Microsoft introduces file-based apps in C# 14 with .NET 10 Preview 4, allowing developers to run standalone C# files directly using 'dotnet run app.cs' without requiring project files or folder structures. This feature makes C# more accessible for scripting, prototyping, and learning scenarios, similar to Python and JavaScript. The capability includes file-level directives for declaring packages and properties, maintains full language compatibility, and can scale to full applications. Future updates will enhance Visual Studio Code integration and support multiple files.
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