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Diffstat (limited to 'src/tools/clippy/src/docs/string_to_string.txt')
-rw-r--r-- | src/tools/clippy/src/docs/string_to_string.txt | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/tools/clippy/src/docs/string_to_string.txt b/src/tools/clippy/src/docs/string_to_string.txt new file mode 100644 index 000000000..deb7eebe7 --- /dev/null +++ b/src/tools/clippy/src/docs/string_to_string.txt @@ -0,0 +1,19 @@ +### What it does +This lint checks for `.to_string()` method calls on values of type `String`. + +### Why is this bad? +The `to_string` method is also used on other types to convert them to a string. +When called on a `String` it only clones the `String`, which can be better expressed with `.clone()`. + +### Example +``` +// example code where clippy issues a warning +let msg = String::from("Hello World"); +let _ = msg.to_string(); +``` +Use instead: +``` +// example code which does not raise clippy warning +let msg = String::from("Hello World"); +let _ = msg.clone(); +```
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