Export (0) Print
Expand All
This topic has not yet been rated - Rate this topic

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 
);
_Left

An object of type multimap.

_Right

An object of type multimap.

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.

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.

// 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

Header: <map>

Namespace: std

Show:
© 2014 Microsoft. All rights reserved.