Question

Imagine I have an function which goes through one million/billion strings and checks smth in them.

f.ex:

foreach (String item in ListOfStrings) {     result.add(CalculateSmth(item)); } 

it consumes lot’s of time, because CalculateSmth is very time consuming function.

I want to ask: how to integrate multithreading in this kinda process?

f.ex: I want to fire-up 5 threads and each of them returns some results, and thats goes-on till the list has items.

Maybe anyone can show some examples or articles..

Forgot to mention I need it in .NET 2.0

Answer 1

You could try the Parallel extensions (part of .NET 4.0)

These allow you to write something like:

Parallel.Foreach (ListOfStrings, (item) =>      result.add(CalculateSmth(item)); ); 

Of course result.add would need to be thread safe.