I’m a self taught programmer currently working at a national broadcasting corporation. My nickname is simendsjo most places online, and you can reach me using one of the links below. I also use sijo in places where simendsjo is tediously long, e.g. in programming languages without namespaces where it’s repeated a lot.

• Email: homepage@simendsjo.me
• Mastodon (Microblogging): @simendsjo@fosstodon.org
• GitHub (Source Code Repository): github.com/simendsjo
• Codeberg (Source Code Repository): codeberg/simendsjo
• sourcehut (Source Code Repository): git.sr.ht/~simendsjo
• LinkedIn (Professional Network): linkedin.com/in/simendsjo/

My very limited publically available work:

(library, 2024) sijo-version - Construct semantic version strings in Common Lisp

Easily construct version with sensible defaults.

(library, 2024) sijo-doctest - Documentation tests in Common Lisp

Executing tests written in documentation of functions, macros and variables.

(library, 2023) sijo-ctx - Switch between context in Emacs

Quickly switch between different clients, email providers, etc.

(library, 2021) EmacsDotNet - Leverage the .NET ecosystem from Emacs

Calling dotnet code from emacs, returning the result.

(article, 2020) A Functional Architecture Demo (main repo/article), A Functional Architecture Demo (Functional Christmas)

Two demo applications

(article, 2019) Open ≠ Free ≠ Gratis (Open Source Christmas)

Software licenses

(article, 2019) Map and bind - A hidden functional concept in C# (Functional Christmas)

FP in C#

(article, 2019) Iteration without for, foreach or while (Functional Christmas)

Recursion and fold

(article, 2019) The F of FP (Functional Christmas)

Functions and composition

(article, 2017) F# introduction for my coworkers

F# tutorial

(game, 2013) MeteorApocalypse

Small game for Android created with Monogame.

(library, 2012) mysql-native

MySQL connector for the D programming language. Refactored from prototype to production code in 2012, ref commits. I’m not a current maintainer nor a user.

RSS feed

• (2025-02-04) Homepage of simendsjo
• blog/
  • (2024-08-23) Improving my org-capture workflow with shortcuts for moving from inbox to todo
  • (2024-08-04) Background and introduction to the immutable, deterministic data storage in sijo-ion
  • (2024-07-13) Initial Guix Home setup
  • (2024-06-28) Setting up GNU Guix
  • (2024-05-13) Migrating my systems from org-babel to chezmoi
  • (2024-05-13) Using Hyperbole Global Buttons to launch Windows tools
  • (2024-03-14) I broke production and could have noticed it was going to happen one week earlier
  • (2023-07-28) Sharing an org-roam database between different contexts
  • (2023-06-29) Add simple org-attach support for org-publish with a post-processing function
  • (2022-08-15) A quick peek at lisp macros
  • (2022-08-09) A simple diff for date/time duration changes
  • (2022-08-08) Mutating functions and effects in Common Lisp
  • (2019-11-21) Gather, Aggregate, Decide, Act
• fsharp-intro/
  • (2017-10-16) F# introduction for my coworkers