = vec.iter().cloned().all(|x| x.len() == 1);
| ^^^^^^^^^^-------------------------------
| |
| help: try: `.all(|x| x.len() == 1)`
error: unneeded cloning of iterator items
--> $DIR/iter_overeager_cloned.rs:69:13
|
LL | let _ = vec.iter().cloned().any(|x| x.len() == 1);
| ^^^^^^^^^^-------------------------------
| |
| help: try: `.any(|x| x.len() == 1)`
error: aborting due to 19 previous errors