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* Optional identity for Enumerable#sum defaults to zero. Closes #5657.Jeremy Kemper2006-07-091-1/+7
* r4487@asus: jeremy | 2006-04-29 12:21:39 -0700Jeremy Kemper2006-07-081-4/+2
* Enumerable#sum without blocks. Closes #5505. Don't assume 0 identity for sum.Jeremy Kemper2006-06-251-3/+23
* Add Enumerable#index_byNicholas Seckar2006-06-241-0/+10
* Added Enumerable#sum for calculating a sum from the elements [DHH]David Heinemeier Hansson2006-06-241-1/+8
* Remove Enumerable#first_match in favor of using break(result_for_each)Nicholas Seckar2006-05-211-10/+0
* Add Enumerable#group_by and Array#in_groups_ofMarcel Molina2006-03-011-1/+16
* Added Enumerable#first_matchNicholas Seckar2005-10-141-0/+15