Re: Widgets Vs Gadgets (Was : map/unmap optimization)

["Daniel Solaz" <dsolaz sistelcom com>]

julian.gosnell@nomura.co.uk wrote:
>In the best GUI toolkits that I have seen, widgets do not hold data at all, they
> simply call back to the user (probably with a clipped window or pixmap) when
> they need the data drawn, the user draws the data however they feel like doing
Sound like MVC.  Which toolkit does things this way?
>As any good LISP programmer will tell you - LISP isn't slow, it's just people do
> things in inefficient ways. The higher the level of abstraction at which you
> are able to optimise, the greater the benefit.
True but the efficient (destructive) Lisp programming style is said to
be against the spirit of the (original, functional) language.  Not that
it is bad, I just mean you have to be aware and make the difference
yourself.
-Daniel