C++Now 2019: Chandler Carruth “A clean and minimal map API”

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Only sane and efficient map API. And it still allows many many different approaches to the underlying implementation which is grate. unordered_map is a mess. There is one operation which I miss tho, `clone` in the API itself, with some lifetime restrictions. Some maps can implement `clone` way more efficiently than just copying all the data, so just having access to the iterators or even the copy constructor might not be good enough for this.

movaxh