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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> | ||
| Line 11: | Line 9: | ||
{ | { | ||
public: | public: | ||
float Test() const { // Note, this function MUST be const! | |||
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(), &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;
}