FYI -- Network Programming with Perl by Lincoln Stein (see the Reviews Section) has a great section on using Taint and the pitfalls thereof.

"Tainted data cannot be used in any function that affects the outside world, or Perl will die with an error message. Such functions include:
<snip>

Opening a file for writing"

etc...

He also says "every variable that such tainted data touches becomes tainted as well."

Being in the same hash does mean guilty by association.

"Nothing is sure but death and taxes" I say combine the two and its death to all taxes!

---

In reply to Re: tainted entangled hashrefs by Rex(Wrecks)
in thread tainted entangled hashrefs by Boldra

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":

---

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.