The new version is more uniform and interoperable with other .NET languages, and according to Microsoft, F# 6 will ship with .NET 6 RC2 and Visual Studio 2022 RC2, and serves as the next step to making it easier for users to write robust, succinct and performant code.
And perhaps, the major technical feature in F# 6 remains authoring asynchronous tasks more performant, and interoperability with other .NET languages like C#.
What's New in F# 6?
F# 6 provides the feature “overloaded custom operations in computation expressions” which since F# 5.0 has been in preview; the feature allows for simpler DSLs in F# including for web programming and validation.
While F# includes active patterns feature that allows users extend pattern matching in intuitive ways, with F# 6, the feature has been augmented with optional Struct representations for active patterns. Also, in F# 6, the “as” pattern can now itself be a pattern, which is important when a type test has given a stronger type to an input.
The in-memory cross-project referencing feature simplifies working between C# projects, as it allows C# projects to reflect immediately in an F# project without recompiling the C# project on disk.
Additionally, F# developers have the benefit of .NET 6 improvements to satisfy packaging rules for commonly used Linux distributions, and profile-guided optimization, can compile startup code with reduce binary size, at higher quality, and rearrange application binaries so that code used at startup is collocated at the start of the file.
How to Get Started with F# 6?
F# 6 release coincides with the release of Visual Studio 2022 on Windows and F# programmers using this IDE experience will benefit from several improvements in this release.
Visual Studio 2022 on Windows is now available as a 64-bit application, which means you can open, edit, run, and debug even the biggest and most complex solutions without running out of memory.
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