I know of Schwern's Sex, but what the two modules do is different.

My Merge creates a package whose @ISA is a list I specify.

Sex creates a package by mixing up symbol table entries, both subs and variables, and (by the way) pushing the "parents" into the "child"'s @ISA.

My first solution was a simplification of Sex (with less error checking, no schwernian messages, and no randomness), but it creates problem with classes, and makes it impossible to use NEXT to add functionality to a method, in something like:

package a;
sub method {
 my $self=shift;
 # do something
}

package b;
use NEXT;
sub method {
 my $self=shift;
 # do something before
 $self->NEXT::method(@_); # do the normal stuff
 # do something after
}

package main;
require a;require b;
use Merge qw(b a)=>'c';

$c=new c;$c->method; # will call "b"'s implemetation, which will call 
+"a"'s via NEXT

[download]

In reply to Re: Re: A module to merge packages by dakkar
in thread A module to merge packages by dakkar

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!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • 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, details, 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, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            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.