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Postings from October 2014
Currently, even with one item in its list, join($sep, $list) will stringify the separator. Is it acceptable to change this such that $sep does not get stringified in that case (for the sake of optimisa- tions)? We don't promise this anywhere, do we? (As a case in point, s/// may or may not evaluate the rhs multiple times. Only undef and tied values exhibit the difference. We pick one or the other based on what optimisations are possible, and it has changed between versions.)Thread Next