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davorg (18)

davorg
  dave@dave.org.uk
http://dave.org.uk/
Yahoo! ID: daveorguk (Add User, Send Message)

Hacker, author, trainer

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Journal of davorg (18)

Wednesday July 23, 2003
10:41 AM

YAPC Day 1

[ #13644 ]

Last minutes changes of schedule meant that I did my talk on Tieing and Overloading Objects in Perl today instead of on Friday. I've now put the slides online.

I'm currently sitting an ad-hoc session of london.pm talks listening to Piers talking about doing very scary things by overloading the global definition of bless!

Oh, and my new article is now on perl.com.


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  • Very nice article, I liked it.

    A question, though: I admit I don't understand all the magic behind overloading constants, but shouldn't the example on page 2

    return __PACKAGE__->new($_[0]) || $_[1]
    be testing the result of the constructor call with defined()? Is it possible, with all the overloading going on, that the result of new('0/1') would be interpreted as a number 0 and thus appear to fail?

  • The article had some very nice examples in it, especially for the use of constant overloading. I used to think that was only good for confusing your coworkers with "zero but true"-hacks.

    I'm not sure your arguments hold true, that the code would be less clean in Java. Having multiple methods would be much nicer in my opionion. Maybe it's just me, but I think that elsif is one of the ugliest constructs ever invented (right after the switch statement).

    I know that its not possible in Perl, but I think its

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