| comparison operators | function |
template <class Key, class T, class Compare, class Allocator>
bool operator== ( const map<Key,T,Compare,Allocator>& x,
const map<Key,T,Compare,Allocator>& y );
template <class Key, class T, class Compare, class Allocator>
bool operator< ( const map<Key,T,Compare,Allocator>& x,
const map<Key,T,Compare,Allocator>& y );
template <class Key, class T, class Compare, class Allocator>
bool operator!= ( const map<Key,T,Compare,Allocator>& x,
const map<Key,T,Compare,Allocator>& y );
template <class Key, class T, class Compare, class Allocator>
bool operator> ( const map<Key,T,Compare,Allocator>& x,
const map<Key,T,Compare,Allocator>& y );
template <class Key, class T, class Compare, class Allocator>
bool operator>= ( const map<Key,T,Compare,Allocator>& x,
const map<Key,T,Compare,Allocator>& y );
template <class Key, class T, class Compare, class Allocator>
bool operator<= ( const map<Key,T,Compare,Allocator>& x,
const map<Key,T,Compare,Allocator>& y ); |
<map> |
Global comparison operator functions
These overloaded global operator functions perform the appropriate comparison operation between map containers x and y.
Operations == and != are performed by comparing the elements using algorithm equal.
Operations <, >, <= and >= are performed by using algorithm lexicographical_compare, which requires that the type of the elements (T) has the < operation (less-than) defined between two objects of that type.
These operators are overloaded in header <map>.
Parameters
- x, y
- map containers, having both the same template parameters (Key, T, Compare and Allocator).
Return Value
true if the condition holds, and false otherwise.