The doc doesn't claim that :as works with use.
But it works well with require :

user> (ns foo (:require [clojure.contrib.zip-filter :as zf]))

HTH,

-- 
Laurent

2009/3/24 Tom Emerson <tremer...@gmail.com>

>
> Hi all,
>
> I'm getting an error I don't quite understand. Starting Clojure
> (r1329) and entering
>
> user> (ns foo (:use [clojure.contrib.zip-filter :as zf]))
>
> I get an exception,
>
> java.lang.IllegalStateException: descendants already refers to:
> #'clojure.core/descendants in namespace: foo (NO_SOURCE_FILE:0)
>  [Thrown class clojure.lang.Compiler$CompilerException]
>
> I notice that in zip_filter.clj the namespace declaration contains
>
> (:refer-clojure :exclude (descendants ancestors))
>
> Do I need to do this as well if I'm going to use zip-filter? It looks
> like I do, though this isn't (explicitly) documented.
>
> Thanks for any clarification.
>
>    -tree
>
> --
> Tom Emerson
> tremer...@gmail.com
> http://treerex.blogspot.com/
>
> >
>

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