Beefy Boxes and Bandwidth Generously Provided by pair Networks
We don't bite newbies here... much
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

I'm not sure I'd go with the operator overloading here. It does mean you have to keep a firm grasp on all the interfaces and remember what a variable is supposed to contain. It also makes spotting mistakes harder - if I have the wrong object in $current_token, $current_token->equals($token) may well have Perl complaining it can't find that method, while $current_token == $token will (more or less) quietly do the wrong thing.

I like overloading, but I believe it is very, very dangerous if used too readily. It's great when you're creating a class that shares characteristics with the basic data types, like writing a Math::Complex or something, where $a * $b ends up meaning exactly what I expect. Also, overloading stringification is very handy. I would be really hesitant to use it to represent more arbitrary semantics.

As for your example, I'd probably want something like this:

my $point = new Point(42, 42); my $start_point = $point->copy; $point->add_x(1) while $image->element_at($point)->color == RED; my $end_point = $point->copy; $image->draw_line($start_point, $end_point, BLACK);

Makeshifts last the longest.


In reply to Re^3: $bad_names eq $bad_design by Aristotle
in thread $bad_names eq $bad_design by Ovid

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!
  • 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, 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, 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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others cooling their heels in the Monastery: (6)
    As of 2015-07-31 00:35 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









      Results (274 votes), past polls