Hello.
I'm reading HTDP, and not understand one data definition in the chapter
22.3:
; An XMachine is a nested list of this shape:
; `(machine ((initial ,FSM-State)) [List-of X1T])
; An X1T is a nested list of this shape:
; `(action ((state ,FSM-State) (next ,FSM-State)))
With this definition of XMachine you can't received result like in constant
definition xm0 above in this chapter:
(define xm0
'(machine ((initial "red"))
(action ((state "red") (next "green")))
(action ((state "green") (next "yellow")))
(action ((state "yellow") (next "red")))))
I think it will be right to define XMachine like this:
; An XMachine is a nested list of this shape:
; `(machine ((initial ,FSM-State)) ,@[List-of X1T])
Am I wrong?
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