QtConcurrent-BlockingMapped-Other-Object-Member-Function-Bind: Difference between revisions
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| Line 16: | Line 16: | ||
{ | { | ||
public: | public: | ||
float Test(const Object& | float Test(const Object& object) const { return 1.0f;} // Note, this function MUST be const! | ||
}; | }; | ||
int main() | int main() | ||
{ | { | ||
QVector | QVector<Object> v; | ||
Object a; | Object a; | ||
v.push_back(a); | v.push_back(a); | ||
| Line 27: | Line 27: | ||
MyClass myClass; | MyClass myClass; | ||
QVector<float> result = QtConcurrent::blockingMapped<QVector<float> >(v.begin(), v.end(), boost::bind(& | QVector<float> result = QtConcurrent::blockingMapped<QVector<float> >(v.begin(), v.end(), boost::bind(&MyClass::Test, &myClass, _1)); | ||
std::cout << result[0] << std::endl; | std::cout << result[0] << std::endl; | ||
return 0; | return 0; | ||
} | } | ||
Revision as of 17:44, 12 March 2015
| This article may require cleanup to meet the Qt Wiki's quality standards. Reason: Auto-imported from ExpressionEngine. Please improve this article if you can. Remove the {{cleanup}} tag and add this page to Updated pages list after it's clean. |
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;
}