#lang racket

;;; dds/generic

;;; Provides the definition of several generic interfaces for discrete
;;; dynamical systems.

(require racket/generic)

(provide
 ;; Generics
 gen:dds
 ;; Functions
 (contract-out [dds-step-one (-> dds? any/c (set/c any/c))])
 ;; Predicates
 (contract-out [dds? (-> any/c boolean?)]))

;;; A discrete dynamical system.
(define-generics dds
  ;; Given a dds and a state, produce the next states of the dds.
  (dds-step-one dds state))