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This Demonstrates how to pass each object in the container to a member function of different class instance. You can alternatively do this using boost::bind

#include <QtConcurrentMap>
#include <QVector>
#include <boost/bind.hpp>
#include <iostream>

class Object{};

class MyClass
 float operator()(const Object& object) { return 1.0f; }
 typedef float result_type;

int main()
 QVector<Object> v;
 Object a;
 MyClass myClass;
 QVector<float> result = QtConcurrent::blockingMapped<QVector<float> >(v.begin(), v.end(), myClass);
 std::cout << result[0] << std::endl;
 return 0;