# File lib/packet/double_keyed_hash.rb, line 19
    def delete(key)
      t_key = @keys1[key]
      if t_key
        @keys1.delete(key)
        @internal_hash.delete(t_key)
      else
        @keys1.delete_if { |key,value| value == key }
        @internal_hash.delete(key)
      end
    end