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//devdigest⚡️ F# Weekly #28, 2025 – Beyond Zero-Allocation🏷️ <a href="https://mastodon.social/tags/devdigest" class="mention hashtag" rel="nofollow noopener" target="_blank">#devdigest</a> <a href="https://mastodon.social/tags/dotnet" class="mention hashtag" rel="nofollow noopener" target="_blank">#dotnet</a> <a href="https://mastodon.social/tags/net" class="mention hashtag" rel="nofollow noopener" target="_blank">#net</a> <a href="https://mastodon.social/tags/fp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fp</a> <a href="https://mastodon.social/tags/fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fsharp</a><a href="https://devdigest.today/goto/4690" rel="nofollow noopener" translate="no" target="_blank">https://devdigest.today/goto/4690</a>

Angel D. MunozI guess we're at that point where it is clear that LLM are useful enough for some tasks, if you're not convinced yet for some reason let me share you a conversation between me and GH copilot agentI tasked it to reimplement the Perla's dev server in suaveio You can see where it was choking and I came in to do the manual work, however the rest was made by it in a few minutes at most <a href="https://gist.github.com/AngelMunoz/47065f6603871ee64b238f7a23674c67" rel="nofollow noopener" translate="no" target="_blank">https://gist.github.com/AngelMunoz/47065f6603871ee64b238f7a23674c67</a><a href="https://hachyderm.io/tags/fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fsharp</a> <a href="https://hachyderm.io/tags/dotnet" class="mention hashtag" rel="nofollow noopener" target="_blank">#dotnet</a>

Angel D. MunozA small release is out for JDeck. This release adds functions to decode F# Maps and BCL Dictionaries which were missing from the last bit (link to release in the next tweet)<a href="https://github.com/AngelMunoz/JDeck/releases/tag/v1.0.0-rc-002" rel="nofollow noopener" translate="no" target="_blank">https://github.com/AngelMunoz/JDeck/releases/tag/v1.0.0-rc-002</a><a href="https://hachyderm.io/tags/fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fsharp</a> <a href="https://hachyderm.io/tags/dotnet" class="mention hashtag" rel="nofollow noopener" target="_blank">#dotnet</a> <a href="https://hachyderm.io/tags/json" class="mention hashtag" rel="nofollow noopener" target="_blank">#json</a> <a href="https://hachyderm.io/tags/jsonserializer" class="mention hashtag" rel="nofollow noopener" target="_blank">#jsonserializer</a> <a href="https://hachyderm.io/tags/library" class="mention hashtag" rel="nofollow noopener" target="_blank">#library</a> <a href="https://hachyderm.io/tags/buildinpublic" class="mention hashtag" rel="nofollow noopener" target="_blank">#buildinpublic</a>

Angel D. MunozThis was a hell of a week There were a LOT of changes to Perla, a massive refactor due in order to keep maintaining the project in a much simpler way.Tests themselves need updates, we might have regressed a little bit and the test command still needs the same refactoringHowever, the refactoring that took place also gave up some cool benefits like download sources support (e.g. local dependencies directory), and adaptive "live" configuration among others <a href="https://github.com/AngelMunoz/Perla/pull/132" rel="nofollow noopener" translate="no" target="_blank">https://github.com/AngelMunoz/Perla/pull/132</a><a href="https://hachyderm.io/tags/dotnet" class="mention hashtag" rel="nofollow noopener" target="_blank">#dotnet</a> <a href="https://hachyderm.io/tags/fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fsharp</a> <a href="https://hachyderm.io/tags/devserver" class="mention hashtag" rel="nofollow noopener" target="_blank">#devserver</a> <a href="https://hachyderm.io/tags/webdev" class="mention hashtag" rel="nofollow noopener" target="_blank">#webdev</a>

brandewinderBlogged: <a href="https://brandewinder.com/2025/07/09/performance-cost-of-try-catch-blocks/" rel="nofollow noopener" translate="no" target="_blank">https://brandewinder.com/2025/07/09/performance-cost-of-try-catch-blocks/</a>Where I look into how small the cost of a try ... catch block is. <a href="https://hachyderm.io/tags/fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fsharp</a> <a href="https://hachyderm.io/tags/dotnet" class="mention hashtag" rel="nofollow noopener" target="_blank">#dotnet</a>

