He (TheDamian) further advises you to use anonymous subroutines and the CPAN Sub::Installer module when you have a need to create new subroutines that are built around some expression that the user supplies.
While Sub::Installer is certainly a good idea (insulating the user from the evils of symbol table manipulation, which is at least as dangerous as string eval in the 'wrong' hands). It's code can hardly be considered to contain
"Best Practices" IMO. It clearly abuses UNIVERSAL in a way which affects not only the code which uses it, but all other running Perl code. This is the offending code:
use base 'Sub::Installer';
This would mean that every Perl object
will respond true to the query $object->isa('Sub::Installer')
. Again, IMO, that is not
a Best Practice, but instead a really really bad idea.
Sorry, I am a little passionate about code which tramples over the Perl 5 object model like this.
But fear not! CPAN will save the day. As an alternative, I offer Sub::Install an excellent module which does not assert it's will upon your entire runtime.
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.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||