First off, you'll want to learn how to post here. If you put your code between "<code>" and "</code>" tags, then normal code punctuation is escaped for you. So this:
my ($i); for ($i = 0; ($i < int (@commandsProperOrder)); $i += 2) { $commandsProperOrder{$commandsProperOrder$i} = $commandsProperOrder$i + 1; }
looks like this: 
my ($i); 
for ($i = 0; ($i < int (@commandsProperOrder)); $i += 2) {
$commandsProperOrder{$commandsProperOrder[$i]}
  = $commandsProperOrder[$i + 1]; 
}

[download]
(OK, I had to break some lines because of the long variable names, but otherwise it came out as typed.)

Second, I'd guess that the array @commands has a list of pairs, and that the code is trying to put those pairs into the hash %commands. Normally you want to know (or check) that your array is appropriate for this, but hash stuffing is more easily done with: 

%commands = @commands;

[download]
No $is, etc., just Perl magic.

This works because a list can be assigned to a hash, and it will (sometimes) do the right thing. (It's certainly no worse than the code you posted.) [When you're ready, just ask, someone will tell you when and why it doesn't do the right thing.]

-QM
--
Quantum Mechanics: The dreams stuff is made of

In reply to Re^2: Quick easy question: What does $i mean? by QM
in thread Quick easy question: What does $i mean? by sicone

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.