What’s New in C# 7.0

C# 7.0 adds a number of new features and brings a focus on data consumption, code simplification and performance. Perhaps the biggest features are tuples, which make it easy to have multiple results, and pattern matching which simplifies code that is conditional on the shape of data. But there are many other features big and small. We hope that they all combine to make your code more efficient and clear, and you more happy and productive.Please use the “send feedback” button at the top of the Visual Studio window to tell us if something is not working as you expect, or if you have thoughts on improvement of the features.There are still a number of things not fully working in Preview 4. In the following I have described the features as they are intended to work when we release the final version, and called out in notes whenever things don’t yet work as planned. I should also call out that plans change – not least as the result of the feedback we get from you! Some of these features may change or disappear by the time the final release comes out