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P0009R18 <mdspan> #2909

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StephanTLavavej opened this issue Jul 25, 2022 · 8 comments · Fixed by #3972
Closed

P0009R18 <mdspan> #2909

StephanTLavavej opened this issue Jul 25, 2022 · 8 comments · Fixed by #3972
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cxx23 C++23 feature fixed Something works now, yay! mdspan C++23 mdspan
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C++23 Features

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@StephanTLavavej
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StephanTLavavej commented Jul 25, 2022 •
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WG21-P0009R18 <mdspan>
WG21-P2599R2 mdspan: index_type, size_type
WG21-P2604R0 mdspan: data_handle_type, data_handle(), exhaustive
WG21-P2613R1 mdspan: empty()
WG21-P2763R1 Fixing layout_stride's Default Constructor For Fully Static Extents
LWG-3876 Default constructor of std::layout_meow::mapping misses precondition

Feature-test macro (expected):

#define __cpp_lib_mdspan 202207L

Internal VS-PR-420058 has taught the IDE about this new extensionless header - thanks @CaseyCarter!
@StephanTLavavej StephanTLavavej added the cxx23 C++23 feature label Jul 25, 2022
@StephanTLavavej StephanTLavavej added this to Available in C++23 Features Jul 25, 2022
@MattStephanson
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I looked at this around the new year and implemented large parts of R14. I'd like to continue working on it, but I'd appreciate a ping if anyone decides to work on it themselves.

@StephanTLavavej StephanTLavavej moved this from Available to Investigating in C++23 Features Jul 26, 2022
@StephanTLavavej
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@MattStephanson Cool! I'll mark this as Investigating to reflect your progress.

@StephanTLavavej StephanTLavavej mentioned this issue Feb 12, 2023
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@StephanTLavavej StephanTLavavej moved this from Investigating to Available in C++23 Features Feb 26, 2023
@StephanTLavavej
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@MattStephanson has started a feature branch, feature/mdspan2, with his partial implementation. 😸 I'm marking this feature as available now - if anyone is interested in continuing this work, it would be a good idea to coordinate on Discord.

@StephanTLavavej StephanTLavavej moved this from Available to Investigating in C++23 Features Mar 4, 2023
@vickoza
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vickoza commented Mar 16, 2023 •
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I would like to continue @MattStephanson the work on this feature.

@StephanTLavavej
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@vickoza We're working in a multi-collaborator feature branch, feature/mdspan2, with @JMazurkiewicz regularly making changes. It would be best to join the #mdspan channel on the STL Discord to coordinate work. Thanks!

@vickoza
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vickoza commented Mar 17, 2023

How do I join the STL Discord? mdspan is a feature I would like to use

@JMazurkiewicz
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Here you go: https://discord.gg/XWanNww

@vickoza
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vickoza commented Mar 17, 2023

thank you

@StephanTLavavej StephanTLavavej added the mdspan C++23 mdspan label Jun 21, 2023
@StephanTLavavej StephanTLavavej mentioned this issue Jul 5, 2023
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@StephanTLavavej StephanTLavavej moved this from Investigating to Reviewing PR in C++23 Features Aug 9, 2023
@StephanTLavavej StephanTLavavej mentioned this issue Aug 16, 2023
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C++23 Features automation moved this from Reviewing PR to Done Sep 14, 2023
@StephanTLavavej StephanTLavavej added the fixed Something works now, yay! label Sep 14, 2023
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cxx23 C++23 feature fixed Something works now, yay! mdspan C++23 mdspan
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P0009R18 <mdspan> StephanTLavavej/STL
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@StephanTLavavej @vickoza @JMazurkiewicz @MattStephanson