QtConcurrent-BlockingMapped-Other-Object-Member-Function-Bind: Difference between revisions
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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 | 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()":http://developer.qt.nokia.com/wiki/QtConcurrent-BlockingMapped-Other-Object-Member-Function-Operator | ||
<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 Test(const Object&amp; object) const { return 1.0f;} // Note, this function MUST be const!<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(), boost::bind(&MyClass::Test, &myClass, _1)); | |||
std::cout << result[0] << std::endl;<br /> return 0;<br />} |
Revision as of 10:57, 24 February 2015
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()":http://developer.qt.nokia.com/wiki/QtConcurrent-BlockingMapped-Other-Object-Member-Function-Operator
#include <QtConcurrentMap>
#include <QVector>
- include <boost/bind.hpp>
- 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&lt;Object&gt; 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;
}