Is there a way to inherit methods from a parent struct? If I'm not mistaken, it's not what #:defaults and other keywords are for.
For example, the following fails: #lang racket (require racket/generic) (define-generics g (foo g) (bar g)) (struct a () #:methods gen:g [(define (foo g) '(foo a)) (define (bar g) '(bar a))]) (struct b a () #:methods gen:g [(define (foo g) '(foo b))]) (foo (a)) ; '(foo a) (foo (b)) ; '(foo b) (bar (a)) ; '(bar a) (bar (b)) ; Error: bar: not implemented for #<b> Laurent On Fri, Sep 6, 2013 at 4:13 PM, Konrad Hinsen <konrad.hin...@fastmail.net>wrote: > Asumu Takikawa writes: > > > You can write the method implementations as plain function definitions > > in some module, e.g., > > > > (define (my-dict-ref ...) ...) > > ... > > (provide my-dict-ref ...) > > > > and then in each structure you can do > > > > (struct particular-dict (...) > > #:methods > > [(define dict-ref my-dict-ref) > > ...]) > > > > to share the implementations. > > That looks so obvious once you see it... Thanks a lot! > > Konrad. > ____________________ > Racket Users list: > http://lists.racket-lang.org/users >
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