Syntactic sugar. Therefore they don’t offer features that could not otherwise be reached through present functions. Rather, these new options permit a more expressive and succinct syntax to be used 近年来这方面的研究开发主要是围绕结构 、 合成 、 表征和催化反应等方面开展的. While It's not at all noticeable how to augment a direct member access like foo.num https://residentialprojectingreaternoida.blogspot.com