Difference between revisions of "QtConcurrent-BlockingMapped-Other-Object-Member-Function-Bind"
From Qt Wiki
| Line 1: | Line 1: | ||
| − | 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;
}
