On Wed, Jun 23, 2010 at 8:36 AM, Manuel <manuel.weik...@googlemail.com> wrote:
> I created a new project using leinigen; told it to download and
> install clojure-contrib (along with some other things), which it does,
> and everything works fine except that I can't use
> clojure.contrib.math.
>
> If I try (:use clojure.contrib.math) I always get:
>
> clojure.contrib.math
>  [Thrown class java.lang.ClassNotFoundException]

This isn't actually a classpath problem. If you're working in the repl
you should use this instead:

(use 'clojure.contrib.math)

The :use notation is intended for being embedded in an ns declaration
at the top of your source files. If you're just going to have a
regular function call then you need to quote the library name. Take a
look at contrib for an example of the ns form:

http://github.com/richhickey/clojure-contrib/blob/master/src/main/clojure/clojure/contrib/pprint.clj#L27

I know this is confusing! There's talk of overhauling use/require/ns,
etc. to make it more uniform:
http://www.assembla.com/spaces/clojure/tickets/272-load-ns-require-use-overhaul

-Phil

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