in reply to Re: Flip-flop won't DWIM
in thread Flip-flop won't DWIM

So use the match-once operator (no need for an actual pattern; the empty pattern works fine): 
print join ' ', grep scalar(??../D/), ('A'..'F');

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Re^3: Flip-flop won't DWIM
by wu-lee (Beadle) on May 22, 2009 at 10:54 UTC
    Aha! Finally, a use for the match-once operator! And it seems to be tailor made for this problem. Bravo!
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