Ruby Language Monkey Patching in Ruby Adding Functionality
Example
You can add a method to any class in Ruby, whether it's a builtin or not. The calling object is referenced using self.
class Fixnum
def plus_one
self + 1
end
def plus(num)
self + num
end
def concat_one
self.to_s + '1'
end
end
1.plus_one # => 2
3.plus(5) # => 8
6.concat_one # => '61'