xUnit.netWe just shipped a new prerelease build of the core framework (3.0.0-pre.40).There are no new breaking changes, so this will not reset our release clock for 3.0.0 (which should be in about a week).<a href="https://xunit.net/releases/v3/3.0.0-pre.40" rel="nofollow noopener" translate="no" target="_blank">https://xunit.net/releases/v3/3.0.0-pre.40</a><a href="https://dotnet.social/tags/DotNet" class="mention hashtag" rel="nofollow noopener" target="_blank">#DotNet</a> <a href="https://dotnet.social/tags/CSharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#CSharp</a> <a href="https://dotnet.social/tags/FSharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#FSharp</a> <a href="https://dotnet.social/tags/UnitTest" class="mention hashtag" rel="nofollow noopener" target="_blank">#UnitTest</a> <a href="https://dotnet.social/tags/TDD" class="mention hashtag" rel="nofollow noopener" target="_blank">#TDD</a>

DarrenIf your programming language doesn't give you type safety via inference, get help... I still have mild PTSD from refactoring (and breaking) large code bases in subtle ways. With type safe/type inference, you make fundamental change to a core type and the editor walks you through everything you need to do. I'm using <a href="https://sfba.social/tags/fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fsharp</a> but really recommending this <a href="https://sfba.social/tags/proglang" class="mention hashtag" rel="nofollow noopener" target="_blank">#proglang</a> pattern over say <a href="https://sfba.social/tags/ducktype" class="mention hashtag" rel="nofollow noopener" target="_blank">#ducktype</a> where you find out the mistake at the most expensive point in the coding cycle.

//devdigest⚡️ F# Weekly #27, 2025: Breaking Changes Discussion🏷️ <a href="https://mastodon.social/tags/devdigest" class="mention hashtag" rel="nofollow noopener" target="_blank">#devdigest</a> <a href="https://mastodon.social/tags/dotnet" class="mention hashtag" rel="nofollow noopener" target="_blank">#dotnet</a> <a href="https://mastodon.social/tags/net" class="mention hashtag" rel="nofollow noopener" target="_blank">#net</a> <a href="https://mastodon.social/tags/fp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fp</a> <a href="https://mastodon.social/tags/fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fsharp</a><a href="https://devdigest.today/goto/4673" rel="nofollow noopener" translate="no" target="_blank">https://devdigest.today/goto/4673</a>

xUnit.netJust a reminder that we only have roughly 10 more days of before we ship 3.0. If you've been putting off validating your tests and/or extensions with the latest prerelease, your time is running low...<a href="https://dotnet.social/tags/DotNet" class="mention hashtag" rel="nofollow noopener" target="_blank">#DotNet</a> <a href="https://dotnet.social/tags/CSharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#CSharp</a> <a href="https://dotnet.social/tags/FSharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#FSharp</a> <a href="https://dotnet.social/tags/UnitTest" class="mention hashtag" rel="nofollow noopener" target="_blank">#UnitTest</a> <a href="https://dotnet.social/tags/TDD" class="mention hashtag" rel="nofollow noopener" target="_blank">#TDD</a>

TeärvisusThe State of Rx.NET in 2025<a href="https://www.youtube.com/watch?v=SZpmj0fSfFI" rel="nofollow noopener" translate="no" target="_blank">https://www.youtube.com/watch?v=SZpmj0fSfFI</a>tl;dw:- Still living in dependency hell. They won't release Rx7.0 before solving those issues first. Everything else has lower priority.- AsyncRx.NET will be developed over time.- Ix.NET will not be developed as a part of the Rx project anymore. All LINQ to IAsyncEnumerable stuff will be moved to the core dotnet libraries.<a href="https://mastodon.online/tags/rx" class="mention hashtag" rel="nofollow noopener" target="_blank">#rx</a> <a href="https://mastodon.online/tags/rxnet" class="mention hashtag" rel="nofollow noopener" target="_blank">#rxnet</a> <a href="https://mastodon.online/tags/reactive" class="mention hashtag" rel="nofollow noopener" target="_blank">#reactive</a> <a href="https://mastodon.online/tags/reactiveextensions" class="mention hashtag" rel="nofollow noopener" target="_blank">#reactiveextensions</a> <a href="https://mastodon.online/tags/reactiveprogramming" class="mention hashtag" rel="nofollow noopener" target="_blank">#reactiveprogramming</a> <a href="https://mastodon.online/tags/dotnet" class="mention hashtag" rel="nofollow noopener" target="_blank">#dotnet</a> <a href="https://mastodon.online/tags/csharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#csharp</a> <a href="https://mastodon.online/tags/fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fsharp</a>

thinkbeforecodingFargo.CmdLine now has a vintage logo !Available in v1.7.5 !Fargo is a reflectionless command line argument parser for <a href="https://mastodon.social/tags/fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fsharp</a> with integrated auto completion.<a href="https://www.nuget.org/packages/Fargo.CmdLine/1.7.5" rel="nofollow noopener" translate="no" target="_blank">https://www.nuget.org/packages/Fargo.CmdLine/1.7.5</a>

