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

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Demonstrates how to pass each object in the container to a member function of different class instance. You can alternatively do this using [http://developer.qt.nokia.com/wiki/QtConcurrent-BlockingMapped-Other-Object-Member-Function-Bind boost::bind] ''[developer.qt.nokia.com]''
[[Category:HowTo]]
This Demonstrates how to pass each object in the container to a member function of different class instance. You can alternatively do this using [[QtConcurrent-BlockingMapped-Other-Object-Member-Function-Bind | boost::bind]]
 
<code>
#include <QtConcurrentMap>
#include <QVector>
#include <boost/bind.hpp>
#include <iostream>
 
class Object{};
 
class MyClass
{
public:
float operator()(const Object& object) { return 1.0f; }
typedef float result_type;
};
 
int main()
{
QVector<Object> v;
Object a;
v.push_back(a);
MyClass myClass;
QVector<float> result = QtConcurrent::blockingMapped<QVector<float> >(v.begin(), v.end(), myClass);
std::cout << result[0] << std::endl;
return 0;
}
</code>

Latest revision as of 21:50, 7 April 2016

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

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