Yes, this is legal code. The answer to your question is that there *is* no mechanism in Perl for declaring global variables. The point of use strict is to force you to think about what you're doing when it comes to variables. It will not, however, prevent you from shooting yourself in the foot. Perl is just not that kind of language.
On the more general issue: tied up with the whole "global/local" thang is the notion of packages. 'Ave yourself a look at perldoc -f package while you're exploring these issues.
Finally, lemme recommend, as I have many times before, Dominus' "Coping with Scoping" (follow the link to his page and thence to his site) and, less enthusiastically, my own proposed scoping tutorial.
I mistrust all systematizers and avoid them. The will to a system shows a lack of integrity -- F. Nietzsche
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
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:
Outside of code tags, you may need to use entities for some characters:
- 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.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||