Does Qt has an equivalent of C# parallel.foreach?

Dr. No

C# has a very easy way to run a block in parallel, like this:

Parallel.ForEach(arr, item =>
{
     doSomethingWith(item);
});

C#'s doc: https://msdn.microsoft.com/en-us/library/system.threading.tasks.parallel.foreach(v=vs.110).aspx

Is there an equivalente in Qt?

SGaist

Hi,

You are likely looking for the QtConcurrent module.

Dr. No

I just found omp header in Qt:

#pragma omp parallel for
for(int i = 1; i < size; ++i) {
  // ...
}

VRonin

Use QtConcurrent::blockingMapped(std::begin(arr),std::end(arr),doSomethingWith) or std::for_each(std::execution::par,std::begin(arr),std::end(arr),doSomethingWith) (C++17 onward)