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needless_range_loop: improve documentation

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Tyler Weaver 2023-01-29 11:41:53 -07:00
parent 96c28d1f69
commit 4d266d31de
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3 changed files with 7 additions and 6 deletions
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3
clippy_lints/src/loops/mod.rs
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@ -61,7 +61,8 @@ declare_clippy_lint! {
///
/// ### Why is this bad?
/// Just iterating the collection itself makes the intent
/// more clear and is probably faster.
/// more clear and is probably faster because it eliminates
/// the bounds check that is done when indexing.
///
/// ### Example
/// ```rust

2
clippy_lints/src/loops/needless_range_loop.rs
View file

@ -149,7 +149,7 @@ pub(super) fn check<'tcx>(
|diag| {
multispan_sugg(
diag,
"consider using an iterator",
"consider using an iterator and enumerate",
vec![
(pat.span, format!("({}, <item>)", ident.name)),
(

8
tests/ui/needless_range_loop.stderr
View file

@ -49,7 +49,7 @@ error: the loop variable `i` is used to index `vec`
LL | for i in 0..vec.len() {
| ^^^^^^^^^^^^
|
help: consider using an iterator
help: consider using an iterator and enumerate
|
LL | for (i, <item>) in vec.iter().enumerate() {
| ~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~
@ -126,7 +126,7 @@ error: the loop variable `i` is used to index `vec`
LL | for i in 5..vec.len() {
| ^^^^^^^^^^^^
|
help: consider using an iterator
help: consider using an iterator and enumerate
|
LL | for (i, <item>) in vec.iter().enumerate().skip(5) {
| ~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@ -137,7 +137,7 @@ error: the loop variable `i` is used to index `vec`
LL | for i in 5..10 {
| ^^^^^
|
help: consider using an iterator
help: consider using an iterator and enumerate
|
LL | for (i, <item>) in vec.iter().enumerate().take(10).skip(5) {
| ~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@ -148,7 +148,7 @@ error: the loop variable `i` is used to index `vec`
LL | for i in 0..vec.len() {
| ^^^^^^^^^^^^
|
help: consider using an iterator
help: consider using an iterator and enumerate
|
LL | for (i, <item>) in vec.iter_mut().enumerate() {
| ~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~