std::experimental:: nullopt
From cppreference.net
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nullopt
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Definiert in Header
<experimental/optional>
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constexpr
nullopt_t nullopt
{
/*unspecified*/
}
;
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(Library Fundamentals TS) | |
std::experimental::nullopt
ist eine Konstante vom Typ
std::experimental::nullopt_t
, die verwendet wird, um einen
optional
-Typ mit nicht initialisiertem Zustand anzuzeigen.
Siehe auch
|
(library fundamentals TS)
|
Indikator für optionalen Typ mit nicht initialisiertem Zustand
(Klasse) |