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std::experi...al::any_cast(3) C++ Standard Libarystd::experi...al::any_cast(3) NAME std::experimental::any_cast - std::experimental::any_cast Synopsis template<class ValueType> (1) (library fundamentals TS) ValueType any_cast(const any& operand); template<class ValueType> (2) (library fundamentals TS) ValueType any_cast(any& operand); template<class ValueType> (3) (library fundamentals TS) ValueType any_cast(any&& operand); template<class ValueType> const ValueType* any_cast(const any* operand) (4) (library fundamentals TS) noexcept; template<class ValueType> (5) (library fundamentals TS) ValueType* any_cast(any* operand) noexcept; Performs type-safe access to the contained object. For (1-3), the program is ill-formed if ValueType is not a reference and std::is_copy_constructible<ValueType>::value is false. Parameters operand - target any object Return value 1) Returns *any_cast<std::add_const_t<std::remove_reference_t<Value- Type>>>(&operand). 2-3) Returns *any_cast<std::remove_reference_t<Value- Type>>(&operand). 4-5) If operand is not a null pointer, and the typeid of the re- quested ValueType matches that of the contents of operand, a pointer to the value con- tained by operand, otherwise a null pointer. Exceptions 1-3) Throws bad_any_cast if the typeid of the requested ValueType does not match that of the contents of operand. http://cppreference.com 2022.07.31 std::experi...al::any_cast(3)
NAME | Synopsis | Parameters | Return value | Exceptions
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