antd

z-index

antd的z-index会影响交互，比如 tooltip的children是一个absolute，如果它的z-index低于其他内容，即使可见，也不能实现tooltip

Structure and Interpretation of Computer Programs

Building Abstractions with Functions

Computational processes are abstract beings that inhabit computers. As they evolve, processes manipulate other abstract things called data. The evolution of a process is directed by a pattern of rules called a program. People create programs to direct processes
计算流程 是居住在计算机中的抽象生物。 随着它们的演化，流程 会操纵称为 数据 的其他抽象事物。 流程的演变由称为程序的规则模式指导。人们创建程序来指导流程。

The programs we use to conjure processes are like a sorcerer’s spells.
我们用来召唤过程的程序就像巫师的咒语一样。

Well-designed computational systems, like well-designed automobiles or nuclear reactors, are designed in a modular manner, so that the parts can be constructed, replaced, and debugged separately.
好的计算系统都是模块化设计的，方便单独地构建，替换和调试。

general-purpose programming language
通用编程语言; 通用的程序设计语言;

Its lexically scoped first-class functions and their syntactic support through lambda expressions provide direct and concise access to functional abstraction, and dynamic typing allows the adaptation to remain close to the Scheme original throughout the book.