Mono.Rocks.Check.Selector C# (CSharp) Метод

        public static void Selector(object selector)
        {
            if (selector == null)
                throw new ArgumentNullException ("selector");
        }

        public static TResult With <TSource, TResult> (this TSource self, Func <TSource, TResult> selector)
        {
            // Permit self to be null
            Check.Selector(selector);

            return(selector(self));
        }