| Kevin Michael Vail 2004-05-24, 6:32 pm |
| Version 0.0601 corrects a problem whereby the dependencies in
Makefile.PL didn't get carried over when I switched from using RCS to
using CVS. Duh.
This module creates lexical aliases to items that can be either lexical
or dynamic. For example, after this statement:
my $foo := $array[2];
both $foo and $array[2] refer to the same value. If you take references
to both items, you'll discover that \$foo eq \$array[2]. Changing
either of them changes the other.
You can also alias entire arrays or hashes:
my @bar := @$arrayref;
my %baz := %{$hoh{'element1'}->{'subelement'}};
You can also alias the contents of an array or a hash, or an array or
hash slice.
my ($foo, @bar, %baz) := *@array;
In the above, $array[1] must be an array reference, and $array[2] must
be a hash reference.
When aliasing the contents of a hash, the names of the aliased
variables determine the hash members that are aliased. The following
two statements have identical effects.
my ($foo, @bar, %baz) := *%hash;
my ($foo, @bar, %baz) := @hash{qw/foo bar baz/};
This version is still an alpha version, released so that I can get some
feedback
on bugs and on the general functionality of the module.
Version 0.02 fixed some minor problems.
Version 0.03 gets the prerequisites right in Makefile.PL.
Version 0.04 corrects a number of bugs, and updates the prerequisite
for PadWalker to 0.09.
Version 0.05 checks to see if a hash element exists before attempting
to create an alias for it, and modifies the tests to skip several of them
due to a problem in PadWalker with Perl 5.8.x.
Version 0.06 fixes a long-standing problem with bindings in recursive
subroutines. Basically, the underlying XS code was always binding the
variable in the first call, not the one at the current stack level.
INSTALLATION
To install this module type the following:
perl Makefile.PL
make
make test
make install
DEPENDENCIES
This module requires these other modules and libraries:
Filter::Util::Call
Text::Balanced
PadWalker
COPYRIGHT AND LICENCE
Copyright 2003-2004 Kevin Michael Vail
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
--
Found Poetry (_Science News_, 14-Jun-2003): oldest _homo sapiens_ find
+-----------------------------------------+ ocean eddies' far-flung effects;
| Kevin Michael Vail <kevin@vaildc.net> | superior threads spun
+-----------------------------------------+ the pox from prairie dogs.
|