This struct template provides a mechanism for determining whether a given (template parameter) ALLOCATOR_TYPE defines a const member function named select_on_container_copy_construction that takes no arguments and returns an ALLOCATOR_TYPE object by value. The static boolean value (nested type alias) is true (bsl::true_type) if ALLOCATOR_TYPE defines such a method, and false (bsl::false_type) otherwise.
Declared in <bslma_allocatortraits.h>
template<class ALLOCATOR_TYPE>
struct AllocatorTraits_HasSelectOnCopyMethod;| Name | Description |
|---|---|
type | integral_constant for whether ALLOCATOR_TYPE defines select_on_container_copy_construction. |
| Name | Description |
|---|---|
value | true if ALLOCATOR_TYPE defines a select_on_container_copy_construction method. |