Re: namespaces, goops, etc.

[Lars J. Aas]

On Fri, Nov 03, 2000 at 11:07:51PM +0200, Michael Livshin wrote:
: "Lars J. Aas" <address@hidden> writes:
: > Sorry, but I always get the same error whatever I try (guile 1.4, goops 
0.9):
: > 
: > guile> (define (hiho)
: >   ;; define the generic locally:
: >   (define-generic foo)
: >   ;; now happily specialize it:
: >   (define-method foo ((x <top>) x)))
: > guile> (hiho)
: > ERROR: In procedure cadr:
: > ERROR: Wrong type argument in position 1: (address@hidden foo)
: > ABORT: (wrong-type-arg)
: 
: [ I wonder why all my blind assumptions turn out wrong today? ]
: 
: mea culpa.
: 
: but it *should* work, I think.  ditto for `define-class'.
: 
: should ask Mikael if this is supposed to be this way...
: 
: > I've also tried with add-method! without success.  There's probably
: > a syntax error if what I've tried, but I can't spot it...

Oversight - the problem is with the define-generic, not with define-method,
and it shouldn't be possible with a syntax problem on that line ;-)

: this works for me:
: 
: (define-generic foo)
: 
: (define (hiho)
:   (add-method! foo (method ((x <top)) x)))

When the generic is defined in the toplevel it works with both
define-method and add-method!.

: and yes, tested this time ;).

Hehe.

: sorry,

No problem.  Got to read another one of your .sigs :)

  Lars J