Invoke a categorized accessor on an element of the specified array.
Declared in <bdlat_arrayutil.h>
template<
class TYPE,
class ACCESSOR>
static
int
accessElementByCategory(
TYPE const& array,
ACCESSOR& accessor,
int index);Invoke the specified accessor on the non-modifiable element at the specified index of the specified array and on a prvalue of the category tag type for the dynamic category of the element. See {bdlat_typecategory|Category Tags and Enumerators} for documentation about category tags. Return the value from the invocation of accessor. The accessor must be an accessor functor. See {bdlat_typecategory|ACCESSOR Functors} for the requirements on accessor. The behavior is undefined unless 0 <= index < bdlat_ArrayFunctions::size(array).
value from the invocation of accessor
| Name | Description |
|---|---|
| array | array whose element is accessed |
| accessor | functor applied to the element with a category tag |
| index | zero-based index of the element |