✨ I remember the first time I needed to count items by category in C#. Of course, LINQ had me covered — but the code always felt… verbose.
var counts = items .GroupBy(x => x.Category) .Select(g => new );
It worked, but it never felt elegant.
Fast forward to .NET 9 and Microsoft gave us a little gift 🎁: CountBy
var counts = items.CountBy(x => x.Category);
That’s it. One line. Clean, expressive, and exactly what I meant. For me, this is more than just syntactic sugar — it’s about making code more readable and intuitive.
Because at the end of the day, clarity is what keeps teams productive.
👉 Curious to hear: how are you using CountBy (or planning to) in your projects?
I’m already using it for analytics dashboards and log summarization.
#dotnet #csharp #linq #net9 #developerexperience #cleanCode