class RuboCop::Cop::Performance::RangeInclude
This cop identifies uses of `Range#include?`, which iterates over each item in a `Range` to see if a specified item is there. In contrast, `Range#cover?` simply compares the target item with the beginning and end points of the `Range`. In a great majority of cases, this is what is wanted.
This cop is `Safe: false` by default because `Range#include?` and `Range#cover?` are not equivalent behaviour.
@example
# bad ('a'..'z').include?('b') # => true # good ('a'..'z').cover?('b') # => true # Example of a case where `Range#cover?` may not provide # the desired result: ('a'..'z').cover?('yellow') # => true
Constants
- MSG
Public Instance Methods
autocorrect(node)
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# File lib/rubocop/cop/performance/range_include.rb, line 44 def autocorrect(node) ->(corrector) { corrector.replace(node.loc.selector, 'cover?') } end
on_send(node)
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# File lib/rubocop/cop/performance/range_include.rb, line 38 def on_send(node) return unless range_include(node) add_offense(node, location: :selector) end