C++: std::threads vs std::for_each

What are the main differences between std::threads and std::for_each in C++?

std::threads allows you to create and manage threads directly, while std::for_each is used for applying a function to a range of elements, often in a parallel manner.

When should I use std::threads instead of std::for_each?

Use std::threads when you need fine-grained control over thread management. std::for_each is better for simpler parallel operations on collections.

Can std::for_each handle complex tasks?

Yes, but it’s best suited for tasks that can be easily divided into smaller, independent operations. For complex tasks, std::threads might be more appropriate.

What are the performance implications of using one over the other?

std::for_each can optimize performance by managing threads internally, while std::threads may introduce overhead due to manual management. It depends on the task complexity.