Both of them are bad. Both "passing around" and "global variables" are a signs of a misdesign.
If you have a value that must be shared, make it a "regional" variable, accessible to a few subroutines that deal with it, and in turn provide a higher-level interface that don't need to expose that variable. For example, if you're talking about something like a database handle, create a module that does all the DB stuff, and then you can initialize (perhaps lazily) the database handle there. Thus, the rest of the program does not have access to the database handle, but you still don't have to pass it around a lot.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||