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All the Perl that's Practical to Extract and Report
about I/O disciplines and I should retire to the Tassili-in-Aijer
mountains in Sahara as a camel herder :-)
-- Jarkko Hietaniemi
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One level too-removed (Score:1)
I'm biased - I wrote UNIVERSAL::ref. I think you should be writing $thing->is_array instead of ref($thing)->is_array or Scalar::Util::reftype($thing)->is_array. That is, the thing itself should be responsible for telling you about itself and not some external bit of code.
I trend toward the Smalltalk end of the idea spectrum and I'd prefer that $thing be able to respond for itself. Outsourcing introspection prevents $thing from being able to intelligently decide to answer the question *differently*