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

From Qt Wiki
Jump to navigation Jump to search
(Add "cleanup" tag)
(Decode HTML entity names)
Line 23: Line 23:
  v.push_back(a);
  v.push_back(a);


QVector<float> result = QtConcurrent::blockingMapped<QVector<float> >(v.begin(), v.end(), &amp;MyClass::Test);
QVector<float> result = QtConcurrent::blockingMapped<QVector<float> >(v.begin(), v.end(), &MyClass::Test);


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.

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

  1. include <QtConcurrentMap>
  2. include <QVector>
  1. 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; }