Sergey Tihon's Blog

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• F# Deep Dives – final eBook is available now!
• The new CloudSharper is out with WebSharper 3.0 support!
• Your favorite F# book?  Can you recommend a good beginner’s book for F#? Join discussions.
• Deploying remote actors using Vagrant and Thespian. (It even works with custom types).
• .NET projects using distribution can benefit considerably by using Vagrant.
• WebSharper 3.0-alpha now has source maps for happier debugging.
• Do not forget to subscribe to F# Show newsletter.

Videos/Presentations/Courses

• Writing Compilers with Phil Trelford.
• F# Show #1: The F# Software Foundation with Mathias Brandewinder, Andrea Magnorsky, Tomas Petricek, Phil Trelford and Scott Wlaschin

This week from F# Advent Calendar in English

• Christmas Carol and other eigenvectors – Evelina Gabasova
• Pure functional applications (in F#) – Tomas Jansson
• Good times with F# – Mark Seemann
• Modelling Inheritance With Inheritance – Michael Newton
• Having fun with type-level numbers using a type-provider – Carsten König
• Textogramme – Mathias Brandewinder
• The Internet of Things at Scale with F# and Actors – Anthony Brown

This week from F# Advent Calendar in Japanese

• アクティブパターンでアクティブになる – adacola
• FsAttoparsecについて – pocketberserker
• FsLab JournalでReproducible Research(レポート)を簡単に作りたい – teramonagi
• 継続は力なり – u_1roh
• F#で謎カウンターを作るとき、let mutableでなくrefを使う（使っていた）のはなぜ？– komorebikoboshi
• Linux で F# を始める – c0hama
• Hindley-Milner型推論アルゴリズムをF#で書いてみた – pocarist

Blogs

• Simon Cousins updated “Does the Language You Use Make a Difference (revisited)?“.
• Review: F# Deep Dives – Sergey Tihon
• Why F# became my goto language – Mårten Rånge.
• Pure Functional Approach to the Visitor Pattern – Matthew Mcveigh.
• On showing off vs fighting for adoption of functional languages – Bjørn Einar Bjartnes.
• Refactored SMS sender – Bjørn Einar Bjartnes.
• Scraping VZB network latency tables in F# – jnazario.
• Functional Vs Imperative language paradigms – Aficionado.
• Step 1 – Phonecat Backend Using Web Api and TypeProviders – TamizhVendan.
• VDM-SL Example: Order Processing –  Mataphor Engineering.
• Generating App Screenshots Using Xamarin.UITest – Greg Shackles.

F# vNext News

• Visual F# Team need your help here:
  • should not allow Framework 4 / F# 3.1 combination in project properties
  • Add support for parallel build in VS
  • Add warning when raise/failwith/failwithf functions are passed extra arguments
  • #I in .fsx clobbers previous #I
• Recently accepted PRs:
  • warnings are error
  • add an active pattern for decimal
  • add nonstructuralcomparison ops
• Recently proposed RPs:
  • fix for issue 201

New releases

• Paket 0.18.10
• Streams 0.2.7.
• Tresi 1.0
• FSharp.Data.SqlClient 1.5.5
• FSharp.Configuration 0.4.8
• CloudSharper 0.9.23
• WebSharper 3.0.3-alpha
• Logary 2.2.0
• EventStore.Client.FSharp 3.1.1

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

Previous F# Weekly edition – #50

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• Paket.VisualStudio was presented.
• Akka.NET v0.7.1 is now live on NuGet with brand new F# API.
• Fixed “design time memory leak” in FSharp.Configuration. Check your Type Provides for the same bug: update to the latest version of ProvidedTypes.fs from FSharp.TypeProviders.StarterPack and do not override Dispose method.
• Emacs pretty-mode now has F# support.
• Tsunami IDE no longer requires you to log in or have an internet access to use.
• F# plugin connects BeakerNoteBook and the whole .net world.
• Mono Docker image available in the “official” repo Includes F# 3.1.
• DependencyGraph – A small F# application to visualize .net assembly dependencies.
• FSharp.Core.NextVersion.Shim – provides a shim for library functions that will get available in the next FSharp.Core library.
• Hans-Martin Will work on SpaceCurve type provider.

