Back in the days when I was developing in Ruby most of my waking hours rbenv was a real life saver. But looking at what it does, it initially felt awkward how it "wrapped" the cd command. You could argue that the Ruby community are no strangers to guerrilla patching. But it felt less awkward when I learned that in my zsh it uses hooks instead of guerrilla patching to achieve the same goal: React on changing the directory.

In the meantime I tried a couple of things with zsh hooks to optimize work flows and what not, but...

Frustration with slow and manual processes is probably my number one motivator to discover new tooling. Having lately worked with Swagger on a Json API I found myself in need of a tool to work with Json on the command line.

I tried a couple and just when I was about to make the decision that I want to try them all to find the best one my search was cut short when I tried jq. On the web site it claims: jq is like sed for JSON data. And come to think of it what would we do without...

TL;DR Use codegraph to visualize dependencies within a Clojure file. Codegraph applied to itself will for example generate this graph:

example codegraph graph
example codegraph graph

Here is how it works.

The other day I wished I had a visualization of the dependencies in a piece of ClojureScript code that over the course of the year has gotten a bit unwieldy. I did some thinking and some codeing and it turns out it's quite easy. Here are some of the highlights in code & images, but mostly code.

Reading a string and have it evaluates in Clojure is done with read-string....

Module Hot Loading enables a super efficient workflow without the pain of manual reloading of your web application. What do I mean by that? Well, the usual web developer cycle is:

  1. Write code
  2. Save code
  3. Switch to Browser
  4. Hit Reload
  5. See what happens
  6. Switch back to Editor

Half those steps (3, 4 and 6) are manual and very repetitive if you want to have an incremental development experience. They can be automated completely.

There are some frameworks that support Module hot-loading by now. ClojureScript and Elm probably were the first languages to support that paradigm, but it's possible in JavaScript as well, by now.

This is a demo...

If you want to use RiotJS Custom Tags within a <table>, you might have stumbled upon something that looks like a bug. If you nest Custom Tags within a <table> element, they will not render within said element, but outside of it. Let me clarify with an example and how to fix it.

If you have code that nests elements like this:

<todoList>
    <table>
      <tbody>
        <todo each="{ allTodos() }">
     ...

Update: This is a re-post of an older blog post of mine. Originally it was posted on my personal blog. I'm deprecating my personal blog in favor of this 200OK blog.

You can use templates for different types of capture items, and for different target locations.

The following code sets up three capture templates – for todos, media urls and code snippets (lines 4-7).

%? sets the exit point for the template, %^g prompts for a tag, %^{language} prompts for the language of the snippet and the remainder is boilerplate to create an org-mode entry (*) and an...

Update: This is a re-post of an older blog post of mine. Originally it was posted on my personal blog where it has >30 comments and >20'000 views over the last years. I'm deprecating my personal blog in favor of this 200OK blog.

Spoiler: This post is primarily gonna be an excerpt of my bookmarks collection. That’s because more intelligent men than me have already written great articles on the topic of how to become a great Python programmer.

I will focus on four primary topics: Functional programming, performance, testing and code guidelines. When those four aspects merge in one programmer,...

Some time ago, a dear friend of mine came up to me and asked about the Python module binascii – particularly about the methods hexlify() and unhexlify(). Since he asked for it, I’m going to share my answer publicly with you.

First of all, I’m defining the used nomenclature:

...

Update: This is a re-post of an older blog post of mine. Originally it was posted on my personal blog where it has >130 comments and ~ 250'000 views over the last years. I'm deprecating my personal blog in favor of this 200OK blog.

Finding the perfect IDE for Python isn’t an easy feat. There are a great many to chose from, but even though some of them offer really nifty features, I can’t help myself but feel attracted to VIM anyway. I feel that no IDE accomplishes the task of giving the comfort of complete power over the code...