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Diffstat (limited to 'src/docs/index_refutable_slice.txt')
| -rw-r--r-- | src/docs/index_refutable_slice.txt | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/src/docs/index_refutable_slice.txt b/src/docs/index_refutable_slice.txt deleted file mode 100644 index 8a7d52761af..00000000000 --- a/src/docs/index_refutable_slice.txt +++ /dev/null @@ -1,29 +0,0 @@ -### What it does -The lint checks for slice bindings in patterns that are only used to -access individual slice values. - -### Why is this bad? -Accessing slice values using indices can lead to panics. Using refutable -patterns can avoid these. Binding to individual values also improves the -readability as they can be named. - -### Limitations -This lint currently only checks for immutable access inside `if let` -patterns. - -### Example -``` -let slice: Option<&[u32]> = Some(&[1, 2, 3]); - -if let Some(slice) = slice { - println!("{}", slice[0]); -} -``` -Use instead: -``` -let slice: Option<&[u32]> = Some(&[1, 2, 3]); - -if let Some(&[first, ..]) = slice { - println!("{}", first); -} -``` \ No newline at end of file |
