Comment by chao-

There is a bit of personal preference in what "applies to a number", but I see what you mean.

As a slight correction, a block is indeed an object! They are received by methods as an instance of the Proc class:

  def inspects_block(&block)
    puts block
    puts block.class
  end
  inspects_block { "foo" }
  # => #<Proc:0x0000000000000000>
  # => Proc

You can even add a 'repeat' method to these in the way that you specified, although you will need to add '->' to declare the block (as a lambda, which is also just an instance of Proc) before you call #repeat on it:

  class Proc
    def repeat(n)
      n.times { self.call }
    end
  end
  ->{ puts("foo") }.repeat(3)
  # => foo
  # => foo
  # => foo