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 | 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":http://developer.qt.nokia.com/wiki/QtConcurrent-BlockingMapped-Other-Object-Member-Function-Bind | ||
<code><br />#include <QtConcurrentMap&gt;<br />#include <QVector&gt; | |||
#include <boost/bind.hpp&gt; | |||
#include <iostream&gt; | |||
class Object{}; | |||
class MyClass<br />{<br />public:<br /> float operator()(const Object&amp; object) { return 1.0f;}<br /> typedef float result_type;<br />}; | |||
int main()<br />{<br /> QVector&amp;lt;Object&amp;gt; v;<br /> Object a;<br /> v.push_back(a); | |||
MyClass myClass; | |||
QVector&lt;float&gt; result = QtConcurrent::blockingMapped&lt;QVector&lt;float&gt; >(v.begin(), v.end(), myClass); | |||
std::cout << result[0] << std::endl;<br /> return 0;<br />} | |||
Revision as of 11:14, 24 February 2015
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":http://developer.qt.nokia.com/wiki/QtConcurrent-BlockingMapped-Other-Object-Member-Function-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&lt;Object&gt; 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;
}