Re: [FWP] IP address regex golf

[Rick Delaney <rick.delaney@home.com>]

Jeff Pinyan wrote:
> 
> On Apr 29, Rick Delaney said:
> 
> >Jeff Pinyan wrote:
> >>
> >> A different flavor of the beast:
> >>
> >>     do{$1>255||$b++>3and$a=1while/\G(\d+)(\.|$)/g;!$a};
> >
> >    4==grep $_<256,/\G(\d+)(?:\.|$)/g;
> >    4==grep $_<256,/\G(\d+)(?:\.|\z)/g;
> 
> Hooray!  Someone went with my idea.  

\G is just too much fun to resist.  :-)

> Sigh, if only there was some variant of grep() that does what Tom 
> (or was it Larry) said would be like a first() function...

I don't see that would help here. i.e.

    !grep $_>255,/\G(\d+)(?:\.|\z)/g;

isn't correct since it will return true for random garbage.  But perhaps
you had something else in mind.

-- 
Rick Delaney
rick.delaney@home.com

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