D'oh, the proper post is 'below' this one, sorry

As far as I know, the use warnings pragma was introduced as:

- it is easier for people who are on non 'shebang supporting' systems to use.
- it can be disabled for certain sections of code, e.g.

use strict;
use warnings; 

print $foo;   # Warning here, undefined value

no warnings; 
print $foo;   # No warning now 

use warnings; 
print $foo;  # Warning again
[download]

On systems that don't support the UNIX shebang, it is a pain having to manually type in

perl -w foo.pl

every time you want warnings. If you can just use the pragma, it is easier.

---

---

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! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, 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, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.