Your code will break if execution ever proceeds past the my(@o) line. That is, if you put a foo() call at the end of your script. It is always bad style to use my() variables with (?{...}) and (??{...}). Don't do it.

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In reply to Re^5: Multiple uses of (?{ code }) do not appear to be called by diotalevi
in thread Multiple uses of (?{ code }) do not appear to be called by bsdz

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