Predicate Redux :: reducerToStateStep

Holds if pred -> succ should be a step from a reducer to a state access affected by the reducer.

Import path


                                import javascript


                            
                                
                                    predicate
                                
                                 
                            
                            
                                reducerToStateStep
                            
                            
                                (
                                
                                    
                                        Node
                                    
                                     
                                    pred
                                
                                , 
                                
                                    
                                        Node
                                    
                                     
                                    succ
                                
                                )