A generic smaller/bigger implementation, for things like infinite ranges etc.

examples.rb

(1..Bigger).first(5) # => [1, 2, 3, 4, 5]

smaller_bigger.rb

Bigger = Object.new
Bigger.extend Comparable
def Bigger.inspect; "#<Bigger>"; end
def Bigger.<=>(other); equal?(other) ? 0 : 1; end
def Bigger.coerce(other); [Smaller, self]; end

Smaller = Object.new
Smaller.extend Comparable
def Smaller.inspect; "#<Smaller>"; end
def Smaller.<=>(other); equal?(other) ? 0 : -1; end
def Smaller.coerce(other); [Bigger, self]; end