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> | <code> | ||
#include <QtConcurrentMap> | |||
#include <QVector> | |||
#include | #include <boost/bind.hpp> | ||
#include | #include <iostream> | ||
class Object{}; | class Object{}; | ||
class MyClass | class MyClass | ||
{ | |||
public: | |||
float Test(const Object&amp; object) const { return 1.0f;} // Note, this function MUST be const! | |||
}; | |||
int main() | int main() | ||
{ | |||
QVector&amp;lt;Object&amp;gt; v; | |||
Object a; | |||
v.push_back(a); | |||
MyClass myClass; | MyClass myClass; | ||
QVector | QVector<float> result = QtConcurrent::blockingMapped<QVector<float> >(v.begin(), v.end(), boost::bind(&MyClass::Test, &myClass, _1)); | ||
std::cout | std::cout << result[0] << std::endl; | ||
return 0; | |||
} | |||
Revision as of 11:16, 25 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;
}