可以把 React hook 理解为 @decorator(装饰器) 的作用吗? - V2EX
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lisisi
V2EX    Javascript

可以把 React hook 理解为 @decorator(装饰器) 的作用吗?

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  •   lisisi 2019-06-25 23:29:12 +08:00 6671 次点击
    这是一个创建于 2329 天前的主题,其中的信息可能已经有所发展或是发生改变。
    都在不破坏 /不重写原函数的基础上,实现了新的功能。hook 和 @decorator 原理上有区别吗?
    7 条回复    2019-07-26 20:43:21 +08:00
    ech0x
        1
    ech0x  
       2019-06-26 06:46:17 +08:00 via iPhone
    “ Hooks are functions that let you “ hook into ” React state and lifecycle features from function components. Hooks don ’ t work inside classes they let you use React without classes. (We don ’ t recommend rewriting your existing components overnight but you can start using Hooks in the new ones if you ’ d like.)”
    我不懂 Javascript,不过看这个描述应该是不一样的 hook 跟 react 生命周期有关。
    python 的装饰器只是高级函数的语法糖而已。
    jason94
        2
    jason94  
       2019-06-26 07:57:09 +08:00
    两个完全不一样的东西~~建议补一补基础,先把两者的定义弄明白了。
    byenow
        3
    byenow  
       2019-06-26 13:22:16 +08:00
    @decorator 是对 Class 的修改,基于 Class Components,React Hooks 基于 Function Components
    bestie
        4
    bestie  
       2019-06-27 09:44:08 +08:00
    decorator 更类似于高阶函数( HOC )
    azh7138m
        5
    azh7138m  
       2019-07-09 15:49:21 +08:00
    完全不一样的东西,建议阅读 https://github.com/acdlite/recompose
    decorator 怎么就 hoc 了。。。
    ahonn
        6
    ahonn  
       2019-07-21 11:15:57 +08:00
    看完这个你就懂了
    kwrush
        7
    kwrush  
       2019-07-26 20:43:21 +08:00
    @bestie hoc 就是装饰器模式吧
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