[Omaha.pm] Substitution loop

[Jay Hannah]

On Jul 31, 2007, at 2:38 PM, Andy Lester wrote:
> Sure.  The /g is a modifier saying "do this on everything throughout
> the string".  In this case, it's removing every non-digit character
> from the string.
>
> It would be even better to have it as
>
>     $dl =~ s/[^\d]+//g;
>
> That way if you have a string of ten non-digits, they'll all get
> removed at once, rather via ten checks.
>
> You can also use the tr/// operator for this sort of thing, if you  
> want.

Yes, those are great tips. Thanks!

But what is a fatal "Substitution loop" error from Perl?

I've never seen that one before. It disappeared without me changing  
anything and I can't make it happen again.

Probably user error.   :)

j