Hi,

On Wed, May 05, 2010 at 02:56:09PM -0700, gary ng wrote:

> I have a question related to this.
> 
> (ns foo (:use clojure.core))
> 
> (defn + [x y] x)
> 
> '+' is already referred because of the use and is an error right now. But
> this is a legitimate use of the symbol as 'foo' can be matrix and matrix
> addition is different from standard number addition. Or is there a better
> for these kind of primitive symbols overload in clojure or symbol overload
> in general  ?
> 
> :exclude may not be what I want here as I may still call for the basic + on
> numbers. In Haskell for example, this is not an issue because of its type
> class support so I can have multiple '+' doing different things.

Right now, this can be handled as:

(ns foo
  (:refer-clojure :as core :exclude (+)))

(defn +
  [matrix1 matrix2]
  ... (core/+ num1 num2) ...)


Sincerely
Meikel

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