[Solved] Access index of current element in range-for loop c++20

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After looking into defining a view interface, I decided to use range-v3.

There are several things missing from std::ranges https://stackoverflow.com/a/68172842/11998382, and until they are added in future standards, it is sensible to use range-v3 rather than repeatedly attempting non-trivial implementations yourself.

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solved Access index of current element in range-for loop c++20