I think this could be accomodated for in the oft-unused Perl message-signature feature, which right now only takes basic types.

Apoc. 6 went through a total revamp of subroutines signatures. You can still use them like:

sub foo 
{
   my ($bar, $baz) = @_;
   . . . 
}

[download]

If you really want to, but if you did that, you'd be missing out on a lot of really cool stuff. I'm not so sure I personally want rigidly-enforced typing, but some of the signatures make calling conventions easier and make it obvious when we've called something incorrectly. At the same time, little flexibilty is lost over doing a complete check of @_ before we get to the actual code of the subroutine.

Type systems applied to objects is one way to solve the problem of $dog->bark vs. $tree->bark, but I'm not sure if it's the best. Delegation and Traits (both widely talked about in Perl6 development) are potentially much better.

My only OO heresy is that I despise "getter and setter" methods.

Hardly heresy. Having lots of accessors and mutators (i.e., methods which provide direct access to private data) is a sign of poor class design. I won't go as far to say that they should be absolutely forbidden. Whenever I enter such a debate, I hear this Drunken Scottish Object Programmer saying:

Ya can't just spread aaaccessors and muuutators all over your class design there ladie. You're screwwen the whole point!

But then again, maybe I should get the voices in my head checked out.

----
: () { :|:& };:

Note: All code is untested, unless otherwise stated

In reply to Re^3: perl6 & OO by hardburn
in thread perl6 & OO by chance

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