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-rw-r--r-- | src/tools/clippy/src/docs/needless_bitwise_bool.txt | 22 |
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diff --git a/src/tools/clippy/src/docs/needless_bitwise_bool.txt b/src/tools/clippy/src/docs/needless_bitwise_bool.txt new file mode 100644 index 000000000..fcd7b730a --- /dev/null +++ b/src/tools/clippy/src/docs/needless_bitwise_bool.txt @@ -0,0 +1,22 @@ +### What it does +Checks for uses of bitwise and/or operators between booleans, where performance may be improved by using +a lazy and. + +### Why is this bad? +The bitwise operators do not support short-circuiting, so it may hinder code performance. +Additionally, boolean logic "masked" as bitwise logic is not caught by lints like `unnecessary_fold` + +### Known problems +This lint evaluates only when the right side is determined to have no side effects. At this time, that +determination is quite conservative. + +### Example +``` +let (x,y) = (true, false); +if x & !y {} // where both x and y are booleans +``` +Use instead: +``` +let (x,y) = (true, false); +if x && !y {} +```
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