I wouldn't have even expected that to work. Briefly: $config->acls returns a hashref. So far so fine. You can dereference it with

my %hash = %{ $config->acls }; # to get a full hash, # and my $item = $config->acls->{thatkey}; # to get a single element.

Now the first element is possibly a bit deceiving, because it would work even if the hashref was "converted" to the flattened list of its pairs, whereas the rvalue is a hash at all effects, so that it can directly used e.g. with each and keys, like it was already explained to you.

Whatever, accessing elements as per the second example, still involves method calls, and although I, like so many others, recommend all the time not to bother about alleged optimizations, that feels somewhat unsatisfactory. Personally, I'd just assign to a suitably lexically scoped hash say, %tmp for convenience. YMMV.


In reply to Re^2: Hashes as return values by blazar
in thread Hashes as return values by dirtdart

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.