This is a problem with the Perl mindset. DWIM has no value when "Do What I Mean" means different things to different people. Hence, there should be well defined concepts mandating that methods that normally output an array shouldn't do things that vary behavior based on the LHS. Most languages don't have return-type overloading with the same arguments, and I consider this a good thing. Perl, somehow, thinks it is different. I love Perl, but I don't believe in covering for it's faults -- or saying that the faults are really DWIMerry or features.
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