<hash_set> operators
The latest version of this topic can be found at <hash_set> operators.
| operator!= | operator!= (hash_multiset) | operator== |
| operator== (hash_multiset) |
operator!=
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This API is obsolete.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.
operator==
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This API is obsolete.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.
operator!= (hash_multiset)
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.
operator== (hash_multiset)
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.