Thanks for the feedback.

But I'm comfortable using map, and I don't see anything wrong with using it in void context.

Here's a node I would refer you to:  is the use of map in a void context deprecated ?, which elaborates further.  In it, liz says: 

...I seem to recall that map was just rewritten to check for void
context and avoid the extra work if possible.

    That is correct. And it's in Perl 5.8.1!
    From the 5.8.1. perldelta:

        "map" in void context is no longer expensive. "map" is now
        context aware, and will not construct a list if called in
        void context.

[download]

And I particularly like Abigail-II's reply:  "Think for yourself.", as well as Abigail-II's many successive comments in the thread.

Update::  I also have to mention BrowserUk's final word in the thread, which links to this: 

Larry Wall (<larry {at} wall.org>)
Re: grep/map in void context
perl.porters-gw

The argument against using an operator for other than its primary
purpose strikes me the same as the old argument that you shouldn't
have sex for other than procreational purposes.  Sometimes side
effects are more enjoyable than the originally intended effect.

[download]
s''(q.S:$/9=(T1';s;(..)(..);$..=substr+crypt($1,$2),2,3;eg;print$..$/

In reply to Re^2: Adventures in Debugging a Perl/Tk Game by liverpole
in thread Adventures in Debugging a Perl/Tk Game by liverpole

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