operator<= (multimap)
Tests if the multimap object on the left side of the operator is less than or equal to the multimap object on the right side.
bool operator<=(
const multimap <Key, Type, Traits, Allocator>& _Left,
const multimap <Key, Type, Traits, Allocator>& _Right
);
Parameters
_Left
An object of type multimap._Right
An object of type multimap.
Return Value
true if the multimap on the left side of the operator is less than or equal to the multimap on the right side of the operator; otherwise false.
Remark
The comparison between multimap objects is based on a pairwise comparison of their elements. The less than or equal to relationship between two objects is based on a comparison of the first pair of unequal elements.
Example
// multimap_op_le.cpp
// compile with: /EHsc
#include <map>
#include <iostream>
int main( )
{
using namespace std;
multimap <int, int> m1, m2, m3, m4;
int i;
typedef pair <int, int> Int_Pair;
for ( i = 1 ; i < 3 ; i++ )
{
m1.insert ( Int_Pair ( i, i ) );
m2.insert ( Int_Pair ( i, i * i ) );
m3.insert ( Int_Pair ( i, i - 1 ) );
m4.insert ( Int_Pair ( i, i ) );
}
if ( m1 <= m2 )
cout << "m1 is less than or equal to m2" << endl;
else
cout << "m1 is greater than m2" << endl;
if ( m1 <= m3 )
cout << "m1 is less than or equal to m3" << endl;
else
cout << "m1 is greater than m3" << endl;
if ( m1 <= m4 )
cout << "m1 is less than or equal to m4" << endl;
else
cout << "m1 is greater than m4" << endl;
}
m1 is less than or equal to m2 m1 is greater than m3 m1 is less than or equal to m4
Requirements
Header: <map>
Namespace: std