Difference between revisions of "QtConcurrent-BlockingMapped-Other-Object-Member-Function-Operator"
From Qt Wiki
| Line 1: | Line 1: | ||
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 | 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> | + | <code> |
| + | #include <QtConcurrentMap> | ||
| + | #include <QVector> | ||
#include <boost/bind.hpp> | #include <boost/bind.hpp> | ||
| Line 9: | Line 11: | ||
class Object{}; | class Object{}; | ||
| − | class MyClass | + | class MyClass |
| + | { | ||
| + | public: | ||
| + | float operator()(const Object&amp; object) { return 1.0f;} | ||
| + | typedef float result_type; | ||
| + | }; | ||
| − | int main() | + | int main() |
| + | { | ||
| + | QVector&amp;lt;Object&amp;gt; v; | ||
| + | Object a; | ||
| + | v.push_back(a); | ||
MyClass myClass; | MyClass myClass; | ||
| Line 17: | Line 28: | ||
QVector<float> result = QtConcurrent::blockingMapped<QVector<float> >(v.begin(), v.end(), myClass); | QVector<float> result = QtConcurrent::blockingMapped<QVector<float> >(v.begin(), v.end(), myClass); | ||
| − | std::cout << result[0] << std::endl; | + | std::cout << result[0] << std::endl; |
| + | return 0; | ||
| + | } | ||
Revision as of 11:32, 25 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;
}
