What is Functor?
1.
A functor, or function object, is a class in
class over5 { // this class is the functor
bool operator() (int x) {
return x > 5;
}
};
std::list<int> L;
... // put a bunch of ints onto the list
over5 o5;
std::find_if(L.begin(), L.end(), o5);
// o5 will have its overloaded () operator called to check if the element in L is over 5.
Random Words:
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