| std::experimental::nullopt_t(3cxx) | std::experimental::nullopt_t(3cxx) |
std::experimental::nullopt_t - Tag type to disengage optional objects.
enum class _Construct { _Token }
constexpr nullopt_t (_Construct)
Tag type to disengage optional objects.
Definition at line 92 of file optional.
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| Sun Feb 7 2021 | libstdc++ |