Videos/Presentations/Courses

• Xamarin Evolve 2014: Mobile App Development in F# – Rachael Reese, Firefly Logic

This week from F# Advent Calendar in English

• Composing Christmas with F# – Tomas Petricek
• Using IBM’s Watson With F# – Jamie Dixon
• Terror from the Deep – Dave Thomas
• Becoming an F# contributor – Mårten Rånge
• FSharp and games in celebration times – Andrea Magnorsky
• F# for social media analytics – John Tarbox
• Akka.NET remote deployment with F# – Bartosz Sypytkowski

This week from F# Advent Calendar in Japanese

• FSharperならこう書く(A Poker Game Program) – ねの
• クラスのコンストラクタ呼び出し時にプロパティも同時に初期化する – bleis-tift
• コンピュテーション式の変形後を覗き見る – ざっきー
• Visual F# Power Tools の紹介 – gab_km
• F#で2ch専用ブラウザをつくろう – ichiohta
• 世界をちょっと支配してみた – omanuke
• F# から Fortarn の関数を呼び出そう – moonmile

Blogs

• Choosing properties for property-based testing – Scott Wlaschin
• Extending a 3rd-party API with F# units of measure – Lincoln Atkinson
• News from WebSharper 3.0: NuGet, Visual Studio, Mono, upcoming features and API changes – Loïc Denuzière
• Finite State Machine Compiler – Phillip Trelford
• Web Application Development in Fsharp Using ASP.NET MVC – TamizhVendan S
• How to properly disable FSharpLint while working with NCrunch – Akim Boyko
• Properties for Easter… – bjartwolf

F# vNext News

• F# developers Visual F# Team need your help. Please dogfood F# 4.0 find and raise issues here.
• Please build your large C# and F# projects with VS 2015. Visual F# Team need to know of all comparability issues for these languages.
• Recently accepted PRs:
  • alignment with github.com/fsharp
  • fix #29 – internal module reference
  • add tryunbox, isnull and option fns
  • use strongly-typed weakreference
  • provide asyncdownloadfile and -data
  • implement seq.foldback2
• Recently proposed ideas:
  • Length constraints on lists and arrays
  • Add curry and uncurry functions

New releases

• Paket 0.18.9.
• FSharp.Core 3.1.2.1
• FSharp.Compiler.Service 0.0.81
• Akka.FSharp 0.7.1
• FSharp.Data.SqlClient 1.5.3
• EventStore.Client.FSharp 3.0.7
• FSharp.Charting and FSharp.Charting.Gtk 0.90.9
• Logary 2.0.3
• FSharp.Actor-logary 2.0.2
• Nu Game Engine v0.995
• FSharp.Configuration 0.4.7
• Stacks.FSharp 1.2.0
• FAKE 3.11.4

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

Previous F# Weekly edition – #49

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• Call-to-action from Don Syme: Join the F# Foundation & help promote, protect, and advance the language!
• WebSharper goes Apache right now. v3.0 is coming.
• WebSharper migration to GitHub is completed!
• Tons of fun videos from NDC London (full list of talks).
• FAKE has 100 contributors and they managed to open the license.
• Akka.NET needs more F#’ers to eval our F# API.
• FSharp.Core now available on NuGet in a sane manner.
• Get up to 30 Pluralsight courses in your MSDN subscription.
• Do not miss “Introducing .NET Core“.
• Want F# IntelliSense support in LinqPad? Vote here.
• Matthew Moloney presented F# text editor in 3D with syntax highlighting.

Videos/Presentations/Courses

• The F# Way To Relaxation (slides) by Don Syme (there are some problems with audio)
• Railway oriented programming: Error handling in functional languages by Scott Wlaschin
• Write Your Own Compiler in 24 Hours (slides and code) by Phillip Trelford
• Equivalence Classes, xUnit.net, FsCheck, Property-Based Testing by Mark Seemann
• Mona Lisa, F# and Azure: simple solutions to hard problems by Mathias Brandewinder
• Functional programming design patterns (slides) by Scott Wlaschin (comming soon)
• Biological Computing in F# by Rasmus Petersen and Colin Gravill
• Actor-based Concurrency with F# and Akka.NET (+code) by Akim Boyko
• Above and beyond Python programming FSharp for Trading and Finance by Bryan Downing
• Understanding social networks with F# (slides & code) by Evelina Gabasova
• Event Sourcing by Michael Newton
• F#, this aint a game by Andrea Magnorsky (slides)
• Elixir Language, Concurrency, Iteration by José Valim
• My adventure with Elm by Yan Cui

This week from F# Advent Calendar in English

• FsCheck and property-based testing – Scott Wlaschin
• Snowflakes – Philae Trelford
• My Introduction to Data Science with F# – Jon Wood
• Distributing the F# Mailbox Processor – Isaac Abraham
• Decorating Immutable Christmas Trees – Richard Dalton
• Christmas F# Polymorphism – Steve Shogren
• Developing an Algorithm in F#: Fast Rotational Alignments with Gosper’s Hack – Richard Minerich

