Represents a dynamically typed value of an arbitrary type.
To create a any, either initialize it as empty, or with the create() method (or the equivalent constructor, if the type parameter can be deduced and is clear to the reader from the context).
To query the type of the contents in the any, use isEmpty(), type(), and isType().
To access the value, you need to know the type as a compile-time constant (e.g., through branching based on isType()), and then use cast() or tryCast().
Methods in this class do not throw unless otherwise indicated.
This provides essentially the same functionality as boost::any.
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| Any () |
| Creates an empty any value.
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template<typename T , typename = std::enable_if_t<!std::is_same<T, Any>::value>> |
| Any (T &&value) |
| Creates a any that holds the given value. More...
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| Any (const Any &other) |
| Creates a deep copy of a any. More...
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| Any (Any &&other) noexcept |
| Move-constructs a any.
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Any & | operator= (const Any &other) |
| Assigns the any. More...
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Any & | operator= (Any &&other) noexcept |
| Move-assigns the any.
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bool | isEmpty () const |
| Whether any value is stored.
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std::type_index | type () const |
| Returns the dynamic type of the value that is currently stored.
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template<typename T > |
bool | isType () const |
| Returns whether the type stored matches the template parameter.
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template<typename T > |
const T * | tryCast () const |
| Tries to get the value as the given type. More...
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template<typename T > |
const T & | cast () const |
| Gets the value when the type is known. More...
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template<typename T > |
T * | tryCastRef () |
| Tries to get the value as the given type as a non-const pointer. More...
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template<typename T > |
T & | castRef () |
| Gets the value when the type is known as a modifiable reference. More...
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