I'd do it the third way, $select_dfn .= join ', ', @columns, ''; Preference for the styles you show is a matter of taste between procedural and functional. Benchmarking might show a reason to choose between them in a particular language (like Perl).

After Compline,
Zaxo

In reply to Re: Scalar assignment with loop iterator considered bad? by Zaxo
in thread Scalar assignment with loop iterator considered bad? by jacques

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