RFCs (requests for comments) and docs related to the F# language design process.
All open RFCs that have not been released live under /RFCs.
All RFCs that have been implemented in a preview of F# live under /preview.
All release language and FSharp.Core RFCs live under a folder with their respective release.
All tooling RFCs (typically for cross-cutting, cross-editor tooling) live under /tooling.
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Use F# Language Suggestions to submit ideas, vote on them and discuss them.
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Ideas which get "approved in principle" get an RFC entry based on the template, and a corresponding RFC discussion thread
There is currently a backlog of approved ideas. If an idea has been approved and you'd like to accelerate the creation of an RFC, send a PR creating the RFC document for any approved-in-principle issue. First in first served. To "grab the token" send a PR doing nothing but creating or naming the RFC file, and then fill in the further details with additional commits to the PR.
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Implementations and testing are submitted to the dotnet/fsharp repository.
When RFCs are implemented and a version of F# is revved, the RFCs which correspond to the F# version they were implemented in are archived under the appropriate folder.
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Delivery of language features is via RFCs plus implementations submitted to https://github.com/dotnet/fsharp.
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New features that meet our quality bar are then merged and placed beyond a preview flag in the F# compiler and FSharp.Core.
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When we have a handful of 100% “ready, tested and completed” FSharp.Core and F# Language features in preview that aren't "too minor", then we will bump the language version and begin tactical work to release them in a few months.
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New releases of F# typically align with a .NET and/or Visual Studio version.
Any or all of the approved-in-principle items are eligible to catch a release train. That is as good as it gets for a "roadmap" for the language design.
The BDFL (@dsyme) has put together a list of "proposed priority" approved language design items which he plans to focus on or which other people have taken past RFC stage. This is not a roadmap, because other people will choose to prioritize other approved items (e.g. match! - which is not a priority item for me), and is also subject to change and edit.. It is an informal list. You can find that list here: https://github.com/fsharp/fslang-suggestions/labels/proposed-priority
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