=head1 NAME
-perldelta - what's new for perl v5.6.0
+perl56delta - what's new for perl v5.6.0
=head1 DESCRIPTION
# new features supported
}
-C<require> and C<use> also have some special magic to support such literals.
-They will be interpreted as a version rather than as a module name:
+C<require> and C<use> also have some special magic to support such
+literals, but this particular usage should be avoided because it leads to
+misleading error messages under versions of Perl which don't support vector
+strings. Using a true version number will ensure correct behavior in all
+versions of Perl:
- require v5.6.0; # croak if $^V lt v5.6.0
- use v5.6.0; # same, but croaks at compile-time
-
-Alternatively, the C<v> may be omitted if there is more than one dot:
-
- require 5.6.0;
- use 5.6.0;
+ require 5.006; # run time check for v5.6
+ use 5.006_001; # compile time check for v5.6.1
Also, C<sprintf> and C<printf> support the Perl-specific format flag C<%v>
to print ordinals of characters in arbitrary strings:
that with a C<use attrs> pragma in the body of the subroutine.
That can now be accomplished with declaration syntax, like this:
- sub mymethod : locked method ;
+ sub mymethod : locked method;
...
sub mymethod : locked method {
...
}
- sub othermethod :locked :method ;
+ sub othermethod :locked :method;
...
sub othermethod :locked :method {
...
is destroyed and all the weak references to the object are
automatically undef-ed.
-To use this feature, you need the WeakRef package from CPAN, which
+To use this feature, you need the Devel::WeakRef package from CPAN, which
contains additional documentation.
NOTE: This is an experimental feature. Details are subject to change.
See http://www.plover.com/~mjd/perl/at-error.html for more details
about the history here.
+=head2 @- and @+ provide starting/ending offsets of regex matches
+
+The new magic variables @- and @+ provide the starting and ending
+offsets, respectively, of $&, $1, $2, etc. See L<perlvar> for
+details.
+
=head1 Modules and Pragmata
=head2 Modules
=item B
The Perl Compiler suite has been extensively reworked for this
-release. More of the standard Perl testsuite passes when run
+release. More of the standard Perl test suite passes when run
under the Compiler, but there is still a significant way to
go to achieve production quality compiled executables.
=head1 NAME
- sample - Using GetOpt::Long and Pod::Usage
+ sample - Using Getopt::Long and Pod::Usage
=head1 SYNOPSIS
If you find what you think is a bug, you might check the
articles recently posted to the comp.lang.perl.misc newsgroup.
-There may also be information at http://www.perl.com/perl/, the Perl
+There may also be information at http://www.perl.com/perl/ , the Perl
Home Page.
If you believe you have an unreported bug, please run the B<perlbug>