Matthias Nehlsen

Software, Data and Stuff

Talk Transcripts: Rich Hickey, David Nolen & more

TL;DR: I wanted to study the content of some talks in written form but there were no transcripts available. However, I believe that the valuable and relevant content of these talks should be accessible to everyone, including those for whom ‘sit back and listen’ might not be the most viable option. To make that a reality, I had transcripts made. So far, I have compiled five talks by Rich Hickey, one talk by David Nolen and another talk by Guy Steele. The transcripts are available on GitHub.

Building a System in #Clojure 2 - Transducers

TL;DR: This article covers the usage of Transducers in Clojure, spiced up with some core.async. Here’s an animation that shows the information flow of the composed transducer that we are going to build in this article:

If any of that is of interest to you at all (or if you want to see more animations like the one above), you may want to read the following article.

Building a System in #Clojure 1 - Overview

This is the first of n articles about building systems in Clojure. Clojure is a beautiful language and I have been fascinated from the first moment I laid eyes on it last summer. However, what remained a mystery to me for most of the time was how to build more complex systems. I started researching the options that would allow me to structure an arbitrarily complex application in a way that is easy to understand and maintain. Here is what I found.

Weekly Update: PageSpeed Insights, optimizing Octopress & more Clojure

In this weekly update, I will discuss how I turned the load times for this Octopress-powered blog from terrible to pretty decent. In PageSpeed Insights numbers: before the optimization 58/100 for mobile and 77/100 for desktop; after the optimization 94/100 for mobile and 96/100 for desktop. More concretely: on a lousy mobile connection, the load time improved from 32 seconds to a mere 5 seconds. Now we’re talking. You would presumably not have waited for 32 seconds, and neither would I. Also, I have a status update on the Clojure version of BirdWatch.

Weekly Update: Pomodoro, all-Clojure BirdWatch, Income

In this weekly update, I will be talking about why I started this blog in the first place, Pomodoro time management, and the new Clojure and ClojureScript version of my BirdWatch application. Again there is a live version, this time subscribing to all tweets containing the term Ferguson. Also, the results are out for the first month of blog monetization through affiliate links.

Weekly Update: git vs brain fart, Octopress, Sony A7, my audio setup

In this weekly update, I will show you how git helped me alleviate the disastrous consequences of a brain fart. I will also share my experiences with Octopress. You will learn what helps me feel better, day in and day out. Then, I’ll talk about some changes regarding the mailing list for this blog. And last, there’ll be reviews on my audio setup for a combined work / chill area and on the Sony A7 full frame camera.