Contents

unless Enumerable.method_defined? :take_last_while?
  module Enumerable
    # Take the last n elements of an enumerable meeting a certain predicate.
    #
    # @return [Array] an array containing the matching elements
    #
    # @example
    #   [1, 2, 3, 5].take_last_while(&:odd?) #=> [5, 3]
    def take_last_while
      return to_enum(:take_last_while) unless block_given?

      array = []
      reverse_each do |elem|
        return array unless yield(elem)
        array << elem
      end

      array
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
powerpack-0.0.6	lib/powerpack/enumerable/take_last_while.rb