<hash_set> operators

Visual Studio 2015
 

For the latest documentation on Visual Studio 2017, see Visual Studio 2017 Documentation.

operator!=operator!= (hash_multiset)operator==
operator== (hash_multiset)
System_CAPS_ICON_note.jpg Note

This API is obsolete. The alternative is unordered_set Class.

Tests if the hash_set object on the left side of the operator is not equal to the hash_set object on the right side.

bool operator!=(const hash_set <Key, Traits, Allocator>& left, const hash_set <Key, Traits, Allocator>& right);

Parameters

left
An object of type hash_set.

right
An object of type hash_set.

Return Value

true if the hash_sets are not equal; false if hash_sets are equal.

Remarks

The comparison between hash_set objects is based on a pairwise comparison between their elements. Two hash_sets are equal if they have the same number of elements and their respective elements have the same values. Otherwise, they are unequal.

In Visual C++ .NET 2003, members of the <hash_map> and <hash_set> header files are no longer in the std namespace, but rather have been moved into the stdext namespace. See The stdext Namespace for more information.

Example

// hash_set_op_ne.cpp  
// compile with: /EHsc  
#include <hash_set>  
#include <iostream>  
  
int main( )   
{  
   using namespace std;  
   using namespace stdext;  
   hash_set <int> hs1, hs2, hs3;  
   int i;  
  
   for ( i = 0 ; i < 3 ; i++ )  
   {  
      hs1.insert ( i );  
      hs2.insert ( i * i );  
      hs3.insert ( i );  
   }  
  
   if ( hs1 != hs2 )  
      cout << "The hash_sets hs1 and hs2 are not equal." << endl;  
   else  
      cout << "The hash_sets hs1 and hs2 are equal." << endl;  
  
   if ( hs1 != hs3 )  
      cout << "The hash_sets hs1 and hs3 are not equal." << endl;  
   else  
      cout << "The hash_sets hs1 and hs3 are equal." << endl;  
}  

The hash_sets hs1 and hs2 are not equal.  
The hash_sets hs1 and hs3 are equal.  

System_CAPS_ICON_note.jpg Note

This API is obsolete. The alternative is unordered_set Class.

Tests if the hash_set object on the left side of the operator is equal to the hash_set object on the right side.

bool operator!==(const hash_set <Key, Traits, Allocator>& left, const hash_set <Key, Traits, Allocator>& right);

Parameters

left
An object of type hash_set.

right
An object of type hash_set.

Return Value

true if the hash_set on the left side of the operator is equal to the hash_set on the right side of the operator; otherwise false.

Remarks

The comparison between hash_set objects is based on a pairwise comparison of their elements. Two hash_sets are equal if they have the same number of elements and their respective elements have the same values. Otherwise, they are unequal.

In Visual C++ .NET 2003, members of the <hash_map> and <hash_set> header files are no longer in the std namespace, but rather have been moved into the stdext namespace. See The stdext Namespace for more information.

Example

// hash_set_op_eq.cpp  
// compile with: /EHsc  
#include <hash_set>  
#include <iostream>  
  
int main( )  
{  
   using namespace std;  
   using namespace stdext;  
   hash_set <int> s1, s2, s3;  
   int i;  
  
   for ( i = 0 ; i < 3 ; i++ )  
   {  
      s1.insert ( i );  
      s2.insert ( i * i );  
      s3.insert ( i );  
   }  
  
   if ( s1 == s2 )  
      cout << "The hash_sets s1 and s2 are equal." << endl;  
   else  
      cout << "The hash_sets s1 and s2 are not equal." << endl;  
  
   if ( s1 == s3 )  
      cout << "The hash_sets s1 and s3 are equal." << endl;  
   else  
      cout << "The hash_sets s1 and s3 are not equal." << endl;  
}  

The hash_sets s1 and s2 are not equal.  
The hash_sets s1 and s3 are equal.  

System_CAPS_ICON_note.jpg Note

This API is obsolete. The alternative is unordered_set Class.

Tests if the hash_multiset object on the left side of the operator is not equal to the hash_multiset object on the right side.

bool operator!=(const hash_multiset <Key, Traits, Allocator>& left, const hash_multiset <Key, Traits, Allocator>& right);

Parameters

left
An object of type hash_multiset.

right
An object of type hash_multiset.

Return Value

true if the hash_multisets are not equal; false if hash_multisets are equal.

Remarks

The comparison between hash_multiset objects is based on a pairwise comparison between their elements. Two hash_multisets are equal if they have the same number of elements and their respective elements have the same values. Otherwise, they are unequal.

In Visual C++ .NET 2003, members of the <hash_map> and <hash_set> header files are no longer in the std namespace, but rather have been moved into the stdext namespace. See The stdext Namespace for more information.

Example

// hashset_op_ne.cpp  
// compile with: /EHsc  
#include <hash_set>  
#include <iostream>  
  
int main( )   
{  
   using namespace std;  
   using namespace stdext;  
   hash_multiset <int> hs1, hs2, hs3;  
   int i;  
  
   for ( i = 0 ; i < 3 ; i++ )  
   {  
      hs1.insert ( i );  
      hs2.insert ( i * i );  
      hs3.insert ( i );  
   }  
  
   if ( hs1 != hs2 )  
      cout << "The hash_multisets hs1 and hs2 are not equal." << endl;  
   else  
      cout << "The hash_multisets hs1 and hs2 are equal." << endl;  
  
   if ( hs1 != hs3 )  
      cout << "The hash_multisets hs1 and hs3 are not equal." << endl;  
   else  
      cout << "The hash_multisets hs1 and hs3 are equal." << endl;  
}  

The hash_multisets hs1 and hs2 are not equal.  
The hash_multisets hs1 and hs3 are equal.  

System_CAPS_ICON_note.jpg Note

This API is obsolete. The alternative is unordered_set Class.

Tests if the hash_multiset object on the left side of the operator is equal to the hash_multiset object on the right side.

bool operator!==(const hash_multiset <Key, Traits, Allocator>& left, const hash_multiset <Key, Traits, Allocator>& right);

Parameters

left
An object of type hash_multiset.

right
An object of type hash_multiset.

Return Value

true if the hash_multiset on the left side of the operator is equal to the hash_multiset on the right side of the operator; otherwise false.

Remarks

The comparison between hash_multiset objects is based on a pairwise comparison of their elements. Two hash_multisets are equal if they have the same number of elements and their respective elements have the same values. Otherwise, they are unequal.

In Visual C++ .NET 2003, members of the <hash_map> and <hash_set> header files are no longer in the std namespace, but rather have been moved into the stdext namespace. See The stdext Namespace for more information.

Example

// hash_multiset_op_eq.cpp  
// compile with: /EHsc  
#include <hash_set>  
#include <iostream>  
  
int main( )  
{  
   using namespace std;  
   using namespace stdext;  
   hash_multiset <int> s1, s2, s3;  
   int i;  
  
   for ( i = 0 ; i < 3 ; i++ )  
   {  
      s1.insert ( i );  
      s2.insert ( i * i );  
      s3.insert ( i );  
   }  
  
   if ( s1 == s2 )  
      cout << "The hash_multisets s1 and s2 are equal." << endl;  
   else  
      cout << "The hash_multisets s1 and s2 are not equal." << endl;  
  
   if ( s1 == s3 )  
      cout << "The hash_multisets s1 and s2 are equal." << endl;  
   else  
      cout << "The hash_multisets s1 and s2 are not equal." << endl;  
}  

The hash_multisets s1 and s2 are not equal.  
The hash_multisets s1 and s2 are equal.  

<hash_set>

Show: