std::optional<T>::operator bool, std::optional<T>::has_value

< cpp‎ | utility‎ | optional
 
 
 
 
constexpr explicit operator bool() const noexcept;
(since C++17)
constexpr bool has_value() const noexcept;
(since C++17)

Checks whether *this contains a value.

Parameters

(none)

Return value

true if *this contains a value, false if *this does not contain a value.