Comments on: The Flip-Flop operator

By: Logger

Logger — Mon, 23 Jan 2012 15:35:55 +0000

any example show the diffrence
between ff and fff ?

By: perlpilot

perlpilot — Fri, 09 Dec 2011 04:27:37 +0000

You are correct. It is just like the Perl 5 flip-flop in this respect. I don’t know what I was thinking when I wrote that. :-)

By: microtherion

microtherion — Thu, 08 Dec 2011 22:34:01 +0000

Hmm, is it really true that “Both the right hand side of the flip-flop ($_ == 9) and left hand side of the flip-flop ($_ == 13) are evaluated on each iteration of the loop.” ?

I would have thought that at least the RHS is only evaluated when the state is true (And possibly that the LHS is only evaluated when the state is false?)

By: perlpilot

perlpilot — Tue, 06 Dec 2011 21:37:14 +0000

Mere moments ago, I noticed that jnthn added a preliminary implementation for flip-flop to Rakudo. I haven’t tried it yet, but presumably, if you obtain the latest sources from git and build Rakudo, you should have flip-flop.

jnthn++

By: perlpilot

perlpilot — Tue, 06 Dec 2011 17:40:40 +0000

Flip-flop isn’t implememented in Rakudo yet, but it is implemented in Niecza. I should have mentioned that.

By: Gernot

Gernot — Tue, 06 Dec 2011 09:40:05 +0000

Nice, but flipflop operators are not yet implemented in Rakudo Nom :-(-

By: Software Enhanced Politics: Perl Flip-Flop : The Other McCain

Software Enhanced Politics: Perl Flip-Flop : The Other McCain — Mon, 05 Dec 2011 17:32:48 +0000

[...] more than most other languages with which you’d care to tangle. The subject of the post is the flip-flop operator, which has massive political application.Perl 5 has a binary operator called flip-flop that is [...]