息流使用宝典: 推荐学生朋友们看看

pixelfall: C标准里提到：The name "lvalue" comes originally from the assignment expression E1 = E2, in which the left operand E1 is required to be a (modifiable) lvalue. It is perhaps better considered as representing an object "locator value". What is sometimes called "rvalue" is in this document described as the "value of an expression". An obvious example of an lvalue is an identifier of an object. As a further example, if E is a unary expression that is a pointer to an object, *E is an lvalue that designates the object to which E points.

Violetssssss: 谢谢楼主的分享。我自己的开发效率太低了，最近使用了一个叫飞布的平台，在上面可以快速搭建api接口，能快速完成后端开发，推荐给大家：fireboom.io

Wayne96: 会了哈哈，直接调命令台输class就行，太方便了

Wayne96: 啊这，我会新建文件，但是建的文件一个字也没有阿，我想自己建一个class，不是白纸.class😩