Note that $self in the callback doesn't make much sense

Well - yes and no. Without the $self certainly works as you have it, but it is much easier to use $self. $self in this case is simply the topic of discussion - the guy who called the method - even if he isn't the one who owns the method. Using the callback as a method also allows the following to work without the predeclared "my $fp".

my $fp = Foo::Parse->new('Fooparser', \&Some::Other::Class::Method);

You can call the Some::Other::Class::Method with any object that "does" everything that Method requires. This will be easier to validate for in Perl 6 as even the anonymous method can have a signature that can make sure that whatever gets passed to it has the appropriate capabilities.

my @a=qw(random brilliant braindead); print $a[rand(@a)];

In reply to Re^2: Seeking advice for OO-related strategy by Rhandom
in thread Seeking advice for OO-related strategy by blazar

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.