Re: GOOPS with variable number of arguments

[Jan Wedekind <jan@wedesoft.de>]

Ok, thanks. I'll use that solution.

On Sat, 28 Nov 2015, David Kastrup wrote:

> Jan Wedekind <jan@wedesoft.de> writes:
>
>> Hi,
>> I am trying to implement n-ary operations for different types of objects.
>> When specialising "+" for two arguments, it will automatically work on
>> more arguments.
>>
>>     (use-modules (oop goops) (srfi srfi-1))
>>     (define-generic +)
>>     (define-method (+ (a <string>) (b <string>)) (string-append a b))
>>     (+ "a" "b" "c")
>>     ; "abc"
>>
>> However I have trouble figuring out a method definition for test which
>> would result in the same behaviour.
>>
>>     (define (test . args) ...)
>>     (define-generic test)
>>     (define-method (test (a <string>) (b <string>)) (string-append a b))
>>     (test "a" "b" "c")
>>     ; "abc"
>>
>> Please let me know if there is a solution.
>
>