split_between.rb

#!/usr/bin/ruby -wKu
# vim: set fileencoding=utf-8 :
=begin
return the results of both Enumerable#take and Enumerable#drop
=end

module Enumerable
  def split_between val
    first = true
    first_ary = []
    second_ary = []
    self.each{|e|
      if first
        first_ary << e
        first = false if e == val
      else
        second_ary << e
      end
    }
    [first_ary, second_ary]
  end
  def split_between_if &block
    first = true
    first_ary = []
    second_ary = []
    self.each{|e|
      if first
        if yield(e)
          first_ary << e
        else
          first = false
          second_ary << e
        end
      else
        second_ary << e
      end
    }
    [first_ary, second_ary]
  end
end