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Old 05-03-2010, 11:33 AM
Dominic Hargreaves
 
Default Bug#580058: ITP: libclass-isa-perl -- report the search path for a class's ISA tree

Package: wnpp
Severity: wishlist
Owner: Dominic Hargreaves <dom@earth.li>

* Package name : libclass-isa-perl
Version : 0.36
Upstream Author : Sean M. Burke <sburke@cpan.org>
* URL : http://search.cpan.org/dist/Class-ISA/
* License : Perl
Programming Lang: Perl
Description : report the search path for a class's ISA tree

Suppose you have a class (like Food::Fish::Fishstick) that is derived,
via its @ISA, from one or more superclasses (as Food::Fish::Fishstick is
from Food::Fish, Life::Fungus, and Chemicals), and some of those
superclasses may themselves each be derived, via its @ISA, from one or
more superclasses (as above).

When, then, you call a method in that class ($fishstick->calories), Perl
first searches there for that method, but if it's not there, it goes
searching in its superclasses, and so on, in a depth-first (or maybe
"height-first" is the word) search. In the above example, it'd first look
in Food::Fish, then Food, then Matter, then Life::Fungus, then Life, then
Chemicals.

This library, Class::ISA, provides functions that return that list -- the
list (in order) of names of classes Perl would search to find a method,
with no duplicates.



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