Retrieving Only Unique Elements from Two Sets

Retrieving Only Unique Elements from Two Sets

This algorithm helps you to retrieve all the elements contained in the first set (set1), but not in the second (set2).

Here’s the template:

templatevoid Diff(const T& set1, const T& set2, T& res) {    T temp;    typename T::const_iterator it = set1.begin();    if (&set1 == &set2)        return;    else {        while (it != set1.end()) {            if (set2.find(*it) == set2.end())  // element not found                temp.insert(*it);            ++i;        }    }    temp.swap(result);}
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