From: James Edward Gray II <james@...>
Date: 2006-06-20T23:17:23+09:00
Subject: uniq() Oddity

Would someone please explain this behavior to me?

   a = [ { :foo => :bar }, { :foo => :bar } ]

   p a            #=> [{:foo=>:bar}, {:foo=>:bar}]
   p a[0] == a[1] #=> true
   # why does this next call do nothing?
   p a.uniq       #=> [{:foo=>:bar}, {:foo=>:bar}]

   # inefficient work-around
   p a.inject([]) { |cp, e| cp.include?(e) ? cp : cp << e } #=>  
[{:foo=>:bar}]

James Edward Gray II