As always, when in doubt Benchmark. But the substitution's likely going to be the quickest as it won't have the overhead of building the temporary array @contents that's (presumably) thrown away after the join is done.

In reply to Re: Is one form of character substitution better than the other, and if so, why? by Fletch
in thread Is one form of character substitution better than the other, and if so, why? by OfficeLinebacker

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