multimap::empty
Teste si un mappage multiples est vide.
bool empty( ) const;
Valeur de retour
true si le mappage multiples est vide ; false si le mappage multiples est vide.
Exemple
// multimap_empty.cpp
// compile with: /EHsc
#include <map>
#include <iostream>
int main( )
{
using namespace std;
multimap <int, int> m1, m2;
typedef pair <int, int> Int_Pair;
m1.insert ( Int_Pair ( 1, 1 ) );
if ( m1.empty( ) )
cout << "The multimap m1 is empty." << endl;
else
cout << "The multimap m1 is not empty." << endl;
if ( m2.empty( ) )
cout << "The multimap m2 is empty." << endl;
else
cout << "The multimap m2 is not empty." << endl;
}
Configuration requise
En-tête : <mappage>
Espace de noms : std