Move <optional> into include/experimental, and into the std::experimental namespace, since it's not part of C++14, but of an upcoming TS

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@194867 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2013-11-15 22:42:10 +00:00
parent ec5714f27a
commit 0cdbe60481
59 changed files with 523 additions and 409 deletions

View File

@@ -11,12 +11,16 @@
// template <class U> T optional<T>::value_or(U&& v) &&;
#include <optional>
#include <experimental/optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
using std::experimental::optional;
using std::experimental::in_place_t;
using std::experimental::in_place;
struct Y
{
int i_;
@@ -42,24 +46,24 @@ int main()
{
#if _LIBCPP_STD_VER > 11
{
std::optional<X> opt(std::in_place, 2);
optional<X> opt(in_place, 2);
Y y(3);
assert(std::move(opt).value_or(y) == 2);
assert(*opt == 0);
}
{
std::optional<X> opt(std::in_place, 2);
optional<X> opt(in_place, 2);
assert(std::move(opt).value_or(Y(3)) == 2);
assert(*opt == 0);
}
{
std::optional<X> opt;
optional<X> opt;
Y y(3);
assert(std::move(opt).value_or(y) == 3);
assert(!opt);
}
{
std::optional<X> opt;
optional<X> opt;
assert(std::move(opt).value_or(Y(3)) == 4);
assert(!opt);
}