Difference between revisions of "QtConcurrent-BlockingMapped-Other-Object-Member-Function-Bind"

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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 [http://developer.qt.nokia.com/wiki/QtConcurrent-BlockingMapped-Other-Object-Member-Function-Operator operator()] ''[developer.qt.nokia.com]''
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[[Category:HowTo]]
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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()]]
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<code>
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#include <QtConcurrentMap>
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#include <QVector>
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#include <boost/bind.hpp>
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#include <iostream>
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class Object{};
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class MyClass
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{
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public:
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float Test(const Object& object) const { return 1.0f; } // Note, this function MUST be const!
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};
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int main()
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{
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QVector<Object> v;
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Object a;
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v.push_back(a);
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MyClass myClass;
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QVector<float> result = QtConcurrent::blockingMapped<QVector<float> >(v.begin(), v.end(), boost::bind(&MyClass::Test, &myClass, _1));
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std::cout << result[0] << std::endl;
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return 0;
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}
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</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()

  1. include <QtConcurrentMap>
  2. include <QVector>
  3. include <boost/bind.hpp>
  4. 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;

}