perl/perl-Class-ISA: Added (search path for class's ISA tree).

Signed-off-by: David Spencer <idlemoor@slackbuilds.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/perl/perl-Class-ISA/README b/perl/perl-Class-ISA/README
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+perl-Class-ISA
+
+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.