Bentok :godot:As an <a href="https://mastodon.gamedev.place/tags/fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fsharp</a> dev, I gotta say I love <a href="https://mastodon.gamedev.place/tags/swift" class="mention hashtag" rel="nofollow noopener" target="_blank">#swift</a>. I also love Rust. But so far there’s nothing I’d use Rust for (in my domain) that I couldn’t also use F# for - and the whole server stack is F# so…prudence.Swift however, has a clear, unique use case that F# doesn’t, so I get to indulge professionally.

//devdigest⚡️ F# Weekly #26, 2025 – Sprout: BDD Testing for F#🏷️ <a href="https://mastodon.social/tags/devdigest" class="mention hashtag" rel="nofollow noopener" target="_blank">#devdigest</a> <a href="https://mastodon.social/tags/dotnet" class="mention hashtag" rel="nofollow noopener" target="_blank">#dotnet</a> <a href="https://mastodon.social/tags/net" class="mention hashtag" rel="nofollow noopener" target="_blank">#net</a> <a href="https://mastodon.social/tags/fp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fp</a> <a href="https://mastodon.social/tags/fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fsharp</a><a href="https://devdigest.today/goto/4656" rel="nofollow noopener" translate="no" target="_blank">https://devdigest.today/goto/4656</a>

Giacomo TesioWhile it has its own issues, there are several good reasons why my favourite <a href="https://snac.tesio.it?t=programminglanguage" class="mention hashtag" rel="nofollow noopener" target="_blank">#ProgrammingLanguage</a> in the real world is <a href="https://snac.tesio.it?t=c" class="mention hashtag" rel="nofollow noopener" target="_blank">#C</a>.¹ Why not <a href="https://snac.tesio.it?t=go" class="mention hashtag" rel="nofollow noopener" target="_blank">#Go</a>? Because it's from <a href="https://snac.tesio.it?t=google" class="mention hashtag" rel="nofollow noopener" target="_blank">#Google</a>. Why not <a href="https://snac.tesio.it?t=csharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#Csharp</a> or <a href="https://snac.tesio.it?t=fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#Fsharp</a>? <a href="https://snac.tesio.it?t=microsoft" class="mention hashtag" rel="nofollow noopener" target="_blank">#Microsoft</a>. Why not <a href="https://snac.tesio.it?t=rust" class="mention hashtag" rel="nofollow noopener" target="_blank">#Rust</a> or <a href="https://snac.tesio.it?t=zig" class="mention hashtag" rel="nofollow noopener" target="_blank">#Zig</a>? <a href="https://snac.tesio.it?t=llvm" class="mention hashtag" rel="nofollow noopener" target="_blank">#LLVM</a> (aka <a href="https://snac.tesio.it?t=apple" class="mention hashtag" rel="nofollow noopener" target="_blank">#Apple</a> & friends). Ultimately, most of languages I avoid like the plague are controlled by <a href="https://snac.tesio.it?t=bigtech" class="mention hashtag" rel="nofollow noopener" target="_blank">#BigTech</a> one way or another. C is simple enough to get several alternative compilers based on useful standards.² ³ ¹ In theory I still prefer <a href="https://snac.tesio.it?t=oberon07" class="mention hashtag" rel="nofollow noopener" target="_blank">#Oberon07</a>, but when I want to code something useful I still use C instead to lower the entry barrier for other devs, because there are too many incompatible implementations of the compiler and "standard" library. ² Ok, <a href="https://snac.tesio.it?t=python" class="mention hashtag" rel="nofollow noopener" target="_blank">#Python</a>, <a href="https://snac.tesio.it?t=scheme" class="mention hashtag" rel="nofollow noopener" target="_blank">#Scheme</a> and <a href="https://snac.tesio.it?t=lua" class="mention hashtag" rel="nofollow noopener" target="_blank">#Lua</a> have similar qualities, but for the tools I write I usually prefer binary executables with no runtime. ³ No, <a href="https://snac.tesio.it?t=c" class="mention hashtag" rel="nofollow noopener" target="_blank">#C</a>++ is <a href="https://harmful.cat-v.org/software/c++/I_did_it_for_you_all" rel="nofollow noopener" target="_blank">not an option</a>. 😉

