Re: How can I define a new method for display?

[Panicz Maciej Godek]

Howdie!

2013/4/17 Tobias Brandt <address@hidden>

Hi guys,

according to the documentation, when GOOPS is loaded, 'display' becomes a generic function.

To wit:

scheme@(guile-user)> (use-modules (oop goops))

scheme@(guile-user)> (class-of display)

$1 = #<<procedure-class> <primitive-generic> 2cfa3c0>

But adding a new method has no effect:

scheme@(guile-user)> (define-class <foo> ())

scheme@(guile-user)> (define-method (display (self <foo>)) (display "foo"))

scheme@(guile-user)> (display (make <foo>)) (newline)

#<<foo> 2f428f0>

You should (define-method (display (self <foo>) port) ...)

Best regards