5.3.4
11 Experimental Features
These features are currently experimental and subject to change.
syntax
(Class args ...)
A type constructor for typing classes created using racket/class.
syntax
(Instance c)
A type constructor for typing objects created using racket/class.
syntax
(declare-refinement id)
Declares id to be usable in
refinement types.
syntax
(Refinement id)
Includes values that have been tested with the
predicate id, which must have been specified with
declare-refinement.
syntax
(define-typed-struct/exec forms ...)
Defines an executable structure.