How to get integer value while adding new method to Integer class

Question

I want to add new method to Integer class, but I have no idea how to access integer value in this method:

class Integer
  def foo
    'foo' * value
  end
end

It should work like:

3.foo
=> 'foofoofoo'

This is not particular to integers, by the way. self always references the receiver, not just in integers. — Jörg W Mittag
– Jörg W Mittag, Commented Oct 9, 2017 at 20:10

Sagar Pandya · Accepted Answer · 2017-12-05 01:12:04Z

5

Using self:

class Integer
  def foo
    'foo' * self
  end
end
#It should work like:

p 3.foo
#=> 'foofoofoo'

You can also use Kernel#__method__ for a more general approach:

class Integer
  def foo
    __method__.to_s * self
  end
end

p 3.foo
#=> 'foofoofoo'

answered Oct 9, 2017 at 16:44

Sagar Pandya

9,5282 gold badges28 silver badges38 bronze badges

Sign up to request clarification or add additional context in comments.

1 Answer 1