Visual Studio “14” announced, preview available with “Roslyn” open source compiler

Microsoft’s Soma Somasegar has announced the next version of Visual Studio, currently known as Visual Studio 14, but likely to be fully released in 2015 (and, I am guessing, likely to be called Visual Studio 2015).

This is a major release. It includes a new VB and C# compiler which is itself written in managed code, codenamed Roslyn. The open source Roslyn project provides new APIs that enable more powerful IDE features. Visual Basic is getting refactoring support for the first time.

The preview also includes a major update to ASP.NET that unifies ASP.NET MVC and the ASP.NET Web API, and has a new deployment model and developer experience:

Thanks to the Rosyln compiler, if you change ".cs” files or project.json file and want to see the change in the browser, you don’t need to build the project any more. Just refresh the browser.

There is no IIS express, nor IIS involved when you run from the command line. It means that you can publish your website to a USB drive, and run it by double clicking the web.cmd file!

On the C++ side, there is improved C++ 11 support and more features from C++ 14:

The Visual Studio "14" CTP includes support for user-defined literals, noexcept, alignof and alignas, and inheriting constructors from C++11, generalized lambda capture, auto function return type deduction, and generic lambdas from C++14, as well as many more new C++ features.

says Somasegar. There is also a refactored C Runtime (CRT):

msvcr140.dll no longer exists. It is replaced by a trio of DLLs: vcruntime140.dll, appcrt140.dll, and desktopcrt140.dll.

If you install the CTP (mine is downloading) use a spare machine or VM; it is an early preview that does not work side-by-side with other versions and the only uninstall may be to flatten the machine:

Installing a CTP release will place a computer in an unsupported state. For that reason, we recommend only installing CTP releases in a virtual machine, or on a computer that is available for reformatting.

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