MS Visual Studio 2013 中没有 <optional> - 怎么办?
No <optional> in MS Visual Studio 2013 - what to do?
我想使用 std::experimental::optional
,但 MSVS 2013 告诉我找不到 header。
- 为什么没有?
- 我可以基于其他地方的代码推出自己的产品吗?可能是 C++14 提案?
std::experimental::optional
originates from the Boost.Optional library, and this implementation works well in Visual C++ 12.0 (though it differs a little). Reference single-header implementation, based on the N3793 proposal paper, can be found here.
可从 Visual C++ Team blog, from this post in particular. A set of header files of the Standard Library implementation (and some extensions) from Microsoft can be viewed here.
中找到 Visual Studio 附带的受支持的 C++11/14/1z 核心和库功能的最新列表
我发现此实现使用 MSVC2013 进行编译。请注意,仅编译,不能保证其他所有内容。
https://github.com/mapbox/variant/blob/master/include/mapbox/optional.hpp
我在 msvc2015 中使用了这个并且它有效:
https://raw.githubusercontent.com/akrzemi1/Optional/master/optional.hpp
我想使用 std::experimental::optional
,但 MSVS 2013 告诉我找不到 header。
- 为什么没有?
- 我可以基于其他地方的代码推出自己的产品吗?可能是 C++14 提案?
std::experimental::optional
originates from the Boost.Optional library, and this implementation works well in Visual C++ 12.0 (though it differs a little). Reference single-header implementation, based on the N3793 proposal paper, can be found here.
可从 Visual C++ Team blog, from this post in particular. A set of header files of the Standard Library implementation (and some extensions) from Microsoft can be viewed here.
中找到 Visual Studio 附带的受支持的 C++11/14/1z 核心和库功能的最新列表我发现此实现使用 MSVC2013 进行编译。请注意,仅编译,不能保证其他所有内容。
https://github.com/mapbox/variant/blob/master/include/mapbox/optional.hpp
我在 msvc2015 中使用了这个并且它有效:
https://raw.githubusercontent.com/akrzemi1/Optional/master/optional.hpp