This week from F# Advent Calendar in Japanese

• Computation Expressions Tips – pocketberserker
• AutoOpenAttribute– htid46
• Introduction to ApiaryProvider – otf
• F# Project Scaffold: Getting started – yukitos
• 実例に見るSource変換活用術 – bleis-tift
• State in computation expressions– kos59125
• FSharpLint: Linter for F# code – k_dispose

Blogs

• Predicting Physician Gender Using AzureML and F# – Jamie Dixon
• Using F# and FFmpeg to take thumbnails from video – Erlend Wiig
• F(by) 2014: Photos and slides.
• Extending a 3rd-party API with F# units of measure – Lincoln Atkinson
• Generating Permutations: Clojure or F#: Part 2 – Boris Kogan
• Modelling Stochastically Independent Processes with F# Computation Expressions: Part 1 – Boris Kogan
• Being visually honest with F# – Yan Cui
• F# Functions Explained – Currying & Partial Application – Ankit Solanki

F# vNext News

• Schedule plans for the remainder of Visual F# 4.0 development.
• Recently accepted PRs:
  • non-nullable provided types
  • better ide feedback for tp bugs
• Recently proposed PRs (please review and comment):
  • provided extension members
  • alignment with github.com/fsharp
• Recently proposed ideas:
  • Support .NET Core and CoreCLR

New releases

• Paket 0.17.19.
• FSharp.CloudAgent 0.3
• WebSharper 2.5.134
• Stanford.NLP.* v3.5 and Stanford.NLP.Parser.Fsharp v0.0.9 using new IKVM for Java8.
• FSharp.Core 3.1.2
• FSharp.Configuration 0.4.6.
• FSharp.Control.Reactive 3.0.1
• R.NET F# Utility 0.1.11
• FSharp.Actor-logary 2.0.1
• EaToSql 0.0.5-alpha
• Chrisjdobson.WebSharper.SignalR 0.4.1
• Suave 0.19.1

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

Previous F# Weekly edition – #48

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• Do not miss F# Advent Calendar: English and Japanese versions are starting today.
• Please help these F# projects achieve “green” status for cross-platform CI builds.
• FAKE most probably is the best .NET build system of today.
• If you’re feeling lonely, tweet #fsharp. You have 88% probability that someone will RT or favorite it.
• A new book: Machine Learning Projects for .NET Developers by Mathias Brandewinder.
• A new Type Provider opportunity: hal+json.
• Using FSharp.Data? If you can, please help Gustavo Guerra scale CsvProvider to 5GB+ files

Videos/Presentations/Courses

• Introduction to Machine Learning (Using R and F# with examples from Kaggle competitions) – by Akim Boyko
• All-round strongly-typed approach to MS CRM – Ramón Soto Mathiesen
• F# and Open Source – Andrea Magnorsky
• Streams – Nick Palladinos
• Modelling environment update for plankton study – Matthew Smith (The ecology group at Microsoft Research have been using F# to model the science of plankton)

Blogs

• An introduction to property-based testing – Scott Wlaschin (FsAdvent)
• Your application should be a pure function – Tomas Jansson
• What is Behind the Rendering Design of DotPdf? – Steve Hawley
• f(by) Minsk 2014 – Phil Trelford
• Sending SMS on NServiceBus in FSharp – Bjørn Einar Bjartnes
• Typed Hack of Cloudant using F# – Kunjan Dalal
• Generating valid F# source code for testing with FsCheck – Anh-Dung Phan
• Generating Permutations: Clojure or F#: Part 1 – Boris Kogan
• Working with Non-Compliant OWIN Middleware – Ryan Riley
• Introducing SourceLink.SymbolStore – Cameron Taggart
• Project reference resolution using FSharp.Compiler.Service – Robin Neatherway
• F#’s strongest year yet – Martin Trojer
• Evolution of the F# Empty WPF Template – Daniel Mohl

F# vNext News

• Recently accepted PRs:
  • set boundary for console.cursortop
  • use array.subunchecked in array.fs
  • document exceptions in array module
• Recently proposed PRs (please review and comment):
  • cleanup and file renames
  • converted readme to markdown format
  • implement seq.foldback2
  • use strongly-typed weakreference
• Recently proposed ideas:
  • Simplify assigning a mutable DU value

The F# Open Projects Group is looking for a primary active maintainer for the following repositories:

