rust/tests/ui/iter_overeager_cloned.stderr

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2021-12-31 00:39:53 -06:00
error: called `cloned().last()` on an `Iterator`. It may be more efficient to call `last().cloned()` instead
--> $DIR/iter_overeager_cloned.rs:7:29
|
LL | let _: Option<String> = vec.iter().cloned().last();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `vec.iter().last().cloned()`
|
= note: `-D clippy::iter-overeager-cloned` implied by `-D warnings`
error: called `cloned().next()` on an `Iterator`. It may be more efficient to call `next().cloned()` instead
--> $DIR/iter_overeager_cloned.rs:9:29
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LL | let _: Option<String> = vec.iter().chain(vec.iter()).cloned().next();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `vec.iter().chain(vec.iter()).next().cloned()`
error: called `cloned().count()` on an `Iterator`. It may be more efficient to call `count()` instead
--> $DIR/iter_overeager_cloned.rs:11:20
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LL | let _: usize = vec.iter().filter(|x| x == &"2").cloned().count();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `vec.iter().filter(|x| x == &"2").count()`
|
= note: `-D clippy::redundant-clone` implied by `-D warnings`
error: called `cloned().take(...)` on an `Iterator`. It may be more efficient to call `take(...).cloned()` instead
--> $DIR/iter_overeager_cloned.rs:13:21
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LL | let _: Vec<_> = vec.iter().cloned().take(2).collect();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `vec.iter().take(2).cloned()`
error: called `cloned().skip(...)` on an `Iterator`. It may be more efficient to call `skip(...).cloned()` instead
--> $DIR/iter_overeager_cloned.rs:15:21
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LL | let _: Vec<_> = vec.iter().cloned().skip(2).collect();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `vec.iter().skip(2).cloned()`
error: called `cloned().nth(...)` on an `Iterator`. It may be more efficient to call `nth(...).cloned()` instead
--> $DIR/iter_overeager_cloned.rs:17:13
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LL | let _ = vec.iter().filter(|x| x == &"2").cloned().nth(2);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `vec.iter().filter(|x| x == &"2").nth(2).cloned()`
error: called `cloned().flatten()` on an `Iterator`. It may be more efficient to call `flatten().cloned()` instead
--> $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();
| |__________________^
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help: try this
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LL ~ let _ = [Some(Some("str".to_string())), Some(Some("str".to_string()))]
LL ~ .iter().flatten().cloned();
|
error: aborting due to 7 previous errors