Interesting method. The bad news is that it can only be used once (try princepawn's test case, setting @d = qw/a a a a a a a/). But the good news is that it can be reduced to 18 :) 
sub all_eq {
  (@_{@_}=1)==keys%_
}

[download]
update: 17 chars... 
  @_{@_}=0;keys%_<2

[download]
   MeowChow                                   
               s aamecha.s a..a\u$&owag.print

In reply to Re: Re: Golf Challenge: all elements of an array equal by MeowChow
in thread Golf Challenge: all elements of an array equal by princepawn

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