I am very excited to finally share the first version of my latest type provider, the Mixin Provider!  This post is quite long but you should read it all, this only scratches the surface really. Background   Code Generation in F# Code generation in any language is a double edged sword.  It is an extremely powerful technique used all over the place, often to great effect.  It can also turn into a complete nightmare with millions of often unnecessary and bloated lines of code, hard to find bugs, and hard to m[...]

This is the first part of an intermittent series of articles about calculating Fibonacci numbers in F#. Each article will present a different kind of implementation. Where available, I will also show a corresponding implementation in C#. Step 1: Specification To be truly infite, the sequence has to satisfy three conditions: it has to be lazy, i.e., the numbers are not cached, but continually generated, the type of number must not have an upper boundary, and the algorithm must never cause a stack overflow.[...]

This is the first part of an intermittent series of articles about calculating Fibonacci numbers in F#. Each article will present a different kind of implementation. Where available, I will also show a corresponding implementation in C#. Step 1: Specification To be truly infite, the sequence has to satisfy three conditions: it has to be lazy, i.e., the numbers are not cached, but continually generated, the type of number must not have an upper boundary, and the algorithm must never cause a[...]

A few weeks ago, I came across DiffSharp, an automatic differentiation library in F#. As someone whose calculus skills have always been rather mediocre (thanks Wolfram Alpha!), but who needs to deal with gradients and the like on a regular basis because they are quite useful in machine learning and numerical methods, the project looked pretty interesting: who wouldn’t want exact and efficient calculations of derivatives? So I figured I would take a couple of hours to experiment with the library. This post [...]

Short blog this time. I am introducing Websharper at my employer’s, but while sharing, I had a few startup problems. Probably, this information is already on the internet somewhere, but as it took me a while to solve these issues, I thought I might write a blog about it. Coming from 2.5 A few months ago, I installed Websharper 2.5.128.65. If you install Websharper today, you will download version 3.0.15.92-alpha. Unfortunately this contains breaking changes for your old code if you wrote any [...]