From: Bruce Williams <bruce@...>
Date: 2002-09-04T08:04:25+09:00
Subject: Grouping an Array

I find myself using the following snippet often when grouping an Array into 
smaller arrays of [less than or equal to] a certain number for various 
purposes.

class Array
	def group threshold
		result = []
		self.each do |item|
			begin
				result << [] if result.last.length == threshold
			rescue NameError
				result << []
			end
			result.last << item
		end
		result
	end
end

This allows me to do the following:

irb(main):002:0> [1,2,3,4,5,6,7,8,9,10].group 3
[[1, 2, 3], [4, 5, 6], [7, 8, 9], [10]]

Is there a better way to do this?

- B

-- 
Bruce Williams		http://www.codedbliss.com
iusris/#ruby-lang		bruce@codedbliss.com