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@moonlightbox(Johnny Chu)

C++ - What is mapped_type, key_type and value_type?

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Last updated at Posted at 2018-10-02

In other words, it's just alias name. And this is C++ 11 standard.

Member type Definition
key_type Key
mapped_type T
value_type std::pair<const Key, T> 
value_type = pair<const key_type, mapped_type>

https://en.cppreference.com/w/cpp/container/map
https://stackoverflow.com/questions/31359960/what-is-mapped-type-and-key-type
https://blog.scloudyy.com/posts/4c435fff/

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