Emplaces a new value in the optional, destroying the current one if
Synopsis
Declared in <beman/optional/optional.hpp>
template<class U>
requires (std::is_constructible_v<T&, U> && !detail::reference_constructs_from_temporary_v<T&, U>)
constexpr
T&
emplace(U&& u) noexcept(std::is_nothrow_constructible_v<T &, U>);Description
Constructs the stored value from u if it is convertible to T&.
Return Value
T&
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