[llvm-branch-commits] [STLExtras] Add `take_begin` and `take_end` range adaptors. (PR #164542)

[Jakub Kuderski via llvm-branch-commits]

kuhar wrote:

I'm fine with the latter options -- cleaning up drop_begin/end should be very quick since there's no issue with input iterators. That code probably predates std::next/prev being constexpr. I don't think it blocks this cleanup should block this PR though. 

https://github.com/llvm/llvm-project/pull/164542