If you're worried about looks you could define a prototyped sub which takes a block, key, and the hash to which to add. 

sub add_action (&\%$) {
  my( $code, $h, $key ) = @_;
  $h->{$key} = $code;
}

my %dispatch;
add_action { do_something_with_foo } %dispatch => qr/foo/;

[download]

As an aside, you might want to look at Tie::RefHash which will keep the compiled regexen as keys rather than stringifying them (they'll get recompiled when you use them /$re/, but it's kinda inefficient).

In reply to Re: Munging with a regex dispatch table by Fletch
in thread Munging with a regex dispatch table by Solo

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! —
  • 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:
    & &amp;
    < &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.