Re: [boost] Does anybody know why boost::array does not support multiple dimensions?

7 Jan 2022

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Von: "Seth via Boost" 
On Thu, Jan 6, 2022, at 7:47 AM, Helmut Zeisel via Boost wrote:
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To avoid further reinventing the wheel: is there some multi dimensional
array index adapter available in boost or in some other free librarry?
Helmut
Other than boost::multi_array_ref I posted earlier in this conversation (https://godbolt.org/z/o4x6vGhW5) - I don't really know. Is there something wrong with that one, though?
Seth
I do not know whether boost::multi_array_ref is suitable fpr the purposes of the original question.

For more general applications, according to my current understanding, boost::multi_array_ref has several restrictions:

1) boost::multi_array_ref does not own the memory (which creates at least the memory overhead of one pointer)
2) boost::multi_array_ref is not constexpr (maybe this can be fixed)
3) boost::multi_array_ref only works for a contiguous block of elements
4) boost::multi_array_ref supports only rectangular shapes (no other shapres like e.g. triangular matrices)

Helmut