From: Hugo van der Sanden <hv@crypt.org>
Date: Tue, 18 Mar 2003 00:27:19 +0000 (+0000)
Subject: clarify behaviour of $a++
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=6a61d433021b3577bc50df7d2cb1989f13551b88;p=p5sagit%2Fp5-mst-13.2.git

clarify behaviour of $a++

p4raw-id: //depot/perl@19014
---

diff --git a/pod/perlop.pod b/pod/perlop.pod
index ad46301..cd36ec1 100644
--- a/pod/perlop.pod
+++ b/pod/perlop.pod
@@ -127,6 +127,10 @@ character within its range, with carry:
     print ++($foo = 'Az');	# prints 'Ba'
     print ++($foo = 'zz');	# prints 'aaa'
 
+C<undef> is always treated as numeric, and in particular is changed
+to C<0> before incrementing (so that a post-increment of an undef value
+will return C<0> rather than C<undef>).
+
 The auto-decrement operator is not magical.
 
 =head2 Exponentiation