-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 $Bill Luebkert <[EMAIL PROTECTED]> wrote [1:46am -0700]
BL > Marcos Lorenzo de Santiago wrote: BL > BL > > But why? Is there any reason for not doing this? I guess maybe security BL > > problems? or unexpected script behaviour? BL > BL > Good start. BL > BL > If you went to the trouble of verifying each and every argument before BL > you created a var out of it (maybe using a pre-defined list of legal BL > values) you could limit the downside of the errors you could get. The BL > interpreter is going to eval whatever you tell it to and if there were BL > a way to feed an evil config file to your program, it could be disastrous. BL > I would trust an eval if it was only my code that was being eval'd, but BL > not from an external source. Ok, that's what I was thinking about. Then you're right, I'll forget that eval function possibility. BL > eval has it's uses, mostly for trapping errors in sub-code and debugging, BL > but most people avoid it in regular code. There are differences between BL > V4 and V5 and memory leak problems that you could encounter; plus the fact BL > that you're adding a level of complexity to your code. I'll follow your instructions, now that I know the main use of eval. I always thought its use was for this purposes, but now I see it clearly. BL > I'd still recommend using a short hash name instead and also be careful BL > of what 'value' these vars/keys can take on from the config file. Ok, I'll keep my eyes wide open :) Thanks for the advice! Regards, Marcos. - -- ,----------------------------------------------------------------------. | "There are a billion people in China. And I want them to be able to | | pass notes to each other written in Perl. I want them to be able to | | write poetry in Perl. That is my vision of the Future. My chosen | | perspective." | | -- Larry Wall (Open Sources, 1999 O'Reilly and Associates) | |----------------------------------------------------------------------| | Labs. Technician | | | Department of Telematic Engineering | Debian GNU/Linux Powered | | Carlos III University of Madrid | | |-------------------------------------------| .--. | | | |o_o | | | _________ | .''`. |:_/ | | | |~~ @| Marcos Lorenzo de Santiago | : :' : // \ \ | | | ==== | E-mail: [EMAIL PROTECTED] | `. `' (| | ) | | | ==== | Telephone: (+34) 91-624-9959 | `- /'\_ _/`\ | | |_________| Web: www.it.uc3m.es/marcos | \___)=(___/ | | | | `----------------------------------------------------------------------' -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: For info see http://quantumlab.net/pine_privacy_guard/ iD8DBQFCUlPjckJQBlHCNUERAtI4AJ912/F8VMFv3Xa6EVDJwOg9Wew+9gCfRad/ 48GCieUrHDCEDZ6H8nFNj98= =LHlg -----END PGP SIGNATURE----- _______________________________________________ Perl-Unix-Users mailing list Perl-Unix-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
