[libc++] add global variable template std::views::empty
authorHui Xie <hui.xie1990@gmail.com>
Tue, 5 Apr 2022 16:17:02 +0000 (18:17 +0200)
committerMark de Wever <koraq@xs4all.nl>
Tue, 5 Apr 2022 16:18:16 +0000 (18:18 +0200)
commitc00df57b86441a94578fe1deca70e538b6b74483
tree70205f00a6fb0e1b83bdfb9ef0ef7517be3fb995
parentae0fb61303f84f64d4a84dedf72036672741f87f
[libc++] add global variable template std::views::empty

[libc++] add global variable template std::views::empty
Note it is neither a range adaptor, nor a CPO. It is simplify a global variable template.

Reviewed By: #libc, Mordante

Differential Revision: https://reviews.llvm.org/D122996
libcxx/include/__ranges/empty_view.h
libcxx/include/ranges
libcxx/test/std/ranges/range.adaptors/range.empty/views.empty.pass.cpp [new file with mode: 0644]