Careful about using a hash for this, as the keys are unordered order of the keys is undefined. It isn't wrong; it just has the potential for unexpected surprises if order of the replacements is important.

Let's say you have a set of two regexes in your hash: { a => 'b', b => 'c'}. If the 'a' key is used first, you will end up with no 'b' values in your results. OTOH, if the 'b' key is used first, you might (if 'a' exists in the contents of $line).

'abacus' => 'ccccus' # a => b, then b => c
'abacus' => 'bcbcus' # b => c, then a => b
[download]

A 'better' solution for this might be an array of arrays (AoA), with the patterns in the order that you wish to apply them: ( [ a => 'b' ], [ b => 'c' ] ), and then stepping through the set of replacements in the expected order.

---

---

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.