Beefy Boxes and Bandwidth Generously Provided by pair Networks
laziness, impatience, and hubris
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??
Something like this?

package StringObject; use strict; use warnings; use overload q{""} => \&to_string; sub new { my ($class, $string) = @_; return bless \$string, $class; } sub s { my ($self, $match, $substitute) = @_; $$self =~ s/$match/$substitute/; return $self; } sub to_string { my ($self) = @_; return $$self; } 1;

Quick inspection tests:

use strict; use warnings; use StringObject; my $s1 = StringObject->new("the boy walked the dog"); print $s1, "\n"; $s1->s('walked', 'fed')->s('boy', 'girl')->s('dog', 'Audrey II'); print $s1, "\n"; exit;

You'd probably want to overload the other stringy functions (comparisons, concat) as well to make the semantics consistent.

As written, this won't handle backreferences in the replacement string. There are probably other limitations. I personally don't see a lot of benefits to this substitution chaining idiom in the first place, but I thought it might be fun to show an example of blessing something other than a hashref.

        $perlmonks{seattlejohn} = 'John Clyman';


In reply to Re: Chaining string ops by seattlejohn
in thread Chaining string ops by traveler

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



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

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

How do I use this?Last hourOther CB clients
Other Users?
Others cooling their heels in the Monastery: (5)
As of 2024-03-29 10:17 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found