02 Aug 2005 05:15:44 UTC
- Distribution: Leading-Zeros
- Module version: 0.0.2
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- Latest version++ed by:1 non-PAUSE userDCONWAY Damian Conway
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Leading::Zeros - Defuse Perl's octal number representation
This document describes Leading::Zeros version 0.0.2
no Leading::Zeros; my $answer = 042; # dies
This module offers some control over Perl's insidious "leading-zero-means-octal" notation.
If the module is loaded via a
then any subsequent attempt to use an integer constant with a leading zero, causes an exception to be thrown. The intention is to prevent you from doing so by accident.
If the module is loaded via a
use, like so:
then it silently pretends that any octal value (say, 042) was really a decimal value (i.e. 42).
If the module is loaded with the special
use Leading::Zeros -warning;
then octal numbers are treated as usual (i.e. as octals), but a warning is issued. See below.
- Warning: octal constant %s (decimal value: %s) used
use Leading::Zeros -warningyou used an octal constant. It was left as an octal value, but this is the warning you asked for.
Leading::Zeros requires no configuration files or environment variables.
No bugs have been reported.
Please report any bugs or feature requests to
firstname.lastname@example.org, or through the web interface at http://rt.cpan.org.
Copyright (c) 2005, Damian Conway
<DCONWAY@cpan.org>. All rights reserved.
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Module Install Instructions
To install Leading::Zeros, copy and paste the appropriate command in to your terminal.
perl -MCPAN -e shell install Leading::Zeros
For more information on module installation, please visit the detailed CPAN module installation guide.