[libcxx-commits] [PATCH] D103840: [libcxx][ranges][nfc] Factor out common logic in the copy algorithms.

[Zoe Carver via Phabricator via libcxx-commits]

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Factors out common logic from `std::copy`, `std::copy_backward`, `std::copy_if`, and `std::copy_n` into `__copy_*_impl`. Also adds `__in_out_result` which is the return type for the impl function. This will make adding support for the ranges overloads super easy.

This is an example of how this will be done for //all// algorithms. Once this lands, I'll update all the algorithms, so let's get this review right.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D103840

Files:
  libcxx/include/CMakeLists.txt
  libcxx/include/__algorithm/copy.h
  libcxx/include/__algorithm/in_out_result.h
  libcxx/include/algorithm
  libcxx/include/module.modulemap
  libcxx/test/std/algorithms/robust_against_adl.pass.cpp

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