Multisets are a type of associative containers similar to set, with an exception that multiple elements can have same values.
This operator is used to assign new contents to the container by replacing the existing contents.
It also modifies the size according to the new contents.
Syntax :
multisetname1 = (multisetname2) Parameters : Another container of the same type. Result : Assign the contents of the container passed as parameter to the container written on left side of the operator.
This operator is used to assign new contents to the container by replacing the existing contents.
It also modifies the size according to the new contents.
Syntax :
setname1 = (setname2) Parameters : Another container of the same type. Result : Assign the contents of the container passed as parameter to the container written on left side of the operator.
Examples:
Input : mymultiset1 = 1, 2, 3 mymultiset2 = 3, 2, 1, 4 mymultiset1 = mymultiset2; Output : mymultiset1 = 3, 2, 1, 4 Input : mymultiset1 = 2, 6, 1, 5 mymultiset2 = 3, 2 mymultiset1 = mymultiset2; Output : mymultiset1 = 3, 2
Input : myset1 = 1, 2, 3 myset2 = 3, 2, 1, 4 myset1 = myset2; Output : myset1 = 3, 2, 1, 4 Input : myset1 = 2, 6, 1, 5 myset2 = 3, 2 myset1 = myset2; Output : myset1 = 3, 2
Errors and Exceptions
1. If the containers are of different types, an error is thrown.
2. It has a basic no exception throw guarantee otherwise.
// INTEGER MULTISET EXAMPLE // CPP program to illustrate // Implementation of = operator #include <iostream> #include <set> using namespace std;
int main()
{ multiset< int > mymultiset1{ 1, 7, 4, 9, 0};
multiset< int > mymultiset2{ 3, 4 };
mymultiset1 = mymultiset2;
cout << "mymultiset1 = ";
for ( auto it = mymultiset1.begin();
it != mymultiset1.end(); ++it)
cout << ' ' << *it;
return 0;
} |
Output:
mymultilist1 = 3 4
// CHARACTER MULTISET EXAMPLE // CPP program to illustrate // Implementation of = operator #include <iostream> #include <set> using namespace std;
int main()
{ multiset< char > mymultiset1{ 'a' , 'b' , 'c' };
multiset< char > mymultiset2{ 'x' , 'y' };
mymultiset1 = mymultiset2;
cout << "mymultiset1 = ";
for ( auto it = mymultiset1.begin();
it != mymultiset1.end(); ++it)
cout << ' ' << *it;
return 0;
} |
Output:
mymultilist1 = x y
// STRING MULTISET EXAMPLE // CPP program to illustrate // Implementation of = operator #include <iostream> #include <set> #include<string> using namespace std;
int main()
{ multiset<string> mymultiset1{ "This","is","a","computer science portal"};
multiset<string> mymultiset2{ "GeeksForGeeks" };
mymultiset1 = mymultiset2;
cout << "mymultiset1 = ";
for ( auto it = mymultiset1.begin();
it != mymultiset1.end(); ++it)
cout << ' ' << *it;
return 0;
} |
Output:
mymultilist1 = GeeksForGeeks
Time Complexity: O(n)
// CPP program to illustrate // Implementation of = operator #include <iostream> #include <set> #include<string> using namespace std;
int main()
{ set<string> myset1{ "This","is","a","computer science portal"};
set<string> myset2{ "GeeksForGeeks" };
myset1 = myset2;
cout << "myset1 = ";
for ( auto it = myset1.begin();
it != myset1.end(); ++it)
cout << ' ' << *it;
return 0;
} |
Output:
mylist1 = GeeksForGeeks
Time Complexity: O(n)