#include <userver/utils/optional_ref.hpp>
Class that behaves as a nullable reference. Main difference from the pointer - value comparison of pointed values.
Initializes from reference to a T or from optional<T>.
Once the reference is constructed it can not be changed to point to different address.
Definition at line 27 of file optional_ref.hpp.
Public Member Functions | |
constexpr | OptionalRef (std::nullopt_t) noexcept |
constexpr | OptionalRef (const OptionalRef &) noexcept=default |
constexpr OptionalRef & | operator= (const OptionalRef &) noexcept=delete |
constexpr | OptionalRef (T &other) noexcept |
constexpr | OptionalRef (const T &&)=delete |
template<typename U > | |
constexpr | OptionalRef (const std::optional< U > &other) noexcept |
template<typename U > | |
constexpr | OptionalRef (std::optional< U > &other) noexcept |
template<typename U > | |
constexpr | OptionalRef (const std::optional< U > &&) noexcept |
template<typename U > | |
constexpr | OptionalRef (const boost::optional< U > &other) noexcept |
template<typename U > | |
constexpr | OptionalRef (boost::optional< U > &other) noexcept |
template<typename U > | |
constexpr | OptionalRef (const boost::optional< U > &&) noexcept |
constexpr bool | has_value () const noexcept |
constexpr | operator bool () const noexcept |
constexpr T * | operator-> () const |
constexpr T & | operator* () const |
constexpr T & | value () const |
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inlineconstexprnoexcept |
Definition at line 32 of file optional_ref.hpp.
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inlineconstexprnoexcept |
Definition at line 36 of file optional_ref.hpp.
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inlineexplicitconstexprnoexcept |
Definition at line 42 of file optional_ref.hpp.
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inlineexplicitconstexprnoexcept |
Definition at line 46 of file optional_ref.hpp.
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inlineexplicitconstexprnoexcept |
Definition at line 50 of file optional_ref.hpp.
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inlineexplicitconstexprnoexcept |
Definition at line 55 of file optional_ref.hpp.
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inlineexplicitconstexprnoexcept |
Definition at line 59 of file optional_ref.hpp.
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inlineexplicitconstexprnoexcept |
Definition at line 63 of file optional_ref.hpp.
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inlineconstexprnoexcept |
Definition at line 67 of file optional_ref.hpp.
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inlineexplicitconstexprnoexcept |
Definition at line 68 of file optional_ref.hpp.
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inlineconstexpr |
Definition at line 75 of file optional_ref.hpp.
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inlineconstexpr |
Definition at line 70 of file optional_ref.hpp.
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inlineconstexpr |
Definition at line 80 of file optional_ref.hpp.