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Correct documentation for len_zero

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This commit is contained in:
Yuki Okushi 2019-12-25 21:06:55 +09:00
parent a68ef55dbf
commit ad936389e1
1 changed files with 3 additions and 4 deletions
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7
clippy_lints/src/len_zero.rs
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@ -15,10 +15,9 @@ declare_clippy_lint! {
/// just to compare to zero, and suggests using `.is_empty()` where applicable.
///
/// **Why is this bad?** Some structures can answer `.is_empty()` much faster
/// than calculating their length. Notably, for slices, getting the length
/// requires a subtraction whereas `.is_empty()` is just a comparison. So it is
/// good to get into the habit of using `.is_empty()`, and having it is cheap.
/// Besides, it makes the intent clearer than a manual comparison.
/// than calculating their length. So it is good to get into the habit of using
/// `.is_empty()`, and having it is cheap.
/// Besides, it makes the intent clearer than a manual comparison in some contexts.
///
/// **Known problems:** None.
///