Re: caching in load-time-value and defmacro

[Bruno H. <br...@cl...>]

J=C3=B6rg wrote:
> Dan Cohen wonders:
> >Is there some reason these do not execute only once?
> 2. Yes, indeed, why not?!
> Then I'd have a better feeling about recommending load-time-value for FFI
> stuff in CLISP, since it's valuable for compiled code and would not be
> stupid in interpreted code.

If you want to avoid stupidly slow behaviour in the evaluator, i.e.
guarantee that a form is executed only once, you can use the MEMOIZED
macro, found in defs1.lisp.

Bruno