From 29096268ccce2b13e1490c8b673ffe0b498555fc Mon Sep 17 00:00:00 2001 From: Marc-Andre Lafortune Date: Tue, 14 Apr 2009 01:12:55 -0400 Subject: Enumerable#sum now works will all enumerables, even if they don't respond to :size [#2489 state:committed] Signed-off-by: Jeremy Kemper --- activesupport/lib/active_support/core_ext/enumerable.rb | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'activesupport/lib/active_support/core_ext/enumerable.rb') diff --git a/activesupport/lib/active_support/core_ext/enumerable.rb b/activesupport/lib/active_support/core_ext/enumerable.rb index 434a32b29b..e89b7e392e 100644 --- a/activesupport/lib/active_support/core_ext/enumerable.rb +++ b/activesupport/lib/active_support/core_ext/enumerable.rb @@ -55,12 +55,10 @@ module Enumerable # [].sum(Payment.new(0)) { |i| i.amount } # => Payment.new(0) # def sum(identity = 0, &block) - return identity unless size > 0 - if block_given? - map(&block).sum + map(&block).sum(identity) else - inject { |sum, element| sum + element } + inject { |sum, element| sum + element } || identity end end -- cgit v1.2.3