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I'm trying to make my own programming language with a syntax similar to lisp.  Not actual lisp though.  But right now I'm trying to work out how objects would work.  Currently this is what I'm looking at:

C-style:
ball.x = ball.x + ball.vx;

Mine:
(set (ball "x") (+ (ball "x") (ball "vx")))

Basically an object really is just a function that returns a reference to the member with the name in the argument (i.e. x).  This seems like it might be easy to implement, but there might just be a better syntax.

Any suggestions?

(ball 'x (+ (ball 'x) (ball 'vx)))?

>>1
Yes. Learn CLOS, and never speak of this thread again.

I don't see much point in including objects in a thing like this. Especially since it's trivial to create them as a library using lambdas.

>>4
Also generic functions are awesome. I agree with >>3.

>>1
(setf (assocq "x" ball) `("x" . ,(+ (ball "x") (ball "vx"))))

If you're poking at slots directly, you're OO wrong. The whole point is that an object manages its own godawful small affairs.

>>6

(setf (assoc "x" ball) `("x" . ,(+ (cdr (assoc "x" ball)) (cdr (assoc "vx" ball)))))
Terrible SICP programmer

>>1

we all know that set! is this awful thing.

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