I keep running into the following problem trying to supply agent
validation function. Here is sample code from page 135 (from book
version beta 5)

(use '[clojure.contrib.except :only (throw-if)])
(def counter (agent 0 #(throw-if (not (number? %)) "not a number")))

triggers the following exception:

java.lang.IllegalArgumentException: No value supplied for key: user
$fn__1...@89f302 (NO_SOURCE_FILE:2)
[Thrown class clojure.lang.Compiler$CompilerException]

I’m using the latest versions of clojure (r1216) and clojure-contrib
(r374) on Mac OS X 10.5.6, Java version "1.5.0_16"

Many thanks,

Telman



On Jan 16, 8:49 am, Stuart Halloway <stuart.hallo...@gmail.com> wrote:
> Long, long ago (Tuesday) when Beta 5 of the book shipped, there were  
> some breakages in the sample code due to changes in clojure-contrib. I  
> believe everything is now fixed in the github repository 
> (http://github.com/stuarthalloway/programming-clojure
> ).
>
> Summary of the issues:
>
> 1. clojure.contrib.seq-util/includes? changed the argument order for  
> consistency with other operations. This caused problems with the  
> snippet web app; Compojure is now updated to match the change in  
> contrib.
>
> 2. clojure.contrib.sql/with-results has been removed and replaced with  
> with-query-results. This broke the snippet model. The code is now  
> fixed and I will update the prose in the next Beta.
>
> 3. A change to clojure.lang.Util necessitated a _clean_ rebuild of  
> contrib and compojure. I have rebuild these dependencies in the lib  
> directory.
>
> 4. A change to clojure.contrib.test-is.is broke a few unit tests. The  
> book doesn't reference any of these tests directly, but they are now  
> fixed in the code. You can run the whole test suite with ./runtests.sh.
>
> Let me know if  you find any other issues!
>
> Thanks,
> Stuart
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