Your post led me to believe your user ID's would be numeric. I don't think I quite understand what all of the "1, 2, ... , n | n != 1 or 2" is supposed to mean. ID's incrementing but starting at 3? If your intent is to associate a username and an ID, by all means a hash is what you want. See the documentation for sort, and perhaps How do I sort a hash (optionally by value instead of key)?. To find the largest ID, you can use 'max' from List::Util on the values of the %hash, but you're better off storing that in a variable unless your script only needs to use this once.

Regardless, this is pretty basic hash usage stuff. You would benefit more from a book like Learning Perl or the Perl Cookbook.


In reply to Re: Re: Re: hash creation. by Fastolfe
in thread hash creation. by Anonymous Monk

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.