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| author | Ricardo SIGNES <rjbs@cpan.org> | 2007-11-14 10:34:30 -0500 |
|---|---|---|
| committer | Rafael Garcia-Suarez <rgarciasuarez@gmail.com> | 2007-11-15 07:59:40 +0000 |
| commit | f292fc7a7d8460bfc8c09d1cb38f8427574bdfaa (patch) | |
| tree | ca3f39f5bbbcf4348e7cc7992aed76bd63f115ff /pod/perlsub.pod | |
| parent | 0fe18d469d35fb885f2b7b708780d772e048c0c7 (diff) | |
| download | perl-f292fc7a7d8460bfc8c09d1cb38f8427574bdfaa.tar.gz | |
perlsub's docs on state assignment are busted
Message-ID: <20071114203430.GA7191@zodiac.codesimply.com>
p4raw-id: //depot/perl@32325
Diffstat (limited to 'pod/perlsub.pod')
| -rw-r--r-- | pod/perlsub.pod | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/pod/perlsub.pod b/pod/perlsub.pod index fed1474a03..72b28f1add 100644 --- a/pod/perlsub.pod +++ b/pod/perlsub.pod @@ -453,11 +453,10 @@ each time the gimme_another() function is called: Also, since C<$x> is lexical, it can't be reached or modified by any Perl code outside. -Be aware that assignment to C<state> variables (as in C<state $x = 42>) -are executed every time; to initialize (or re-initialize) an undefined -state scalar, you can use, for example, the defined-or assignment : - - state $x //= initial_value(); +When combined with variable declaration, simple scalar assignment to C<state> +variables (as in C<state $x = 42>) is executed only the first time. When such +statements are evaluated subsequent times, the assignment is ignored. The +behavior of this sort of assignment to non-scalar variables is undefined. =head3 Persistent variables with closures |