How to find an object with specific field values in a std::set?

Question

I call a method which returns std::set const& where T is a class type. What I\'m trying to achieve is to check whether the set contain

Answer 1

You may try overriding operator<(const T& a, const T& b) to impose an order on those attributes, so std::set:find(const T& x) will return the first no less than x.

Ej:

bool operator<(const Car& a, const Car& b)
{
    return a.color cars;
Car x;
cars.find(x);