[llvm-dev] ONE WEEK until components removed from namespace std::experimental

Marshall Clow via llvm-dev llvm-dev at lists.llvm.org
Mon Jan 29 08:27:51 PST 2018

In the thread titled "RFC: Plan for removing components from namespace
std::experimental", (started last April) I put forward a timetable for
removing things from libc++ that had become duplicates of other things in

Specifically, things that were in namespace "std::experimental" and "std"
both (and subtly different in both).

In that RFC, I proposed to let a period of time pass before removal, to let
people manage the transition.

That period has now passed, and I am planning on removing them on

I have created a status page that shows exactly which components are slated
for removal from std::experimental. That page is at

The ones that will probably have the most impact are:
   * std::experimental::string_view
   * std::experimental::any
   * std::experimental::optional

There are drop-in replacements:
   * std::string_view
   * std::any
   * std::optional

-- Marshall
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