Discuss / Java / map 是个啥含义 和foreach 有什么区别哇?

map 是个啥含义 和foreach 有什么区别哇?

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逐日者asd

#1 Created at ... [Delete] [Delete and Lock User]

map 是个啥含义 和foreach 有什么区别哇?

MrEnjoyLife

#2 Created at ... [Delete] [Delete and Lock User]

foreach是遍历,map是把映射

不器

#3 Created at ... [Delete] [Delete and Lock User]

map是映射,foreach是遍历,前者没有输出,后者有输出。

两者入参不一样,map需要Function<T,R>接口的实现对象,foreach需要Consumer<T>接口的实现对象


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