Eh, no, you completely misunderstand the purpose of perlstyle. Perlstyle lists Larry's preferences of how he codes. And there's only one thing he strongly cares about - which isn't the map issue. The remark you quote is listed under Here are some other more substantive style issues to think about.

It's telling you to think about map/grep in void context - not ordering you to avoid it. But what's more important is the reasoning - it's referring to the fact that map in void context is expensive. And it was - at the time perlstyle was written. But perlstyle was written many years ago, long before the map issue was fixed. It's fixed now, so there's nothing left over from the reasoning in perlstyle.

In reply to Re^7: modify the contents of an array by Anonymous Monk
in thread modify the contents of an array by s_gaurav1091

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