Method assocEx

src/jvm/clojure/lang/PersistentHashMap.java:161–165

(Object key, Object val)

}

public IPersistentMap assocEx(Object key, Object val) {
	if(containsKey(key))
		throw Util.runtimeException("Key already present");
	return assoc(key, val);
}

public IPersistentMap without(Object key){
	if(key == null)