357   constexpr bool initialized() const noexcept { return OptionalBase<T>::init_; }  in initialized()  function in std::experimental::optional
376     if (initialized()) dataptr()->T::~T();  in clear()
406     if (rhs.initialized()) {  in optional()
415     if (rhs.initialized()) {  in optional()
445     if      (initialized() == true  && rhs.initialized() == false) clear();  in operator =()
446     else if (initialized() == false && rhs.initialized() == true)  initialize(*rhs);  in operator =()
447     else if (initialized() == true  && rhs.initialized() == true)  contained_val() = *rhs;  in operator =()
454     if      (initialized() == true  && rhs.initialized() == false) clear();  in operator =()
455     else if (initialized() == false && rhs.initialized() == true)  initialize(std::move(*rhs));  in operator =()
456 …  else if (initialized() == true  && rhs.initialized() == true)  contained_val() = std::move(*rhs);  in operator =()
468     if (initialized()) { contained_val() = std::forward<U>(v); }  in operator =()
491 …if      (initialized() == true  && rhs.initialized() == false) { rhs.initialize(std::move(**this))…  in swap()
492 …else if (initialized() == false && rhs.initialized() == true)  { initialize(std::move(*rhs)); rhs.…  in swap()
493 …else if (initialized() == true  && rhs.initialized() == true)  { using std::swap; swap(**this, *rh…  in swap()
498   explicit constexpr operator bool() const noexcept { return initialized(); }  in operator bool()
501     return TR2_OPTIONAL_ASSERTED_EXPRESSION(initialized(), dataptr());  in operator ->()
507     assert (initialized());  in operator ->()
512     return TR2_OPTIONAL_ASSERTED_EXPRESSION(initialized(), contained_val());  in operator *()
516     assert (initialized());  in operator *()
521     assert (initialized());  in operator *()
526 …return initialized() ? contained_val() : (throw bad_optional_access("bad optional access"), contai…  in value()
530 …return initialized() ? contained_val() : (throw bad_optional_access("bad optional access"), contai…  in value()
534     if (!initialized()) throw bad_optional_access("bad optional access");  in value()
541     assert (initialized());  in operator ->()
546     return TR2_OPTIONAL_ASSERTED_EXPRESSION(initialized(), contained_val());  in operator *()
550     assert (initialized());  in operator *()
555 …return initialized() ? contained_val() : (throw bad_optional_access("bad optional access"), contai…  in value()
559 …return initialized() ? contained_val() : (throw bad_optional_access("bad optional access"), contai…  in value()