[API Proposal]: Parallel.ForEachTaskAsync

[alrz]

Background and motivation

This would be a variation of Task.WhenEach (#61959) but since it uses a callback, the result can be processed in parallel.

API Proposal

namespace System.Threading.Tasks;

public class Parallel
{
    public Task ForEachTaskAsync(Task<T>[] tasks, Func<Task<T>, Task> body);
}

API Usage

Task<Result>[] tasks = ...;
await Parallel.ForEachTaskAync(tasks, process);

Alternative Designs

No response

Risks

No response

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