if(!dojo._hasResource["dojox.lang.functional"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.lang.functional"] = true;
dojo.provide("dojox.lang.functional");

dojo.require("dojox.lang.functional.lambda");
dojo.require("dojox.lang.functional.array");
dojo.require("dojox.lang.functional.object");

}