Will -w work in place of use warnings;

Yes. But use warnings is more powerful and localized to the module it is used in. If/when you upgrade to 5.6 or later then try to get into the habit of using warnings and not -w.

As for the code, it looks ok to me. (In principle.) Although I might write 

my $bita=pack("C,hex($bit));

[download]
instead. And 
my($RH,$GH,$BH)=($color =~ /(..)(..)(..)/);

[download]
Also it would be a good idea to get into the habit of indenting properly. You can check out the tool "PerlTidy" hosted on source forge to do have it done automatically for you. perlstyle will have some hints for you with regard to programming style. For instance $RH is not the best var name. To me it implies a filehandle or something else with "mystic" overtones (due to its captialization). I would probably have just used $red instead...

Ultimately it looks like you are on the right path... Keep it up!

HTH

--- demerphq
my friends call me, usually because I'm late....

In reply to Re: Strict, my and warnings by demerphq
in thread Many strings make one variable? by heezy

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.