cej38 <[email protected]> writes:
Hi,
> REPL started; server listening on localhost port 19922
> user=> (refer '[clojure.core :exclude [==]])
> ClassCastException clojure.lang.PersistentVector cannot be cast to
> clojure.lang.Symbol clojure.core/find-ns (core.clj:3657)
The syntax is wrong. You probably want
(refer-clojure :exclude [==])
which is equivalent to
(refer 'clojure.core :exclude [==])
But that doesn't work for the user namespace at the REPL, because that
refers clojure completely when started, i.e., == refers already to
clojure.core/==, and the above won't revert that.
So better create a new namespace:
user> (ns core-logic-playground
(:refer-clojure :exclude [==])
(:use clojure.core.logic))
core-logic-playground> (meta #'==)
{:arglists ([u v]), :ns #<Namespace clojure.core.logic>,
:name ==, :doc "A goal that attempts to unify terms u and v.",
:macro true,
:line 832, :file "clojure/core/logic.clj"}
Bye,
Tassilo
--
(What the world needs (I think) is not
(a Lisp (with fewer parentheses))
but (an English (with more.)))
Brian Hayes, http://tinyurl.com/3y9l2kf
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