std::experimental::any_cast (3) Linux Manual Page

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>
(4)(library fundamentals TS)

    const ValueType *any_cast(const any *operand) 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<ValueType>>>(&operand).
2-3) Returns *any_cast<std::remove_reference_t<ValueType>>(&operand).
4-5) If operand is not a null pointer, and the typeid of the requested ValueType matches that of the contents of operand, a pointer to the value contained 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.