There is now also Ref::Util which avoids the need to compare the result against a string (which itself might contain a typo). So, instead of

use Scalar::Util 'reftype';
if (reftype ($foo) eq 'ARAY') { # spot the typo
    do_something ();
}

[download]

which would silently fail to do anything even if $foo were an arrayref, we can now say

use Ref::Util 'is_arrayref';
if (is_arrayref ($foo)) {
    do_something ();
}

[download]

which would throw a compile-time error if we had a similar typo in the function name.

Ref::Util also uses the XS implementation (if installed) which makes it fast. It has no dependencies beyond Exporter. There are plenty of other goodies in this module which you can find in the documentation.

In reply to Re: How do I determine the type of a reference? by hippo
in thread How do I determine the type of a reference? by Anonymous Monk

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.