Mega Code Archive

 

Categories / Ruby / Number

 

Simulating a Subclass of Fixnum

require 'delegate' class HexNumber < DelegateClass(Fixnum)   # The string representations of this class are hexadecimal numbers.   def to_s     sign = self < 0 ? "-" : ""     hex = abs.to_s(16)     "#{sign}0x#{hex}"   end   def inspect     to_s   end end HexNumber.new(10)                             # => 0xa HexNumber.new(-10)                            # => -0xa HexNumber.new(1000000)                        # => 0xf4240 HexNumber.new(1024 ** 10)                     # => 0x10000000000000000000000000 HexNumber.new(10).succ                        # => 11 HexNumber.new(10) * 2                         # => 20