Beefy Boxes and Bandwidth Generously Provided by pair Networks
The stupid question is the question not asked
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
I0,

You have no base clase case for your recursion. When you get down to the bottom call, you try to execute "func xxx returns y". Try this (tip to stephen for cleaning it up):

#!/usr/bin/perl -wd use strict; print doFunc( "MAIN", "B(1)+C(2)" ); sub doFunc{ my ($theFunc, $rem) = @_; my $re = &get_re($rem); if( $rem ne $re ) { $rem =~ s/(\w+)\(($re)\)/doFunc($1,$2)/eg; } return "func $theFunc rets $rem"; } ## ## When we're called with the initial ## state, return "1|2". Otherwise, return ## our input, quotemeta'd. ## sub get_re { my ($in) = @_; if ($in eq "B(1)+C(2)") { return '1|2'; } else { return quotemeta($in); } }

-derby

update: There's a base case and a base class (no relation) but base clase?

update: Just spent a few minutes with your original. Here's it is with the base case added:

print doFunc( "MAIN", "B(1)+C(2)" ); sub doFunc{ my $theFunc = shift; local $_ = shift; my $re; $re = ${{ "B(1)+C(2)" => '1|2', }}{$_}||quotemeta; print "$theFunc: '$_'=~/$re/\n"; print join"\n",/(\w+)\(($re)\)/g,"\n"; if( $_ ne $re ) { $_ =~ s/(\w+)\(($re)\)/&doFunc($1,$2)/eg; # /ego works /eg fails } return "func $theFunc returns <$_>"; }

In reply to Re: recursive /eg fails by derby
in thread recursive /eg fails by I0

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others taking refuge in the Monastery: (10)
    As of 2014-08-27 23:24 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The best computer themed movie is:











      Results (253 votes), past polls