thinkbeforecodingVersion 1.5.3 of Fasmi is out !<a href="https://www.nuget.org/packages/fasmi/1.5.3" rel="nofollow noopener" translate="no" target="_blank">https://www.nuget.org/packages/fasmi/1.5.3</a>Fasmi is a <a href="https://mastodon.social/tags/fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fsharp</a> -> Asm disassembler as a dotnet toolIt now targets net8.0/net9.0, and use Fargo for command line parsing, with completion for pwsh/bash/fish.

thinkbeforecodingVesion 1.5.4 of Fargo.CmdLine is out !Changes: * better display of alternate values in usage (when value is X|Y is displayed as is, without <>) * Auto alignment of descriptions (it was messy when an option was long)Fargo is a reflectionless command line argument parser with integrated auto completion<a href="https://www.nuget.org/packages/Fargo.CmdLine/1.5.4" rel="nofollow noopener" translate="no" target="_blank">https://www.nuget.org/packages/Fargo.CmdLine/1.5.4</a><a href="https://mastodon.social/tags/fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fsharp</a>

Constantin Tews<a href="https://norden.social/tags/FsUnit" class="mention hashtag" rel="nofollow noopener" target="_blank">#FsUnit</a> v7.1.1 released. <a href="https://norden.social/tags/fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fsharp</a> 🦔 See what's new: <a href="https://github.com/fsprojects/FsUnit/releases/tag/7.1.1" rel="nofollow noopener" translate="no" target="_blank">https://github.com/fsprojects/FsUnit/releases/tag/7.1.1</a>

Amplifying F#Hey <a href="https://mastodon.social/tags/fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fsharp</a> This week we'll be joined by <a href="https://hachyderm.io/@Jimmy_byrd" class="u-url mention" rel="nofollow noopener" target="_blank">@Jimmy_byrd</a> for adding support to script files in he F# Analyzers SDK!Check out the link for details: <a href="https://amplifyingfsharp.io/sessions/2025-06-27/" rel="nofollow noopener" translate="no" target="_blank">https://amplifyingfsharp.io/sessions/2025-06-27/</a><a href="https://mastodon.social/tags/dotnet" class="mention hashtag" rel="nofollow noopener" target="_blank">#dotnet</a> <a href="https://mastodon.social/tags/OpenSource" class="mention hashtag" rel="nofollow noopener" target="_blank">#OpenSource</a>

//devdigest⚡️ Refactoring Song Recommendations with F# Combinators🏷️ <a href="https://mastodon.social/tags/devdigest" class="mention hashtag" rel="nofollow noopener" target="_blank">#devdigest</a> <a href="https://mastodon.social/tags/dotnet" class="mention hashtag" rel="nofollow noopener" target="_blank">#dotnet</a> <a href="https://mastodon.social/tags/net" class="mention hashtag" rel="nofollow noopener" target="_blank">#net</a> <a href="https://mastodon.social/tags/fp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fp</a> <a href="https://mastodon.social/tags/fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fsharp</a><a href="https://devdigest.today/goto/4638" rel="nofollow noopener" translate="no" target="_blank">https://devdigest.today/goto/4638</a>

//devdigest⚡️ F# Weekly #25, 2025 – 7 Reasons F# Sucks🏷️ <a href="https://mastodon.social/tags/devdigest" class="mention hashtag" rel="nofollow noopener" target="_blank">#devdigest</a> <a href="https://mastodon.social/tags/dotnet" class="mention hashtag" rel="nofollow noopener" target="_blank">#dotnet</a> <a href="https://mastodon.social/tags/net" class="mention hashtag" rel="nofollow noopener" target="_blank">#net</a> <a href="https://mastodon.social/tags/fp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fp</a> <a href="https://mastodon.social/tags/fsharp" class="mention hashtag" rel="nofollow noopener" target="_blank">#fsharp</a><a href="https://devdigest.today/goto/4637" rel="nofollow noopener" translate="no" target="_blank">https://devdigest.today/goto/4637</a>

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