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[p5sagit/p5-mst-13.2.git] / lib / constant.pm

diff --git a/lib/constant.pm b/lib/constant.pm
index 4b6c98b..906b777 100644 (file)
--- a/lib/constant.pm
+++ b/lib/constant.pm
@@ -4,12 +4,13 @@ use strict;
 use warnings::register;
 
 use vars qw($VERSION %declared);
-$VERSION = '1.11';
+$VERSION = '1.17';
 
 #=======================================================================
 
 # Some names are evil choices.
-my %keywords = map +($_, 1), qw{ BEGIN INIT CHECK UNITCHECK END DESTROY AUTOLOAD };
+my %keywords = map +($_, 1), qw{ BEGIN INIT CHECK END DESTROY AUTOLOAD };
+$keywords{UNITCHECK}++ if $] > 5.009;
 
 my %forced_into_main = map +($_, 1),
     qw{ STDIN STDOUT STDERR ARGV ARGVOUT ENV INC SIG };
@@ -167,7 +168,7 @@ read, more likely to be maintained (and maintained correctly), and
 far less likely to send a space probe to the wrong planet because
 nobody noticed the one equation in which you wrote C<3.14195>.
 
-When a constant is used in an expression, perl replaces it with its
+When a constant is used in an expression, Perl replaces it with its
 value at compile time, and may then optimize the expression further.
 In particular, any code in an C<if (CONSTANT)> block will be optimized
 away if the constant is false.
@@ -330,6 +331,20 @@ immediately to its left, you have to say C<< CONSTANT() => 'value' >>
 (or simply use a comma in place of the big arrow) instead of
 C<< CONSTANT => 'value' >>.
 
+=head1 SEE ALSO
+
+L<Readonly> - Facility for creating read-only scalars, arrays, hashes.
+
+L<Const> - Facility for creating read-only variables. Similar to C<Readonly>,
+but uses C<SvREADONLY> instead of C<tie>.
+
+L<Attribute::Constant> - Make read-only variables via attribute
+
+L<Scalar::Readonly> - Perl extension to the C<SvREADONLY> scalar flag
+
+L<Hash::Util> - A selection of general-utility hash subroutines (mostly
+to lock/unlock keys and values)
+
 =head1 BUGS
 
 Please report any bugs or feature requests via the perlbug(1) utility.
@@ -349,7 +364,7 @@ This program is maintained by the Perl 5 Porters.
 The CPAN distribution is maintained by SE<eacute>bastien Aperghis-Tramoni
 E<lt>F<sebastien@aperghis.net>E<gt>.
 
-=head1 COPYRIGHT
+=head1 COPYRIGHT & LICENSE
 
 Copyright (C) 1997, 1999 Tom Phoenix