operator<= (map)
Tests if the map object on the left side of the operator is less than or equal to the map object on the right side.
bool operator<=(
const map <Key, Type, Traits, Allocator>& _Left,
const map <Key, Type, Traits, Allocator>& _Right
);
매개 변수
_Left
An object of type map._Right
An object of type map.
반환 값
true if the map on the left side of the operator is less than or equal to the map on the right side of the operator; otherwise false.
Remark
The comparison between map 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.
예제
// map_op_le.cpp
// compile with: /EHsc
#include <map>
#include <iostream>
int main( )
{
using namespace std;
map <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 << "The map m1 is less than or equal to the map m2." << endl;
else
cout << "The map m1 is greater than the map m2." << endl;
if ( m1 <= m3 )
cout << "The map m1 is less than or equal to the map m3." << endl;
else
cout << "The map m1 is greater than the map m3." << endl;
if ( m1 <= m4 )
cout << "The map m1 is less than or equal to the map m4." << endl;
else
cout << "The map m1 is greater than the map m4." << endl;
}
요구 사항
헤더: <맵>
네임스페이스: std