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

From Qt Wiki
Jump to navigation Jump to search
No edit summary
No edit summary
Line 1: Line 1:
This demonstrates how to call a member function on each item in the container and get a collection of the return values.<br /><code><br />#include <QtConcurrentMap><br />#include <QVector>
This demonstrates how to call a member function on each item in the container and get a collection of the return values.
<code>
#include <QtConcurrentMap>
#include <QVector>


#include <iostream>
#include <iostream>


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


int main()<br />{<br /> QVector<MyClass> v;<br /> MyClass a;<br /> v.push_back(a);
int main()
{
QVector<MyClass> v;
MyClass 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(), &amp;MyClass::Test);


return 0;<br />}
return 0;
}

Revision as of 11:29, 25 February 2015

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; }

Retrieved from "https://wiki.qt.io/index.php?title=QtConcurrent-BlockingMapped-Member-Function-of-iterated-objects&oldid=7474"