Looking at Perl Best Practices I would have to say the answer is that you should not quote them (unless necessary). I do not think TheDamian addresses this specifically but all of his "good" examples contain unquoted keys. For example, see "Keys and Indices" on page 14.

The closest he comes to explicitly covering this is under "Fat Commas" in the "Reserve => for pairs" section on pages 66 - 68. This quote particulalry stands out " [ The Fat Comma ] also removes the need to quote the key string . . . ." This is recommended because it reduces screen clutter and thus increases the readability of your code (see the "bad" example on page 67).

So, if you like the guidlines set forth in Perl Best Practices then the answer is to only quote hash keys when necessary.


In reply to Re: quotes in hash keys by Argel
in thread quotes in hash keys by kinaseman

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.