reference_guides/latest/nullopt_8hpp_source.html

#pragma once

#include "null_opt.hpp"

#include "core_export.hpp"


namespace xtd {

  constexpr null_opt nullopt = std::nullopt;

}

core_export.hpp
Contains core_export_ keyword.

xtd::null_opt
std::nullopt_t null_opt
Represents the null_opt alias on std::nullopt_t.
Definition null_opt.hpp:19

xtd::nullopt
constexpr null_opt nullopt
Represents a nullopt value. Used to indicate that an std::optional does not contain a value.
Definition nullopt.hpp:26

xtd
The xtd namespace contains all fundamental classes to access Hardware, Os, System,...
Definition abstract_object.hpp:8

null_opt.hpp
Contains xtd::null_opt alias.