Re: [clisp-list] puzzling error while loading fas file.

[Pascal B. <pj...@in...>]

Takehiko Abe writes:
> I am getting an error "FIND-CLASS: XXX does not name a class"
> while loading a fas file.
> 
> Here's a test case:
> 
> I have two files "file-a.lisp" and "file-b.lisp":
> 
> ;;; file-a.lisp:
> 
> (defun foo (obj)
>   (map nil #'(lambda (item)
>                (when (typep item 'bar)
>                  (print 'bar)))
>        (list obj)))
> 
> ;;; file-b.lisp
> 
> (defclass bar () ())
> 
> ;;;
> 
> Both files load and compile fine. However, when I load
> file-a.fas (after restart) I frequently but not always get
> an error reporting:
> 
>    "FIND-CLASS: BAR does not name a class"
> 
> The problem is not consistent. Sometimes a compiled
> fas file loads fine without error until I recompile it
> or just for a while. I tried (lambda ...) instead of
> #'(lambda ...) and the problem seemed to go away ...
> again for a while.  And sometimes I cannot reproduce the
> error for a while.

The type (class) bar is defined in file-b.  So you must always load
file-b before loading file-a.

Instead of writing (load "file-a"), write:

(load"loader")

and put:

(load "file-b")
(load "file-a")

in loader.lisp


#'(lambda ...) is a pleonasm.  Always write just: (lambda ...)

-- 
__Pascal Bourguignon__                     http://www.informatimago.com/
Grace personified,
I leap into the window.
I meant to do that.