suzanne.soy/racket
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add more documentation for Procedure type

Browse Source 
Please merge to v6.0
(cherry picked from commit 1243d12248)
This commit is contained in:
Asumu Takikawa 2013-12-07 22:57:53 -05:00 committed by Ryan Culpepper
parent 3e32c8993f
commit a97ed3f5e7
1 changed files with 15 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
pkgs/typed-racket-pkgs/typed-racket-doc/typed-racket/scribblings/reference/types.scrbl
View File

@ -513,7 +513,21 @@ functions and continuation mark functions.
(is-zero? 2 #:equality =) (is-zero? 2 #:equality =)
(is-zero? 2 #:equality eq? #:zero 2.0)]} (is-zero? 2 #:equality eq? #:zero 2.0)]}
@defidform[Procedure]{is the supertype of all function types.} @defidform[Procedure]{is the supertype of all function types. The @racket[Procedure]
type corresponds to values that satisfy the @racket[procedure?] predicate.
Because this type encodes @emph{only} the fact that the value is a procedure, and
@emph{not} its argument types or even arity, the type-checker cannot allow values
of this type to be applied.
For the types of functions with known arity and argument types, see the @racket[->]
type constructor.
@ex[
(: my-list Procedure)
(define my-list list)
(my-list "zwiebelkuchen" "socca")
]
}
@defform[(U t ...)]{is the union of the types @racket[t ...]. @defform[(U t ...)]{is the union of the types @racket[t ...].