Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl-Sensitive Sunglasses
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
Do you really have an autovivification problem?

> I only want to be here if I set $Hash{'2013'}{'Oct'}{'11th'} = 1 explicitly.

If you only check  if ($Hash{'2013'}{'Oct'}{'11th'} == 1) { .. } you can't be bothered by hash-refs.

Anyway better rethink your concept!

When setting $Hash{'2013'}{'Oct'}{'11th'} = 1 you are overwriting a potential hashref to a nested hash and any previous $Hash{'2013'}{'Oct'}{'11th'}{'1AM'}{'30Min'}=1 will be lost.

Better use an additional level of keys to mark and write and test $Hash{'2013'}{'Oct'}{'11th'}{MARK} or so.

Cheers Rolf


In reply to Re: Undesirable parent hash keys (concept?) by LanX
in thread Undesirable parent hash keys by sophate

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!
  • 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, 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, 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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others perusing the Monastery: (12)
    As of 2015-07-31 18:42 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









      Results (280 votes), past polls