gistfile1.rb

#define a fibonacci enumerator
fibonacci = Enumerator.new do |yielder|
	a = b = 1
	loop do
		yielder << a
		a, b = b, a + b
	end
end

#curry cache to infinity
cache = (0..Float::INFINITY).lazy.map { |x| fibonacci(x) }
nth_from_list = lambda { |ary, n| ary[n] }
nth_fib = nth_from_list.curry[cache]

#list the first 100
puts fibonacci.take(100)