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Diffstat (limited to 'src/tools/clippy/src/docs/as_underscore.txt')
-rw-r--r-- | src/tools/clippy/src/docs/as_underscore.txt | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/tools/clippy/src/docs/as_underscore.txt b/src/tools/clippy/src/docs/as_underscore.txt new file mode 100644 index 000000000..2d9b0c358 --- /dev/null +++ b/src/tools/clippy/src/docs/as_underscore.txt @@ -0,0 +1,21 @@ +### What it does +Check for the usage of `as _` conversion using inferred type. + +### Why is this bad? +The conversion might include lossy conversion and dangerous cast that might go +undetected due to the type being inferred. + +The lint is allowed by default as using `_` is less wordy than always specifying the type. + +### Example +``` +fn foo(n: usize) {} +let n: u16 = 256; +foo(n as _); +``` +Use instead: +``` +fn foo(n: usize) {} +let n: u16 = 256; +foo(n as usize); +```
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