Well, *I* never use it, because I have to run  man perlop every time I see one, but...

In scalar context, ``..'' returns a boolean value. The operator is bistable, like a flip-flop ... It can test the right operand and become false on the same evaluation it became true (as in awk), but it still returns true once.

Anybody who can get it to work, though? I can't get what I expect from, e.g.

 $\ = ', '; for (1..10) { print if (1..0) }

Rhandom is right, revising the algorithm is likely the way to go, but I'd like to learn how to use this as a cool way to write "the first time..."

In reply to Re: A TRUE-once variable by baku
in thread A TRUE-once variable by gmax

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