QtConcurrent-BlockingMapped-Other-Object-Member-Function-Operator: 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. You can alternatively do this using [[QtConcurrent-BlockingMapped-Other-Object-Member-Function-Bind | boost::bind]] | |||
Demonstrates how to pass each object in the container to a member function of different class instance. You can alternatively do this using [ | |||
<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 operator()(const Object& object) { return 1.0f;} | float operator()(const Object& object) { return 1.0f; } | ||
typedef float result_type; | typedef float result_type; | ||
}; | }; | ||
| Line 25: | Line 22: | ||
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(), myClass); | ||
std::cout << result[0] << std::endl; | |||
QVector<float> result = QtConcurrent::blockingMapped<QVector<float> >(v.begin(), v.end(), myClass); | |||
std::cout << result[0] << std::endl; | |||
return 0; | return 0; | ||
} | } | ||
</code> | |||
Latest revision as of 21:50, 7 April 2016
This 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
#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<Object> 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;
}