Posts about tech stuff & insights from authoring software

• Oct 25, 2021

  Testing your JSON API in Ruby with dry-rb

  Using dry-schema and dry-validate to keep endpoint tests readable and maintainable

• Aug 02, 2020

  Using MJML in Elixir & Phoenix

  How to create responsive HTML emails for your Phoenix app with ease

• Jun 24, 2020

  Experiencing The Stroop Effect with a Ruby CLI

  Creating colorful Stroop tests in your terminal

• May 14, 2020

  How to find new maintainers for your open source project

  This open source software helps you build a healthy team of co-maintainers so that no project gets left behind. – The story behind how and why I built Adoptoposs.org.

• May 09, 2020

  The <details> Of a Dropdown

  How to build a beautiful dropdown panel with just HTML and CSS.

• Mar 30, 2020

  Announcing Adoptoposs.org

  I am happy to announce adoptoposs.org – an open source app that connects open source software maintainers with people who want to help keep projects and maintainers healthy in the long term.

• Aug 06, 2019

  File upload to Google Cloud Storage using a Flask API (1 of 3)

  In part 1 we’ll setup a basic Flask app for file uploading to GCS using the filedepot package.

• Aug 06, 2019

  File upload to Google Cloud Storage using a Flask API (2 of 3)

  In part 2 we’ll implement the attachment in the model, the file upload endpoint and some upload tests using an in-memory file storage.

• Aug 06, 2019

  File upload to Google Cloud Storage using a Flask API (3 of 3)

  In part 3 we’ll have a look at how to customize upload directories and allow multiple storages for different attachments.

• Jun 28, 2017

  Handling complex JSON Schemas in Python

  JSON schemas can get confusing if you have to deal with complex data. We’ll look into how to use references to clean up your schemas.

• May 31, 2017

  Testing Your Python API App with JSON Schema

  A nice way to test JSON APIs is verifying a request’s response against a JSON Schema. Here’s how you can cleanly test your Python API app by using the jsonschema package and a custom assertion helper.

• Apr 19, 2017

  Building a City Search with Elixir and Python

  In this “let’s-combine-languages” experiment I show how to build a file-based fulltext search index for cities using Elixir and “Whoosh”, a mature Python package for fulltext indexing.

• Mar 19, 2017

  Why I Don’t Like Switching the Programming Language

  Welcome to the “right side”? Instead of switching, I choose to learn more languages and to never stick to only a single language. If you are tempted to do exactly this – here’s why you better should not settle down.

• Oct 03, 2016

  Creating Machine Learning Systems with JRuby

  All the different programming languages out there seem to be a better fit for machine learning tasks than Ruby, right? On the other hand, Ruby has an excellent reputation for fast prototyping. So, why shouldn’t you prototype machine learning systems with Ruby? Challenge accepted!