If your target label in a goto is undefined, perl won't complain until it tries to actually execute the goto, even when using strict and warnings. If your goto is handling a "once in a thousand years" case, then you're likely not to notice this typo until it's too late.

Ofcourse, you have the same problem if you use a subroutine/method call (though you would probably not use those in the same situation).

Myself, I would prefer 

while (1) {
    ....
    ....
    last unless (EXPR);
}

[download]
Which makes very clear that this is a loop (even though it might not loop more than once 99% of the time) and it "forces" some structure (which is not always a bad thing), and it might make you see the problem from a new perspective - TIMTOWDI after all. 
-- 
Joost       downtime n. The period during which a system
            is error-free and immune from user input.

[download]

In reply to Re: Re: GOTO considered (a necessary) evil? by Joost
in thread GOTO considered (a necessary) evil? by gav^

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.