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Documented constant expression evaluation for repeat_once #7482

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Jul 24, 2021
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Documented constant expression evaluation for repeat_once #7482

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6 changes: 5 additions & 1 deletion clippy_lints/src/repeat_once.rs
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Expand Up @@ -16,7 +16,11 @@ declare_clippy_lint! {
/// - `.clone()` for `String`
/// - `.to_vec()` for `slice`
///
/// **Why is this bad?** For example, `String.repeat(1)` is equivalent to `.clone()`. If cloning the string is the intention behind this, `clone()` should be used.
/// The lint will evaluate constant expressions and values as arguments of `.repeat(..)` and emit a message if
/// they are equivalent to `1`. (Related discussion in [rust-clippy#7306](https://github.com/rust-lang/rust-clippy/issues/7306))
///
/// **Why is this bad?** For example, `String.repeat(1)` is equivalent to `.clone()`. If cloning
/// the string is the intention behind this, `clone()` should be used.
///
/// **Known problems:** None.
///
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