[93] pry(main)> class Range
[93] pry(main)*   def include_r?(x)[93] pry(main)*     if(self.begin <= x.begin )&&( self.end >= x.end); return true; else return false; end
[93] pry(main)*   end
[93] pry(main)* end
=> nil
[94] pry(main)> 1..100
=> 1..100
[95] pry(main)> _.include_r?(2..67)
=> true