NAME Acme::CPANModules::MagicVariableTechnique - Modules which employ magic variable technique to do stuffs VERSION This document describes version 0.001 of Acme::CPANModules::MagicVariableTechnique (from Perl distribution Acme-CPANModules-MagicVariableTechnique), released on 2019-01-09. DESCRIPTION Modules which employ magic variable technique to do stuffs. This is a list of modules which provide some "magic" variable which you can get/set to perform stuffs. I personally find this technique is mostly useful to "temporarily set" stuffs, by combining it with Perl's "local()". INCLUDED MODULES * File::chdir Provides $CWD which you can use to change directory. By doing: local $CWD = ...; in a subroutine or block, you can safely change directory temporarily without messing current directory and breaking code in other parts. Very handy and convenient. This is the first module I found/use where I realized the technique. Since then I've been looking for other modules using similar technique, and have even created a few myself. * File::umask Provides $UMASK to get/set umask. * Umask::Local Like File::umask, but instead of using a tied variable, uses an object with its "DESTROY" method restoring original umask. I find the interface a bit more awkward. Alternate modules: File::umask * Locale::Tie Provides $LANG, $LC_ALL, $LC_TIME, and few others to let you (temporarily) set locale settings. * Locale::Scope Like Locale::Tie, but instead of using a tied variable, uses an object with its "DESTROY" method restoring original settings. HOMEPAGE Please visit the project's homepage at . SOURCE Source repository is at . BUGS Please report any bugs or feature requests on the bugtracker website When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature. SEE ALSO Acme::CPANModules - about the Acme::CPANModules namespace cpanmodules - CLI tool to let you browse/view the lists AUTHOR perlancar COPYRIGHT AND LICENSE This software is copyright (c) 2019 by perlancar@cpan.org. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.