I think we had this discussion already...

I do not see how that changes the advice. There are ways to avoid some of the errors (disregarding if that is good practice), but the self-documenting part is still true.

I wonder how is this relevant

It isn't. Hence the introductory, "As an aside".

In reply to Re^3: DBI::CSV using a variable to request columns by chacham
in thread DBI::CSV using a variable to request columns by Sandy_Bio_Perl

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