Task.WhenEach

Are you ready to take your asynchronous programming to the next level? With the release of .NET 9, we now have Task.WhenEach – a powerful new API designed to simplify working with multiple tasks concurrently!

What is Task.WhenEach?

Task.WhenEach is a new method that allows you to process tasks as they complete, rather than waiting for all tasks to finish (like Task.WhenAll) or waiting for the first task to complete (like Task.WhenAny). This is a game-changer for scenarios where you want to handle results incrementally and improve responsiveness in your applications.

Why is this useful?

Imagine you're processing a batch of tasks, such as calling multiple APIs, performing database operations, or handling file uploads. With Task.WhenEach, you can start processing results as soon as they're available, without blocking your application. This leads to:

• Better performance: Reduce idle time and improve throughput.
• Enhanced responsiveness: Handle results incrementally for a smoother user experience.
• Simpler code: No more complex loops or manual tracking of task completion.

How does it work?

Here’s a quick example:

In this example, Task.WhenEach processes each task as it completes, allowing you to handle results incrementally.

Why should you care?

If you're building high-performance, responsive applications, Task.WhenEach is a tool you’ll want in your arsenal. It’s perfect for scenarios like:

• Real-time data processing.
• Batch operations with varying completion times.
• Improving scalability in async workflows.