beman::optional reference.adoc#beman-optional beman::optional::bad_optional_access beman::optional::in_place_t beman::optional::nullopt_t beman::optional::optional beman::optional::optional beman::optional::make_optional beman::optional::operator== beman::optional::operator!= beman::optional::operator< beman::optional::operator<= beman::optional::operator> beman::optional::operator>= beman::optional::operator<=> beman::optional::in_place beman::optional::nullopt beman::optional::is_derived_from_optional void swap reference.adoc beman-optional-swap (optional<T>& x, optional<T>& y) beman::optional::bad_optional_access reference.adoc#beman-optional-bad_optional_access void bad_optional_access reference.adoc beman-optional-bad_optional_access-2constructor () const char* what reference.adoc beman-optional-bad_optional_access-what () beman::optional::in_place_t reference.adoc#beman-optional-in_place_t void in_place_t reference.adoc beman-optional-in_place_t-2constructor () beman::optional::nullopt_t reference.adoc#beman-optional-nullopt_t void nullopt_t reference.adoc beman-optional-nullopt_t-2constructor (Tag value) beman::optional::optional reference.adoc#beman-optional-optional-03 bool has_value reference.adoc beman-optional-optional-03-has_value () void reset reference.adoc beman-optional-optional-03-reset () void swap reference.adoc beman-optional-optional-03-swap (optional& rhs) bool operator bool reference.adoc beman-optional-optional-03-2conversion () beman::optional::optional reference.adoc#beman-optional-optional-06 void ~optional reference.adoc beman-optional-optional-06-2destructor () auto and_then reference.adoc beman-optional-optional-06-and_then (F&& f) optional<T&>::iterator begin reference.adoc beman-optional-optional-06-begin () T& emplace reference.adoc beman-optional-optional-06-emplace (U&& u) optional<T&>::iterator end reference.adoc beman-optional-optional-06-end () bool has_value reference.adoc beman-optional-optional-06-has_value () T& operator* reference.adoc beman-optional-optional-06-operator_star () T* operator-> reference.adoc beman-optional-optional-06-operator_ptr () optional<T&> or_else reference.adoc beman-optional-optional-06-or_else (F&& f) void reset reference.adoc beman-optional-optional-06-reset () void swap reference.adoc beman-optional-optional-06-swap (optional& rhs) optional<std::invoke_result_t<F, T&>> transform reference.adoc beman-optional-optional-06-transform (F&& f) T& value reference.adoc beman-optional-optional-06-value () std::decay_t<T> value_or reference.adoc beman-optional-optional-06-value_or (U&& u) bool operator bool reference.adoc beman-optional-optional-06-2conversion () beman::optional::make_optional reference.adoc#beman-optional-make_optional-02 beman::optional::operator== reference.adoc#beman-optional-operator_eq-04 beman::optional::operator!= reference.adoc#beman-optional-operator_not_eq-0c beman::optional::operator< reference.adoc#beman-optional-operator_lt-07 beman::optional::operator<= reference.adoc#beman-optional-operator_le-05 beman::optional::operator> reference.adoc#beman-optional-operator_gt-05 beman::optional::operator>= reference.adoc#beman-optional-operator_ge-09 beman::optional::operator<=> reference.adoc#beman-optional-operator_3way-04 beman::optional::in_place reference.adoc#beman-optional-in_place beman::optional::nullopt reference.adoc#beman-optional-nullopt beman::optional::is_derived_from_optional reference.adoc#beman-optional-is_derived_from_optional