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Make Style/ZeroLengthPredicate aware of array.length.zero? #11327

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koic
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@koic koic commented Dec 24, 2022

Closes #11314.

Follow #11314 (comment).

This PR makes Style/ZeroLengthPredicate aware of array.length.zero?.

I'm not sure if array.any? is better than array.length.positive as answered in #11314.
But array.length == 0 and array.length.zero? are equivalent, it should be possible to convert to array.emtpy? in the same way.


Before submitting the PR make sure the following are checked:

  • The PR relates to only one subject with a clear title and description in grammatically correct, complete sentences.
  • Wrote good commit messages.
  • Commit message starts with [Fix #issue-number] (if the related issue exists).
  • Feature branch is up-to-date with master (if not - rebase it).
  • Squashed related commits together.
  • Added tests.
  • Ran bundle exec rake default. It executes all tests and runs RuboCop on its own code.
  • Added an entry (file) to the changelog folder named {change_type}_{change_description}.md if the new code introduces user-observable changes. See changelog entry format for details.

Closes rubocop#11314.

Follow rubocop#11314 (comment).

This PR makes `Style/ZeroLengthPredicate` aware of `array.length.zero?`.

I'm not sure if `array.any?` is better than `array.length.positive`
as answered in rubocop#11314.

But `array.length == 0` and `array.length.zero?` are equivalent,
it should be possible to convert to `array.emtpy?` in the same way.
@bbatsov
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bbatsov commented Dec 24, 2022

Nice improvement. Thanks!

@koic koic deleted the make_style_zero_length_predicate_aware_of_zero branch December 24, 2022 09:59
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Improved "fix" for Style/NumericPredicate: Use changes.size.positive? instead of changes.size > 0.
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