define(['../array/slice', '../array/contains'], function(slice, contains){

    /**
     * Return a copy of the object, filtered to only contain properties except the blacklisted keys.
     */
    function omit(obj, var_keys){
        var keys = typeof arguments[1] !== 'string'? arguments[1] : slice(arguments, 1),
            out = {};

        for (var property in obj) {
            if (obj.hasOwnProperty(property) && !contains(keys, property)) {
                out[property] = obj[property];
            }
        }
        return out;
    }

    return omit;

});