std::experimental::any_cast
From cppreference.com
< cpp | experimental | any
|
template
<
class ValueType>
ValueType any_cast( const any& operand) ; |
(1) | (library fundamentals TS) |
|
template
<
class ValueType>
ValueType any_cast(any& operand) ; |
(2) | (library fundamentals TS) |
|
template
<
class ValueType>
ValueType any_cast(any&& operand) ; |
(3) | (library fundamentals TS) |
|
template
<
class ValueType>
const ValueType* any_cast( const any* operand) noexcept ; |
(4) | (library fundamentals TS) |
|
template
<
class ValueType>
ValueType* any_cast(any* operand) noexcept ; |
(5) | (library fundamentals TS) |
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
Exceptions
1-3) Throws
bad_any_cast if the typeid of the requested ValueType does not match that of the contents of operand