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Subject: Conditional inserts in inject
From: David Heinemeier Hansson <david@ u h k g o
Date: Tue, 9 Sep 2003 01:23:21 +0900

Consider:

%w{ one two three }.inject(Array.new) { |a, e| a << e if e != "three" }

I would have expected that to return:

[ "one", "two" ]

Instead it returns nil.

What am I missing? Or isn't it possible to use conditions in an inject 
expression? If not, how would one go about archiving the same?


/ David