I guess the unspoken implied behavior of a function named "int()" can be interpreted more ways than I expected. When I use "int()" in perl, what I actually wanted was C's cast-to-int or JavaScript's parseInt(), followed by making assumptions that I have an integer safe for any integer purposes.

Having learned about these edge cases, now I need to go back through all the controllers I've written and fix: 

  my $count= int($c->request->params->{count});
  $c->detach(HTTP => 422, ["Invalid count"])
    if $count < 0 || $count > $limit;

[download]
because passing NaN to the controller would let a non-integer value leak through to the code beyond.

In reply to Re^7: Weird behavior of int() by NERDVANA
in thread Weird behavior of int() by cLive ;-)

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.