Method swapRoot

src/jvm/clojure/lang/Var.java:287–293

(Object root)

}

synchronized void swapRoot(Object root){
	validate(getValidator(), root);
	Object oldroot = this.root;
	this.root = root;
	++rev;
    notifyWatches(oldroot,root);
}

synchronized public void unbindRoot(){
	this.root = new Unbound(this);