[libcxx-commits] [PATCH] D100269: [libcxx] adds concept `range` and range aliases

[Christopher Di Bella via Phabricator via libcxx-commits]

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- `std::ranges::range`
- `std::ranges::sentinel_t`
- `std::ranges::range_difference_t`
- `std::ranges::range_value_t`
- `std::ranges::range_reference_t`
- `std::ranges::range_rvalue_reference_t`

`range_size_t` depends on `sized_range` and will be added alongside it.

Implements parts of:

- P0896R4 The One Ranges Proposal`

Depends on D100255 <https://reviews.llvm.org/D100255>.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D100269

Files:
  libcxx/include/CMakeLists.txt
  libcxx/include/__ranges/concepts.h
  libcxx/include/ranges
  libcxx/test/std/ranges/range.range/helper_aliases.compile.pass.cpp
  libcxx/test/std/ranges/range.range/range.compile.pass.cpp
  libcxx/test/std/ranges/range.range/sentinel_t.compile.pass.cpp
  libcxx/test/support/test_range.h

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