Welcome to F# Weekly,
A roundup of F# content from this past week:
News
Angel Munoz: Mibo.Raylib 1.0.0 is Out – F# micro framework for code-first Raylib games
Loïc Denuzière: Domain Modeling Made Functional is in the Functional Programming Humble Bundle
Fable v5.1.0 is out 🎉Several bugfixes for most targets, and a few new features as well github.com/fable-compil… #fsharp #fablecompiler— Dag…
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Funsho Awotunde is an inspirational gospel musician, pianist, producer, songwriter, and music director with over three decades of experience.
As the convener of The Fellowship, he creates a platform for worship and biblical teaching, uniting people in one accord, as inspired by Acts 2:1. Through his ministry, Funsho Awotunde inspires heartfelt worship, provides biblical insight, and fosters a…
@fsharp finds Shauna feeling unwell the morning after the seance...
The seance had been just a game. She was happy to go along with it, at first. But maybe it was a stupid idea, ultimately -- Jackie had good intentions, but it had clearly upset Lottie... and Laura Lee for that matter. But Shauna hadn't been a vessel for any spirits. Even a silly childhood game took on a dark, ritual meaning here in the woods. And everyone's nerves were about as tense, moods as precarious as the twine tied to the knife last night.
The sword of Damocles was hanging over their team but Shauna couldn't feel anything but comfort in being the one holding it aloft.
She didn't believe in ghosts, not really. The only thing Shauna had within her, though, was this baby which only Tai had learned about. No devils, no fever, no spirits. Not even any food, which made this morning exceptionally difficult as a wave of nausea passed over her. The only comfort, at least, was that given the team's situation, it wasn't unheard of for girls to feel sick or dizzy. Lottie was sleeping off a fever and her new self-inflicted wounds. So it wasn't like anyone was going to point a finger at her and cry morning sickness.
Still, Shauna wasn't particularly thrilled either way as she trudged off into the brush while everyone else seemed otherwise occupied. She knelt down near a tree and braced herself against it, head hanging over the rough earth below. She watched some sort of beetle crawl away while her mouth began to salivate dangerously.
Privacy was a luxury in their bid for survival, though, and it wasn't long before she heard the crunching of twigs nearby. Shauna coughed, wiping her mouth before turning her head to see --
"Oh... h-hi, Laura Lee. Did -- were you following me?"
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This seems like a good place to share my absolute favorite line of code.
Sometimes I need to take a version number - something like 5 or 6.4 or 2.25.1 - and see whether it's newer or older than another version number, or maybe just take a list of version numbers like this and put them in order.
The projects I'm working on usually have at least a bit of F# code, or a dependency on an F# library (even if most of the code is C#), so I usually turn to my favorite bit of code to create an equatable, sortable, and immutable "version number" type:
type ProductVersion = { components: int list }
That's literally all you need to make a type that stores a version number, and can be compared and sorted in the proper order (so that 10.25 comes after 10.4, for example). This is because the F# record type implements comparison using its underlying fields, in order, and the one field in this record is an F# list, which implements comparison through its elements, in order - which is exactly what we want.
Of course, you'll still want some code to convert to and from strings. Here's the full code:
type ProductVersion = { components: int list }
with
override this.ToString() = this.components |> Seq.map string |> String.concat "."
member this.IsGreaterThan(x) = this > x
member this.IsLessThan(x) = this < x
static member Parse(str: string) = { components = [ for s in str.Split('.') do int s ] }
static member Empty = { components = [] }
And if you're wondering why I added IsGreaterThan and IsLessThan - it's because F# implements its greater-than and less-than operators using the .NET IComparable interface, while in C# they would need to be overridden manually, just like how the C# equality operator doesn't automatically call Equals.
You can use the type from C# like this:
var obj1 = ProductVersion.Parse("1.1");
var obj2 = ProductVersion.Parse("1.1");
Anya is live and ready to show you everything. Watch her strip, dance, and perform exclusive shows just for you. Interact in real-time and make your fantasies come true.
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Hi !
NET is in anniversary mode, and in Dev.to blog, someone asked about these samples in F#. It’s been a while since I wrote some F# code, and this is the perfect excuse to start.
Today Post: Access a local camera and show the camera frames in an OpenCV window. In following posts we will have a face detection demo in F#, like this one:
Easy to implement, and also easy to read:
Code…
183.58 Hz – Jupiter’s Orbital Frequency | Alpha Waves #MF030Feel free to SUBSCRIBE now for more such science-based healing frequencies and meditation music t...
This video contains:
Note F# - 183.58 Hz - Jupiter’s Orbital Rife frequency + Isochronic Pulses + Binaural Beats. BPM: 86.05. Jupiter is associated with creativity, growth, success, justice, spirituality.