Contents

class Array
  def subtract(other)
    self.select do |item|
      !other.has?(item)
    end
  end

  def has?(something)
    self.each do |item|
      return true if item == something
    end
    false
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
sub-0.3.0	lib/sub/array.rb
sub-0.4.0	lib/sub/array.rb
sub-0.4.2	lib/sub/array.rb
sub-0.4.1	lib/sub/array.rb