QtConcurrent-BlockingMapped-Other-Object-Member-Function-Bind: Difference between revisions

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This demonstrates how to pass each object in the container to a member function of different class instance using boost::bind. You can alternatively do this by overloading [[QtConcurrent-BlockingMapped-Other-Object-Member-Function-Operator | operator()]]
 
Demonstrates how to pass each object in the container to a member function of different class instance using boost::bind. You can alternatively do this by overloading [http://developer.qt.nokia.com/wiki/QtConcurrent-BlockingMapped-Other-Object-Member-Function-Operator operator()]


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


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{
{
public:
public:
  float Test(const Object& object) const { return 1.0f;} // Note, this function MUST be const!
  float Test(const Object& object) const { return 1.0f; } // Note, this function MUST be const!
};
};


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  Object a;
  Object a;
  v.push_back(a);
  v.push_back(a);
 
MyClass myClass;
MyClass myClass;
QVector<float> result = QtConcurrent::blockingMapped<QVector<float> >(v.begin(), v.end(), boost::bind(&MyClass::Test, &myClass, _1));
 
std::cout << result[0] << std::endl;
QVector<float> result = QtConcurrent::blockingMapped<QVector<float> >(v.begin(), v.end(), boost::bind(&MyClass::Test, &myClass, _1));
 
std::cout << result[0] << std::endl;
  return 0;
  return 0;
}
}

Revision as of 11:46, 24 March 2016

This demonstrates how to pass each object in the container to a member function of different class instance using boost::bind. You can alternatively do this by overloading operator()

  1. include <QtConcurrentMap>
  2. include <QVector>
  3. include <boost/bind.hpp>
  4. include <iostream>

class Object{};

class MyClass { public: 

float Test(const Object& object) const { return 1.0f; } // Note, this function MUST be const!

};

int main() { 

QVector<Object> v;
Object a;
v.push_back(a);
MyClass myClass;
QVector<float> result = QtConcurrent::blockingMapped<QVector<float> >(v.begin(), v.end(), boost::bind(&MyClass::Test, &myClass, _1));
std::cout << result[0] << std::endl;
return 0;

}

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