This struct template implements the add_pointer meta-function defined in the C++11 standard [meta.trans.ptr], providing an alias, type, that returns the result. If the (template parameter) t_TYPE is not a reference type, then type is an alias to a pointer type that points to t_TYPE; otherwise, type is an alias to a pointer type that points to the type referred to by the reference t_TYPE, unless it is not legal to form such a pointer type, in which case type is an alias for t_TYPE.
Declared in <bslmf_addpointer.h>
template<class t_TYPE>
struct add_pointer;| Name | Description |
|---|---|
type | This typedef is an alias to a pointer type that points to the (template parameter) t_TYPE if it is not a reference type; otherwise, this typedef is an alias to a pointer type that points to the type referred to by the reference t_TYPE. |
| Name | Description |
|---|---|
add_pointer<t_TYPE&> | If we can form a reference to t_TYPE, then we can also form a pointer to it. In particular, we know that it is not void (which should still work) or an "abominable" function type with a trailing cv-qualifier. Note that this partial specialization is necessary to avoid falling into degenerate (non-compiling) cases in the implementation meta-program. |
add_pointer<t_TYPE&&> | If we can form a reference to t_TYPE, then we can also form a pointer to it. In particular, we know that it is not void (which should still work) or an "abominable" function type with a trailing cv-qualifier. Note that this partial specialization is necessary to avoid falling into degenerate (non-compiling) cases in the implementation meta-program. |