F# Weekly #10, 2016

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• The week in .NET – 3/1/2016
• The NDCOslo agenda has been published
• F# eXchange 2016 is coming (15th April)

fsharpConf 2016 Videos

• Welcome to fsharpConf – Don Syme & Tomas Petricek
• The F#orce Awakens – Evelina Gabasova
• Patterns and Practices for Real-World Event-Driven Microservices – Rachel Reese
• DEMO: Fun and Games with F# – Sean Trelford
• The 3D Geometry of Louvre Abu Dhabi – Goswin Rothenthal
• Types + Properties = Software – Mark Seemann
• DEMO: Ionide & Cross-platform F# Tools – Krzysztof Cieslak
• F# Microservices with Logging, Tracing and More on Docker – Henrik Feldt
• Web UI Automation with F# and canopy – Chris Holt
• INTERVIEW: Using F# at Jet.com – Rachel Reese
• Android Watch Gesture Recognition with ‘Functional’ State Machines – Faisal Waris
• Cassandra, Docker and F# Awesomeness – Alena Hall
• INTERVIEW: F# Community in Japan – Yukitoshi Suzuki
• A Boardgame Night with Geeks – Felienne Hermans
• Q&A with the F# Team and Community – David Stephens & Tomas Petricek

Videos/Presentations

• Code Review/Refactor Live with Scott Wlaschin
• Taming Cloud Complexity with F# DSLs with Yan Cui

Blogs

• Type Providers Live – the Movie – Michael Newton
• Server MVC and Solving the Wrong Problem – Ryan Riley
• Parallelizing algorithms with the Actor Model – Juan M Gómez
• Exercises in Programming Style–Declared Intentions – Yan Cui
• Using SignalR in FSharp without Dynamic – Dave Shaw
• Building a Poker Bot: Mouse Movements – Mikhail Shilkov
• Exercises in Programming Style–Quarantine – Yan Cui
• Ad-hoc Arbitraries – now with pipes – Mark Seemann
• Create an animated menu with WebSharper.UI.Next – Kimserey Lam
• Using Node.js and NPM with Paket and FAKE – Krzysztof Cieslak
• Working With ProjectScaffold : 0 – Introduction – John Azariah
• How to Daxif, plug-in synchronization – Ramón Soto Mathiesen
• MSCRM and OData from ConsoleApp/Script without annoying web login form – Ramón Soto Mathiesen
• Tracking Apple Pencil angles and pressure with Xamarin – larry
• Learning F#: The Game of Life – Scott Nimrod
• Installing F# – Karthik Chintala
• GPUs and Domain Specific Languages for Life Insurance Modeling – Daniel Egloff
• Type Provider Pro-Tip: Using Dictionary – Michael Newton
• Managing RabbitMQ messages with F# and Akka.NET – Erlend Wiig

F# vNext

• Created F# Language Design RFCs:
  • F# RFC FS-1001 – String Interpolation
  • F# RFC FS-1002 – Cartesian product function for collections
  • F# RFC FS-1003 – nameof Operator
  • F# RFC FS-1004 – Result type
  • F# RFC FS-0005 – Underscore Literals
  • F# RFC FS-0006 – Struct Tuples and Interop with C# 7.0 Tuples
  • F# RFC FS-1007 – Additional Option module functions
  • F# RFC FS-0008 – Struct Records
• Recently proposed ideas:
  • Make tuple defined DU cases more consistent with tuple
  • Add units of measure for standard type aliases
  • Code succinctness: Relax syntax rules for the else branch of an if expression (from Ada 2012)
  • Allow generic type constraints for union and record
  • Code robustness: Range of admissible values for class fields and record fields (from Ada 2012)
  • Code robustness: Types with ranges of admissible values (from Ada 2012)
  • Types with default initial values specified (from Ada 2012)
  • Types with predicates to create subtypes easily (from Ada 2012)
  • Allow basic integer numeric type names in a for loop (from Ada 2012)
  • Allow enumeration type names and discriminated union type names in a for loop (from Ada 2012)
  • Use the in keyword and “|” symbol for membership tests and better readability (from Ada 2012)
  • Inline Record Definition in Discriminated Unions
  • Allow flexible types in default constructor constraint
  • Allow more flexible layout for constraint syntax
  • Add a shorthand/literal syntax for creating Maps
  • Allow function names to end with a question mark.
  • Improve Discriminated Union Type Inference
  • #r #load via fsi method
  • Map keys <–> set compatibility
  • Add Polymorphic Variants (ad-hoc Discriminated Unions)

Open source projects

• bedbrebo – Domain Driven Design – CQRS – Event Sourcing Workshop
• FSharp.SSEClient – Server-Sent Events Client
• cyoa – Choose Your Own Adventure type provider
• fsharp-swapi – F# wrapper for the Star Wars API

New Releases

• FSharp.Data.SqlClient 1.8.1
• FSharp.Configuration 0.5.12
• FSharp.SRGen.Build.Tasks 2.0.1
• FAKE 4.21 comes with helpers for Slack, SonarQube and Chocolatey (and fix for NuGet)
• FSharp.Core.Extra 0.1.47
• Yaaf.FSharp.Helper 0.2.0
• FAKE.Persimmon 1.0.4
• Prime – An F# primitives library. 1.1.0

That’s all for now. Have a great week.

Previous F# Weekly edition – #9