AjScript.Predicates.IsFalse C# (CSharp) Метод

        public static bool IsFalse(object obj)
        {
            if (obj == null)
                return true;

            if (obj == Undefined.Instance)
                return true;

            if (obj is bool)
                return !(bool)obj;

            if (obj is int)
                return (int)obj == 0;

            if (obj is string)
                return string.IsNullOrEmpty((string)obj);

            if (obj is long)
                return (long)obj == 0;

            if (obj is short)
                return (short)obj == 0;

            if (obj is double)
                return (double)obj == 0;

            if (obj is float)
                return (float)obj == 0;

            return false;
        }