Re: Useless functions in matlab function library.

[Paul Kienzle]

On Jul 11, 2007, at 8:56 AM, Guillem Borrell Nogueras wrote:

> I am not against OO.  In fact I am a happy python and C++ user.  It's 
> just  that the OO implementation in matlab is broken (IMO).  It's the 
> only  programming language where objects are not instances of a class.

<pedantic>

There are other languages which have objects without classes.  See for 
example the wikipedia entry on prototype based programming:

        http://en.wikipedia.org/wiki/Prototype-based_programming

One could argue that any use of interface style programming is 
classless.  In python, you can use any object that implements an 
interface in a function which expects an object of that interface (duck 
typing: if it quacks like a duck it is a duck).  The class 
infrastructure is mere convenience, since you can add all the instances 
you need to a bare object:

>>> def h(self,b): return self.x+b
...
>>> class A: x=3
...
>>> a = A()
>>> import new
>>> p = new.instancemethod(h,a,a.__class__)
>>> setattr(a,p.func_name,p)
>>> a.h(4)
7

</pedantic>


        - Paul