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Diffstat (limited to 'src/tools/clippy/src/docs/redundant_closure.txt')
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diff --git a/src/tools/clippy/src/docs/redundant_closure.txt b/src/tools/clippy/src/docs/redundant_closure.txt new file mode 100644 index 000000000..0faa9513f --- /dev/null +++ b/src/tools/clippy/src/docs/redundant_closure.txt @@ -0,0 +1,25 @@ +### What it does +Checks for closures which just call another function where +the function can be called directly. `unsafe` functions or calls where types +get adjusted are ignored. + +### Why is this bad? +Needlessly creating a closure adds code for no benefit +and gives the optimizer more work. + +### Known problems +If creating the closure inside the closure has a side- +effect then moving the closure creation out will change when that side- +effect runs. +See [#1439](https://github.com/rust-lang/rust-clippy/issues/1439) for more details. + +### Example +``` +xs.map(|x| foo(x)) +``` + +Use instead: +``` +// where `foo(_)` is a plain function that takes the exact argument type of `x`. +xs.map(foo) +```
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