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Postings from April 2006
Author: autrijus
Date: Fri Apr 21 08:56:22 2006
New Revision: 8899
Modified:
doc/trunk/design/syn/S05.pod
Log:
* S05: Oops, turns out I entirely read perlop.pod incorrectly;
"it matches once only" means "it matches successfully once only",
not "it performs the match once only". Sorry, TimToady++'s
original example of:
(state $x) ||= / pattern /;
was correct.
Modified: doc/trunk/design/syn/S05.pod
==============================================================================
--- doc/trunk/design/syn/S05.pod (original)
+++ doc/trunk/design/syn/S05.pod Fri Apr 21 08:56:22 2006
@@ -1066,9 +1066,9 @@
The Perl 5 C<?...?> syntax (I<match once>) was rarely used and can be
now emulated more cleanly with a state variable:
- (state $x) //= / pattern /; # only matches first time
+ (state $x) ||= / pattern /; # only matches first time
-To reset the pattern, simply say C<undefine $x>.
+To reset the pattern, simply say C<$x = 0>.
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