Jonathan Palardy's blog

I have read many books in 2025; let’s forget most and talk about the good ones.

A Quick Why I won’t try to sell AWK in this post, I’ve done it before.

Background It wasn’t my first time standing over a lasagna pan, trying to eyeball how to cut it into 6 equal portions.

Surrounding text in Vim/Neovim is not strictly complicated, but finding a good workflow is not immediately obvious either.

What is LocalSend?

Problem wc -l is pretty good at counting lines, it’s what most people use # man cat | wc -l 71 Except that it collapses all your data to a single number.

Previously, in Using recon_trace with Elixir, I had laid out a foundation for using :recon_trace specifically with Elixir.

I have read many books in 2024; let’s forget most and talk about the good ones.

While most macOS users know how to take and use screenshots, I would argue there are 2 ways to improve the experience.

Background Recently, I’ve been experimenting with WezTerm and Neovim.

Most people know they can add functions to the shell, but often limit themselves to their dotfiles.

The Template Itself If you need to copy-paste: for {name, params} <- %{ "test name 1" => %{}, "test name 2" => %{}, "test name 3" => %{} } do @tag params: params test name, %{params: params} do # use params.???

Situation If you’ve been stuck in a terminal where ctrl-c didn’t seem to work > bash sig-catcher loop 1 loop 2 loop 3 ^C loop 4 loop 5 ^C^C^C^C loop 6 loop 7 loop 8 # it keeps going ...

I wrote before about psql Tips and Tricks.

(2025-02-16 update: How to get Elixir logging with recon_trace) This year, I finally got around to learn recon_trace.

Background Over Christmas, I decided that it was a good time to try the Gleam track on Exercism.

I have read many books in 2023; let’s forget most and talk about the good ones.

Quick links: better defaults variables temporary tables Why psql?

What is this?

What is entr?

I mentioned in Reduce is Not the Answer how: reduce is fairly low-level reduce doesn’t capture “intent” Very loosely, I believe that “loop constructs” fall somewhere on this abstraction scale: Exact placement is subjective; this is a starting point.

TLDR The reduce function: can do anything, and often does… fails to communicate intent compared to its alternatives reduce is the for-loop of functional programming… What is reduce?

Spreadsheets aren’t my favorite things, but I’ve spent a decent amount of time using them.

A lot of people don’t know that join exists, or what it does 🤔 I mean the join command that’s already on your computer and ready to go: # BSD (macOS) > join usage: join [-a fileno | -v fileno ] [-e string] [-1 field] [-2 field] [-o list] [-t c…

What is Livebook?

I have read many books in 2022; let’s forget most and talk about the good ones.

Do you babysit long-running applications?

tl;dr The answer is on stackoverflow: if (RectA.Left < RectB.Right && RectA.Right > RectB.Left && RectA.Top > RectB.Bottom && RectA.Bottom < RectB.Top) which is correct but not especially obvious.

Not just JavaScript… While this post uses process.env – JavaScript, TypeScript, and node – to make a point, none of the problems listed are JavaScript-specific.

(Disclaimer: I wrote vim-slime) Installing a vim plugin: probably not fun… Maybe you’ve heard about vim-slime, thought it was cool … but you weren’t sure what you were getting yourself into 🤔 That’s understandable … I feel the same about every vim plugin:…

It started with a conversation with my parents.

I recently stumbled on something that I thought would be easy: parsing and validating dates in Awk.

Help me help you When I’m at someone’s desks, in person or virtually, it drives me crazy to see the heroics of typing everything in a REPL… Let alone trying to manually fix broken code on in a REPL… Or losing their work when exiting the REPL, and trying to

(when I switched my shell to zsh, I mentioned that I would try fish and report back: this is it.)

I have read many books in 2021; let’s forget most and talk about the good ones.

How do you read non-JSON inputs with jq?

Azerbaijanian Translation, thanks to Amir.

Short version: module names and file names don’t have to match!

I had not tried to write my own mix tasks until this week.

Over the years, I wrote a bunch of quick JavaScript apps with code similar to: document.addEventListener("keydown", ev => { // ESC if (ev.keyCode === 27) { // ... } // Enter if (ev.keyCode === 13) { // ... } // ... but I found out…

Spanish Translation, thanks to Laura.

For years, I’ve been solving the wrong problem: how do I cd.. efficiently?

Switching off the git master branch was easier than I expected!

I have read many books in 2020; let’s forget most and talk about the good ones.

Imagine a simple Go project: . ├── go.mod ├── main.go └── stats └── avg.go No tricks: click to enlarge You are about to create stats/avg_test.go: what is the right package name declaration for that file?

Spanish Translation, thanks to Laura.

Spanish Translation, thanks to Laura.

I had heard about Zsh before: I thought it had many good things going for itself.

Problem Quick: why is this JSON not valid?

When dealing with directories in bash, some obvious things seem like too much work… Here are 2 quick tips for easier handling of directories in bash. unix-filename-rubout When dealing with long directory names, you can usually complete forward by pressing…