mdspan: make submdspan with compile-time slices have compile-time extents
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Description
If users pass an integral_constant or tuple of integral_constant as a slice specifier for submdspan, then make the specification of submdspan require that the returned mdspan have corresponding compile-time extents.
This issue is for the specification. (Given that P0009 passed WG21 Plenary vote today, the specification of submdspan will happen in a separate follow-on paper to be written.) The implementation already has a PR that does this ( https://github.com/kokkos/mdspan/pull/159 ).
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Review the issue requirements for submdspan and the linked implementation PR #159 first. The repository description indicates this work belongs in an ISO C++ proposal; done means producing the separate follow-on specification paper defining compile-time extents for integral_constant slice specifiers.
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Assessment
- Tech stack
- cpp
- Domain
- documentation
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 25/100