Hi @alexmiller

I’ve been following along through PC 3rd, and hit a bump on page 122 - the ‘name’ format for the spec seems incorrect. I went back and it looked like adding a namespace might fix it, but that didn’t help either, I still get the ‘invalid token’ error.

Code:
(ns net.solarwinter
(:require [clojure.spec.alpha :as s]))

(s/def ::music/id uuid?)

Evaluating this produces:

2. Unhandled clojure.lang.Compiler$CompilerException
   Error compiling spec.clj at (4:18)
   #:clojure.error{:phase :read-source,
   :line 4,
   :column 18,
   :source
   “/Users/paul/Documents/Programming/clojure/spec.clj”}
   Compiler.java: 7647 clojure.lang.Compiler/load
   REPL: 1 user/eval7690
   REPL: 1 user/eval7690
   Compiler.java: 7181 clojure.lang.Compiler/eval
   Compiler.java: 7136 clojure.lang.Compiler/eval
   core.clj: 3202 clojure.core/eval
   core.clj: 3198 clojure.core/eval
   interruptible_eval.clj: 87 nrepl.middleware.interruptible-eval/evaluate/fn/fn
   AFn.java: 152 clojure.lang.AFn/applyToHelper
   AFn.java: 144 clojure.lang.AFn/applyTo
   core.clj: 667 clojure.core/apply
   core.clj: 1977 clojure.core/with-bindings*
   core.clj: 1977 clojure.core/with-bindings*
   RestFn.java: 425 clojure.lang.RestFn/invoke
   interruptible_eval.clj: 87 nrepl.middleware.interruptible-eval/evaluate/fn
   main.clj: 437 clojure.main/repl/read-eval-print/fn
   main.clj: 437 clojure.main/repl/read-eval-print
   main.clj: 458 clojure.main/repl/fn
   main.clj: 458 clojure.main/repl
   main.clj: 368 clojure.main/repl
   RestFn.java: 1523 clojure.lang.RestFn/invoke
   interruptible_eval.clj: 84 nrepl.middleware.interruptible-eval/evaluate
   interruptible_eval.clj: 56 nrepl.middleware.interruptible-eval/evaluate
   interruptible_eval.clj: 152 nrepl.middleware.interruptible-eval/interruptible-eval/fn/fn
   AFn.java: 22 clojure.lang.AFn/run
   session.clj: 218 nrepl.middleware.session/session-exec/main-loop/fn
   session.clj: 217 nrepl.middleware.session/session-exec/main-loop
   AFn.java: 22 clojure.lang.AFn/run
   Thread.java: 833 java.lang.Thread/run

3. Caused by java.lang.RuntimeException
   Invalid token: ::music/id

I’m on Clojure 1.10.3 (java version “13.0.1” 2019-10-15, macOS Monterey, but I don’t think those should matter).