Category: Programming

Introduction

If you’ve read the previous Informedica post on F# Interactive (FSI) and why it’s a powerful tool in your development toolbox, then this post takes the next step. The first post introduced what FSI is and why it’s useful. This post shows how you can harness it practically on a brown-field project such as GenPRES. 

Most of us don’t work in green-field environments where code is written fresh and clean. Instead, we struggle with brown-field codebases—systems that have grown over years, accreted complexity, and become mission-critical. Changing code in these environments is often intimidating: any modification risks unexpected consequences somewhere else in the system.

This is exactly where F# Interactive (FSI) becomes a superpower.

Continue reading “Taming the Brown Field with F#: Interactive Refactoring for Mature Codebases”

F# Interactive (FSI) has fundamentally changed how I approach software development. Rather than the traditional edit-compile-run cycle, FSI enables a direct, conversational/interactive approach to coding that eliminates friction and accelerates development. This post explores the practical advantages I’ve discovered through years of FSI-first development using F# script files.

Continue reading “Working with F# Interactive (FSI): A Development Workflow”

I feel that a lot of time Copilot and I do not agree on F# code. Recently, I had the following discussion about this code file:

Continue reading “My beef with Copilot”

Just recently, I was watching the fsharpConf2023. There was a very interesting talk from the CEO of Darklang, Paul Biggar. Darklang was originally created using OCaml. Later on they decided to switch to F# and the talk is about their experience with F#. Paul Biggar specifically discussed the goods and the bads of F# as a language to use in production. One of the comments that stood out to me was the compilation speed of F#.

Continue reading “F# Compilation Speed”

I have been looking for a best practice to create a major single page application using the excellent Feliz library. I also heavily borrowed ideas from a book by the author of Feliz, Zaid Ajaj. The application in mind is intended to be the Dutch National Pediatric Emergency app used for acute interventions in pediatric medical emergencies. The main purpose of the application is to provide all calculations necessary based on age and weight of the patient.

Continue reading “Feliz React components”