I think these two examples in your cheat sheet ending might be seen as confusing in that the values are assigned to scalars and force scalar context, which ultimately is not what the comment is claiming above the program statements.

# access the entire array through its reference my $elem_count = scalar @{ $aref }; # access the entire hash through its reference my $keys_count = keys %{ $href };

I get the point that the %{} and @{} make the hash reference into regular hash context, and the array reference into array context, but the final result in the examples in both are actually scalars, so the end result is the number of array elements, and the number of keys of the hash that's referred to by the variable. Perhaps that's a bit complex for a simple cheat example. Dunno, or you might want to clarify the comment to reflect the end result.

Of course the names of the variables is a good choice, but I don't know if that's sufficient.


In reply to Re: RFC (possible new tutorial) Guide to references; The Basics by raybies
in thread RFC (possible new tutorial) Guide to references; The Basics by stevieb

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.