Uhm, IO::Handle is just a bunch of methods that allows one to write $handle->func(args) instead of func $handle, args, with func being a core function. Many of its methods are of the form: 
sub core_function {
    ... Check number of arguments ...
    core_function($_[0], $_[1], $_[2]);
}

[download]
The objects are blessed handles, not the most convenient things if you want to subclass and actually store attributes, unless you want to go the inside-out-object way or some other "late great OO framework".

IO::Handle actually abstracts little (it just gives some different syntax), and isn't the easiest to subclass. It doesn't really impress me.

In reply to Re^4: Improving your skills by reading module sources by JavaFan
in thread Improving your skills by reading module sources by unlinker

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.