in reply to why use module??

why do we use module in perl

Lots and lots of reasons, here are two of the main advantages:

Does the using of module help to increase the loading speed of the page?

You sound a bit confused here. Modules can be used for much more than just HTML generation. For HTML generation though, using a template system will definately make your code a lot cleaner, more maintainable, and faster to develop than printing HTML will a bunch of heredocs and loops. On the other hand, I'm not a big fan of using CGI.pm's generation methods and would almost prefer a mess of heredocs to them :).

You might also want to take a look at UTFM - Use the Friendly Modules and/or do a super search on the subject.

Update: As for templating systems, check out HTML::Template and jeffa's excellent tutorial on the subject.

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Re: Re: why use module??
by kwtow (Novice) on May 06, 2002 at 05:49 UTC
    actually what I am asking about is should we write our own code into perl module or simply just use a normal include file for common sub routine that need to use on more than 1 script (which is without adding the line package in front to make it a perl module). does this make a different?
[reply]
      Hello,

      in my eyes, it depends on what you want to do and how big the script will become.

      E.g. if you've got a whole script suite that will work for a special web application, it might be a rather good idea to put the common used subroutines (or the like) into a module which is used by most of the scripts. Another point for a module might be configuration information for connections to database and the like (better never put such a module in a directory shared by web because of security), because it becomes much easier to maintain and change some items and as another benefit, code reusability might increase and the code might become more general.

      But for - let's say - a simple guestbook or the like, I'd rather not use a module, but for a webforum like perl-monks, I'd use quite some modules.

      I prefer loading modules that might be just needed in certain cases via require (and no import, because I hate namespace polluition), so it will be loaded in runtime if it is needed, unlike use, which loads it in every case.
      How are other people handling this?

      Best regards,
      perl -le "s==*F=e=>y~\*martinF~stronat~=>s~[^\w]~~g=>chop,print"

[reply]

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