• fsprojects/Foogle.Charts
• fsprojects/FSharp.Collections.ParallelSeq
• fsprojects/FSharp.Compiler.CodeDom
• fsprojects/FSharp.Data.Experimental.XenomorphProvider
• fsprojects/FSharp.Data.HiveProvider
• fsprojects/FsLexYacc
• fsprojects/GraphProvider
• fsprojects/powerpack

New releases

• Paket 0.17.1.
• Math.NET Numerics for F# 3.3.0 (+signed version)
• FSharp.Quotations.Evaluator 1.0.4
• FAKE 3.10 released with support for MSBuild 14, couple of new MSDynNAV features and new csc.exe helper.
• EventStore.Client F# API 3.0.2
• FSharp.CloudAgent 0.2
• FSharp.TypeProviders.StarterPack 1.1.3.53
• Emacs F# mode v1.5.0.
• fsharp-mode (20141125.1614)

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

Previous F# Weekly edition – #47

Welcome to F# Weekly,

A roundup of F# content from this past week:

News

• Thank you everybody who helped to raise an initial budget of FSSF!
• Join F# Advent Calendar 2014 & F# Advent Calendar in English 2014!
• Check out a brand-new Visual F# Power Tools FAQ.
• www.lambdadays.org is waiting for F# speakers!
• nugetmusthaves.com allows you to discover NuGet dependencies.
• Check out F#nctional Times – it’s very neat.
• Plans for .NET source code and Mono integration
• Eirik Tsarpalis works on QuotationCompiler library.

Videos/Presentations/Courses

• The F# Programming Language on TIOBE
• Detangling software dependency networks (+code) – Evelina Gabasova
• Introduction to FunScript (Spanish – Madrid F# Meetup)
• Type Providers (+code) – Michael Newton
• F#, this ain’t a game – Andrea Magnorsky
• Learn you to tame complex APIs with F#-powered DSLs – Yan Cui
• Functional Programming Patterns (BuildStuff ’14) – Scott Wlaschin
• Teaching programming language concepts with F# (Peter Sestoft) – part 1, part 2 & materials.

Blogs

• Seq vs Streams – Phil Trelford
• F# Named Union Fields – Gustavo Guerra
• FunSnake (code) – Alberto Ayuso
• F# FunScript with NancyFx and Ractive – Andre Van Der Merwe
• Implementing (Parts Of) ASP.NET Identity Using F# – Jamie Dixon
• I Saw My Reflection and Cried … – Dave Thomas
• Visual F# 4.0 Preview – Michael Domingo (Visual Studio Magazine)
• F# Type Providers – Hightech
• Fun with Code Diagnostic Analyzers – Dave Fancher
• Modeling Mars rovers with F# – Mark Watts
• Operator precedence: F# and Haskell – Kevin Cantù
• NuGet dependency visualizer with F# and Graphviz – Sergey Tihon
• Manage Azure Blobs with F# – David Crook
• F# Keyboard Bindings with AutoHotkey – TeaDrivenDev
• F# in ASP.NET 5: The good, the bad, and the really ugly – Aleksander Heintz
• Android Wear Starter Project – F# + Xamarin – Faisal Waris
• FAKE Everywhere – Ilker Cetinkaya
• Suave in a Docker container on MS Azure using Xamarin Studio and Mono on a Mac
• Hello World Suave – Henrik Feldt
• Expresiones de cálculo personalizadas – Alex Casquete
• Soirée FsiBot – Le bot twitter écrit en F# sur Azure – Michel Perfetti
• F#-Entwicklung für Visual Studio 2015 – das ist neu – Judith Lungstraß

F# vNext News

• F# project system now supports “up-to-date” builds!
• OSS folks Visual F# Team needs your help!!!! Please take time to review and comment on the PR’s they have yet to pull.
• Recently proposed PRs (please review and comment):
  • add support for try-with-finally
  • fix #29 – internal module reference
  • warnings are error
• Recently proposed ideas:
  • Add a get! or !! operator to computation expressions
  • Add an effect system
  • Scala like ‘case class’ feature in ‘type’ definition
  • Add try-with-finally for consistency

New releases

• FSharp.Compiler.Service v0.0.80
• Paket 0.16.0-alpha001.
• FSharp.Data.SqlClient v1.4.5.
• FSharp.Quotations.Evaluator v1.0.3
• FSharp.Data.SqlClient v1.4.5
• Nu Game Engine v0.993
• CloudSharper 0.9.22.2

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

Previous F# Weekly edition – #46