This nested class defines a mechanism for comparing two objects of value_type by adapting an object of (template parameter) type COMPARATOR, which compares two objects of (template parameter) type KEY . Note that this class exactly matches its definition in the C++11 standard [23.4.4.1]; otherwise, we would have implemented it as a separate component-local class.
Declared in <bslstl_multimap.h>
class value_compare;| Name | Description |
|---|---|
first_argument_type | This typedef is an alias for the type of the first parameter of the overload of operator() (the comparison function) provided by a multimap::value_compare object. |
result_type | This typedef is an alias for the result type of a call to the overload of operator() (the comparison function) provided by a multimap::value_compare object. |
second_argument_type | This typedef is an alias for the type of the second parameter of the overload of operator() (the comparison function) provided by a multimap::value_compare object. |
| Name | Description |
|---|---|
operator() | Return true if the specified x object is ordered before the specified y object, as determined by the comparator supplied at construction, and false otherwise. |
| Name | Description |
|---|---|
value_compare [constructor] | Create a value_compare object that uses the specified comparator. |
| Name | Description |
|---|---|
comp | Key comparator stored in each node. |
| Name | Description |
|---|---|
bsl::multimap | This class template implements a value-semantic container type holding an ordered sequence of key-value pairs having possibly duplicate keys that provide a mapping from keys (of the template parameter type, KEY) to their associated values (of another template parameter type, VALUE). |