Just in case somebody has a similar issue and finds this: In the end I used keyword-apply/sort , which doesn't requiere keywords to follow the same order they do in the function definition.
On Thursday, 26 November 2020 at 10:42:40 UTC+1 Dimaugh Silvestris wrote: > Thanks! Your answer led me to find keyword-apply, so I just wrote (I use > def as abbreviation for define): > > (def (parse-args xs) > (def (fn ks kvs vs xs) > (cond [(empty? xs) (map reverse (list ks kvs vs))] > [(keyword? (car xs)) > (fn (cons (car xs) ks) (cons (cadr xs) kvs) vs (drop xs 2))] > [else (fn ks kvs (cons (car xs) vs) (cdr xs))])) > (fn '[] '[] '[] xs)) > > (def (func-args func args) > (apply keyword-apply func (parse-args args))) > > And now I can do > : > (def (suma a b #:c [c 0]) (+ a b c)) > (func-args suma (list 1 2 #:c 3)) > > and it works fine. > > Thanks again! > On Thursday, 26 November 2020 at 10:06:26 UTC+1 [email protected] wrote: > >> If you are OK with preprocessing the argument list into a dictionary, >> then you can use keyword-apply/dict >> <https://docs.racket-lang.org/reference/dicts.html?q=keyword%2Fapply#%28def._%28%28lib._racket%2Fdict..rkt%29._keyword-apply%2Fdict%29%29> >> . >> >> For example: >> >> #lang racket >> >> (require racket/dict) >> >> (define proc (lambda (#:color color #:size size) (display (cons color >> size)))) >> (define args '(#:color "red" #:size 3)) >> (define args* >> (for/hash ([chunk (in-slice 2 args)]) >> (values (first chunk) (second chunk)))) >> >> (keyword-apply/dict proc args* '()) >> >> >> On Thu, Nov 26, 2020 at 12:53 AM Dimaugh Silvestris < >> [email protected]> wrote: >> >>> Is it possible to reproduce this behavior >>> ((lambda (#:color color #:size size) (display (cons color size))) >>> #:color "red" #:size 3) >>> when what I have is a list such as '(#:color "red" #:size 3) ? >>> How can I feed keyword arguments stored in a list as symbols in a way >>> that doesn't involve parsing manually? >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Racket Users" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/racket-users/06a1b45b-77ca-4595-b5b6-0b4ce01fe026n%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/racket-users/06a1b45b-77ca-4595-b5b6-0b4ce01fe026n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/432319aa-ae3c-4644-8ac8-1de12f0b6c39n%40googlegroups.com.
