C++17: "contiguous iterators"

C++17 added a new type of iterator called a contiguous iterator. It is a refinement of the random access iterator. The added constraints are that the elements are contiguous in memory. An example of this is vector, which can be used to interface with C.

References:

https://en.wikipedia.org/wiki/C%2B%2B17

https://isocpp.org/files/papers/n4284.html