Chapter 4

	class Lax < Enumerator
	# previously defined methods go here

	def select(&block)
	Lax.new(self) do \|yielder, val\|
	yielder << val if block.call(val)
	end
	end

	end

This one is slightly more challenging, but resembles Lax#take:

	class Lax < Enumerator

	# previously defined methods go here

	def drop(n)
	dropped = 0
	Lax.new(self) do \|yielder, val\|
	if dropped < n
	dropped += 1
	else
	yielder << val
	end
	end
	end

	end

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Table of Contents for Chapter 4