There is indeed a reason I go to all that trouble.

The serial numbers are recieved in random order, up to 20K of them. I want the 'operater' to know what were the last 20 serial numbers received (last-in at the top of the list) and what's still missing from the 'group, A-D'. There a section of the script that reads from a database to get serial-number groups that may have been read much earlier (no longer on the last 20 list).

I could simply get the display data directly from the database, but I concluded that selecting and sorting from 20K records would be time consuming so I decided to maintain a 'last-20' array (or hash) instead.

Tanktalus, I tried out your hash idea and got it working. I'm not sure which is better. Capturing the serial numbers is easier, but the display gets pretty messy.

I guess it's a toss up :)

In reply to Re^3: Populate and sort AoA by nedals
in thread Populate and sort AoA by nedals

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.