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Use experimental/optional if available

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This commit is contained in:
Dmitry Marakasov 2014-12-25 22:17:44 +03:00
parent e8c0218fe4
commit 74bff27f86
1 changed files with 21 additions and 0 deletions
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21
SDL2pp/Optional.hh
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@ -22,6 +22,25 @@
#ifndef SDL2PP_OPTIONAL_HH
#define SDL2PP_OPTIONAL_HH
#include <SDL2pp/Config.hh>
#if defined(SDL2PP_WITH_EXPERIMENTAL_OPTIONAL)
#include <experimental/optional>
namespace SDL2pp {
template<typename T>
using Optional = std::experimental::optional<T>;
using BadOptionalAccess = std::experimental::bad_optional_access;
constexpr std::experimental::nullopt_t NullOpt = std::experimental::nullopt;
}
#else
#include <SDL2pp/external/libcpp_optional.hh>
namespace SDL2pp {
@ -36,3 +55,5 @@ constexpr sdl2pp_libcpp_optional::nullopt_t NullOpt = sdl2pp_libcpp_optional::nu
}
#endif
#endif