Re: Regex match variables, threads, and recursion

duff@cbi.tamucc.edu wrote
> Interesting.  I've never expected $1 et alia to be lexical and I've
> always treated them as equivalent to "volatile" as in C.  Their values
> can change at any time, if you need to keep them around for any
> reason, store them somewhere.

I've never expected them to be lexical, if only because they're
explicitly defined to be localised.    So code like the following
"does the right thing":

             sub doit { print "$1\n" };
             'abc' =~ /(b)/;
             doit();

Not that I've ever had any desire to write any such code.   Having $1
and co as lexicals would undoubtedly be "better", but the compatibility
issues would have to be addressed.


Mike Guy

• Regex match variables, threads, and recursion by Dan Sugalski
• Re: Regex match variables, threads, and recursion by M.J.T. Guy
• Re: Regex match variables, threads, and recursion by Mark-Jason Dominus
• Re: Regex match variables, threads, and recursion by Gurusamy Sarathy
• Re: Regex match variables, threads, and recursion by Gurusamy Sarathy
• Re: Regex match variables, threads, and recursion by Ilya Zakharevich
• Re: Regex match variables, threads, and recursion by Hugo
• Re: Regex match variables, threads, and recursion by Ilya Zakharevich
• Re: Regex match variables, threads, and recursion by Gurusamy Sarathy
• Re: Regex match variables, threads, and recursion by Ilya Zakharevich
• Re: Regex match variables, threads, and recursion by Gurusamy Sarathy
• Re: Regex match variables, threads, and recursion by Ilya Zakharevich
• Re: Regex match variables, threads, and recursion by Larry Wall
• Re: Regex match variables, threads, and recursion by duff
• Report 19079 by H.Merijn Brand