I have a project that consists of playhaven.downloader.run and
playhaven.downloader.core. Run is defined like this (for brevity's
sake, I've left out a lot of the code; let me know if I missed
something important):
;; run.clj
(ns playhaven.downloader.run
(:use playhaven.downloader.core
clojure.contrib.command-line)
(:gen-class))
(defn -main ... )
My first attempt at core.clj was this:
;; core.clj - bad!
(ns playhaven.downloader.core
(:require clj-http.client :as client))
...but it really should have been this:
;; core.clj - good!
(ns playhaven.downloader.core
(:require [clj-http.client :as client]))
This is obviously a dumb newbie error (I left out a pair of brackets
if you missed it). However, the error message I got wasn't much help:
Exception in thread "main" java.lang.ExceptionInInitializerError
(NO_SOURCE_FILE:1)
at clojure.lang.Compiler.eval(Compiler.java:5440)
at clojure.lang.Compiler.eval(Compiler.java:5415)
at clojure.lang.Compiler.eval(Compiler.java:5391)
at clojure.core$eval.invoke(core.clj:2382)
at clojure.main$eval_opt.invoke(main.clj:235)
at clojure.main$initialize.invoke(main.clj:254)
at clojure.main$null_opt.invoke(main.clj:279)
at clojure.main$main.doInvoke(main.clj:354)
at clojure.lang.RestFn.invoke(RestFn.java:422)
at clojure.lang.Var.invoke(Var.java:369)
at clojure.lang.AFn.applyToHelper(AFn.java:165)
at clojure.lang.Var.applyTo(Var.java:482)
at clojure.main.main(main.java:37)
Caused by: java.lang.ExceptionInInitializerError
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at clojure.lang.RT.loadClassForName(RT.java:1578)
at clojure.lang.RT.load(RT.java:399)
at clojure.lang.RT.load(RT.java:381)
at clojure.core$load$fn__4511.invoke(core.clj:4905)
at clojure.core$load.doInvoke(core.clj:4904)
at clojure.lang.RestFn.invoke(RestFn.java:409)
at clojure.core$load_one.invoke(core.clj:4729)
at clojure.core$compile$fn__4516.invoke(core.clj:4916)
at clojure.core$compile.invoke(core.clj:4915)
at user$eval7.invoke(NO_SOURCE_FILE:1)
at clojure.lang.Compiler.eval(Compiler.java:5424)
... 12 more
Caused by: java.lang.ClassCastException: java.lang.Boolean cannot be
cast to clojure.lang.Symbol (core.clj:1)
at clojure.lang.Compiler$InvokeExpr.eval(Compiler.java:2911)
at clojure.lang.Compiler.compile1(Compiler.java:5933)
at clojure.lang.Compiler.compile1(Compiler.java:5923)
at clojure.lang.Compiler.compile(Compiler.java:5992)
at clojure.lang.RT.compile(RT.java:368)
at clojure.lang.RT.load(RT.java:407)
at clojure.lang.RT.load(RT.java:381)
at clojure.core$load$fn__4511.invoke(core.clj:4905)
at clojure.core$load.doInvoke(core.clj:4904)
at clojure.lang.RestFn.invoke(RestFn.java:409)
at clojure.core$load_one.invoke(core.clj:4729)
at clojure.core$load_lib.doInvoke(core.clj:4766)
at clojure.lang.RestFn.applyTo(RestFn.java:143)
at clojure.core$apply.invoke(core.clj:542)
at clojure.core$load_libs.doInvoke(core.clj:4800)
at clojure.lang.RestFn.applyTo(RestFn.java:138)
at clojure.core$apply.invoke(core.clj:544)
at clojure.core$use.doInvoke(core.clj:4880)
at clojure.lang.RestFn.invoke(RestFn.java:422)
at playhaven.downloader.run$loading__4410__auto__.invoke(run.clj:1)
at playhaven.downloader.run__init.load(Unknown Source)
at playhaven.downloader.run__init.<clinit>(Unknown Source)
... 25 more
Caused by: java.lang.ClassCastException: java.lang.Boolean cannot be
cast to clojure.lang.Symbol
at clojure.core$alias.invoke(core.clj:3306)
at clojure.core$load_lib.doInvoke(core.clj:4774)
at clojure.lang.RestFn.applyTo(RestFn.java:143)
at clojure.core$apply.invoke(core.clj:542)
at clojure.core$load_libs.doInvoke(core.clj:4800)
at clojure.lang.RestFn.applyTo(RestFn.java:138)
at clojure.core$apply.invoke(core.clj:542)
at clojure.core$require.doInvoke(core.clj:4869)
at clojure.lang.RestFn.invoke(RestFn.java:437)
at playhaven.downloader.core$loading__4410__auto__.invoke(core.clj:1)
at clojure.lang.AFn.applyToHelper(AFn.java:159)
at clojure.lang.AFn.applyTo(AFn.java:151)
at clojure.lang.Compiler$InvokeExpr.eval(Compiler.java:2906)
... 46 more
It would be awesome if this error message at least said something like
"syntax error in core.clj". I was going to report this to the ticket
tracker, but couldn't figure out where to do that. Could someone
point me in the right direction?
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