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QtConcurrent-BlockingMapped-Other-Object-Member-Function-Bind: Difference between revisions
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[[Category:HowTo]] | |||
This 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 [[QtConcurrent-BlockingMapped-Other-Object-Member-Function-Operator | operator()]] | |||
<code> | <code> | ||
#include <QtConcurrentMap> | #include <QtConcurrentMap> | ||
#include <QVector> | #include <QVector> | ||
#include <boost/bind.hpp> | #include <boost/bind.hpp> | ||
#include <iostream> | #include <iostream> | ||
| Line 16: | Line 13: | ||
{ | { | ||
public: | public: | ||
float Test(const Object& object) const { return 1.0f;} // Note, this function MUST be const! | float Test(const Object& object) const { return 1.0f; } // Note, this function MUST be const! | ||
}; | }; | ||
| Line 24: | Line 21: | ||
Object a; | Object a; | ||
v.push_back(a); | v.push_back(a); | ||
MyClass myClass; | |||
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; | |||
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; | return 0; | ||
} | } | ||
</code> | |||
Latest revision as of 02:14, 18 May 2017
This 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()
#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<Object> 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;
}