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Diffstat (limited to 'src/tools/clippy/src/docs/reversed_empty_ranges.txt')
-rw-r--r-- | src/tools/clippy/src/docs/reversed_empty_ranges.txt | 26 |
1 files changed, 0 insertions, 26 deletions
diff --git a/src/tools/clippy/src/docs/reversed_empty_ranges.txt b/src/tools/clippy/src/docs/reversed_empty_ranges.txt deleted file mode 100644 index 39f481193..000000000 --- a/src/tools/clippy/src/docs/reversed_empty_ranges.txt +++ /dev/null @@ -1,26 +0,0 @@ -### What it does -Checks for range expressions `x..y` where both `x` and `y` -are constant and `x` is greater or equal to `y`. - -### Why is this bad? -Empty ranges yield no values so iterating them is a no-op. -Moreover, trying to use a reversed range to index a slice will panic at run-time. - -### Example -``` -fn main() { - (10..=0).for_each(|x| println!("{}", x)); - - let arr = [1, 2, 3, 4, 5]; - let sub = &arr[3..1]; -} -``` -Use instead: -``` -fn main() { - (0..=10).rev().for_each(|x| println!("{}", x)); - - let arr = [1, 2, 3, 4, 5]; - let sub = &arr[1..3]; -} -```
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