QtConcurrent-BlockingMapped-Member-Function-of-iterated-objects: Difference between revisions

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[[Category:HowTo]]
This demonstrates how to call a member function on each item in the container and get a collection of the return values.
This demonstrates how to call a member function on each item in the container and get a collection of the return values.
<code>
<code>
#include <QtConcurrentMap>
#include <QtConcurrentMap>
#include <QVector>
#include <QVector>
#include <iostream>
#include <iostream>


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{
{
public:
public:
float Test() const // Note, this function MUST be const!
  float Test() const { // Note, this function MUST be const!
{
  return 1.0f;
return 1.0f;
  }
}
};
};


int main()
int main() {
{
  QVector<MyClass> v;
  QVector<MyClass> v;
  MyClass a;
  MyClass a;
  v.push_back(a);
  v.push_back(a);
 
QVector<float> result = QtConcurrent::blockingMapped<QVector<float> >(v.begin(), v.end(), &MyClass::Test);
QVector<float> result = QtConcurrent::blockingMapped<QVector<float> >(v.begin(), v.end(), &amp;MyClass::Test);
return 0;
 
return 0;
}
}
</code>

Latest revision as of 21:49, 7 April 2016

This demonstrates how to call a member function on each item in the container and get a collection of the return values. 

#include <QtConcurrentMap>
#include <QVector>
#include <iostream>

class MyClass
{
public:
  float Test() const { // Note, this function MUST be const!
   return 1.0f;
  }
};

int main() {
 QVector<MyClass> v;
 MyClass a;
 v.push_back(a);
 QVector<float> result = QtConcurrent::blockingMapped<QVector<float> >(v.begin(), v.end(), &MyClass::Test);
 return 0;
}
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