Beefy Boxes and Bandwidth Generously Provided by pair Networks
good chemistry is complicated,
and a little bit messy -LW
 
PerlMonks  

Comment on

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

For tidiness, I want to store a bunch of regular expressions outside of a script, but I can't work out how to get interpolation of the replace string correct. Here's a simple example:

#!/usr/bin/perl use strict; use warnings; # works as expected my $text = 'Hello world'; $text=~ s/(\w+)/$1 Perl/; print "Regular regex: $text\n"; # but now try with variable interpolation my $text2 = 'Hello world'; my $match = qr/(\w+)/; my $replace = '$1 Perl'; $text2 =~ s/$match/$replace/e; # not what I want print "Interpolated regex: $text2\n";

I won't bore you with all the variations I've tried so far, but I've been playing with this for an hour (including qr and different modifiers) and it's driving me crazy. Any ideas?


In reply to Regular expression "replace string interpolation" problem by cLive ;-)

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 making s'mores by the fire in the courtyard of the Monastery: (5)
    As of 2014-11-28 01:56 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      My preferred Perl binaries come from:














      Results (191 votes), past polls