From: Vincent Pit <vince@profvince.com>
Date: Sat, 27 Dec 2008 11:31:29 +0000 (+0100)
Subject: Document the return values of the callbacks
X-Git-Tag: v0.27~20
X-Git-Url: http://git.vpit.fr/?a=commitdiff_plain;h=b4df0fe613c5d28ab2a82e6f5fdac149013d88fc;p=perl%2Fmodules%2FVariable-Magic.git

Document the return values of the callbacks
---

diff --git a/lib/Variable/Magic.pm b/lib/Variable/Magic.pm
index bad5961..448ea29 100644
--- a/lib/Variable/Magic.pm
+++ b/lib/Variable/Magic.pm
@@ -324,6 +324,9 @@ In the special case of C<len> magic and when the variable is an array, C<$_[2]>
 C<$_[2]> is the current key in C<copy>, C<fetch>, C<store>, C<exists> and C<delete> callbacks, although for C<copy> it may just be a copy of the actual key so it's useless to (for example) cast magic on it.
 C<copy> magic also receives the current element (i.e. the value) in C<$_[3]>.
 
+All the callbacks are expected to return an integer, which is passed straight to the perl magic API.
+However, only the return value of the C<len> callback currently holds a meaning.
+
 =back
 
     # A simple scalar tracer