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document procedure-reduce-keyword-arity-mask

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Should have been part of ecbd6f1578.
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Matthew Flatt 2018-08-14 20:35:08 -06:00
parent facba8a6ab
commit f46721fe85
1 changed files with 15 additions and 1 deletions
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pkgs/racket-doc/scribblings/reference/procedures.scrbl
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@ -240,7 +240,7 @@ as for @racket[proc].
[name (or/c symbol? #f) #f])
procedure?]{
The same as @racket[procedure-reduce-arity-mask], but using the
The same as @racket[procedure-reduce-arity], but using the
representation of arity described with @racket[procedure-arity-mask].
The mask encoding of an arity is often easier to test and manipulate,
@ -364,6 +364,20 @@ must require no more keywords than the ones listed in
(eval:error (show #:init 0 1 2 3 #:extra 4 #:more 7))
]}
@defproc[(procedure-reduce-keyword-arity-mask [proc procedure?]
[mask exact-integer?]
[required-kws (listof keyword?)]
[allowed-kws (or/c (listof keyword?)
#f)])
procedure?]{
The same as @racket[procedure-reduce-keyword-arity], but using the
representation of arity described with @racket[procedure-arity-mask].
@history[#:added "7.0.0.11"]}
@defstruct[arity-at-least ([value exact-nonnegative-integer?])]{
A structure type used for the result of @racket[procedure-arity].