[libcxx-commits] [PATCH] D119620: [libc++][ranges] Implement Ranges changes to `istream{, buf}_iterator`.

[Konstantin Varlamov via Phabricator via libcxx-commits]

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The changes from the One Ranges Proposal amount to adding:

- a constructor that takes a `default_sentinel_t` and is equivalent to the default constructor;
- an `operator==` that compares the iterator to `default_sentinel_t`.

The original proposal defined two overloads for `operator==` (different
argument order) as well as `operator!=`. This has been removed by
P1614 <https://wg21.link/p1614>.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D119620

Files:
  libcxx/docs/Status/RangesPaper.csv
  libcxx/include/__iterator/istream_iterator.h
  libcxx/include/__iterator/istreambuf_iterator.h
  libcxx/include/iterator
  libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.cons/default.pass.cpp
  libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.ops/equal.pass.cpp
  libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator.cons/default.pass.cpp
  libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_op!=/not_equal.pass.cpp
  libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_op==/equal.pass.cpp

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