Deliver Early; Often.

A nice little script for getting the extract correct DBT installed on your system.

python -m pip install --upgrade pip setuptools wheel --no-cache-dir
python -m pip install --upgrade dbt-core==1.5.3

(Note that you might need to call python3)

My talk at Empex 2023 about Elixir and Machine Learning (specifically about building a recommendation engine using Nx and Scholar). Click on Read More to get the links to related articles and GitHub Repos.

Having recently re-worked by personal blog, I recently stumbled upon Lighthouse. It is geared towards improving SEO, but really it is does a great job at helping create an optimized website in terms of performance, accessibility, and bugs.

To help ensure my pesonal websites, like this blog are optimzed for the web, I have been using Hubspot Website Grader®.

Played around with some Doctor Who sketches

Learning to draw is a slow process, but it is about the journey right!

It has been 2 years since I re-worked my personal website anunknown.dev, and the previous version was on cloud hardware and I have recently been using fly.io for small project development, so I decided for a re-work.

I was experimenting with Hugo as a static site generator for a project. Despite not going forward with that tech (we landed on GitHub pages), here are my notes on getting it up and runnning.

All code is available on GitHub at /work-samples/hugo-and-tailwindcss

Let's get up and running with OCaml and the Ontario Reasearch & Education VCL Cloud. Visit the VCL Cloud and create a new reservation for CentOS7Basev3_EmacsOpam. Once ready, then you can SSH into your devbox and access OCaml.

Let's get up and running with OCaml and VS Code on a Mac.

In a our previous post, we looked at generating a 1password session without requiring user input. Today we will look at generating a one-time (30-minute) token on your local machine and only sharing that with your build servers.

op get item db_password --session $(cat opsession)

Did you know 1Password has a CLI tool? In this article we will write a small script using expect called opsession to better manage secrets in our automation pipeline. Using opsession you can then use 1password op commands like

op get item db_password --session $(opsession)

Without having any user intervention.

I have been looking at using 1Password's CLI tool to better manage secrets on the terminal. 1Password strongly recommends you verify your download.

I decided to write a small shapkgsum script in golang to make that verification easier to automate.

I think it leads to arguing along the lines of hey this isn't a unit test.

I prefer to focus on three qualities of good automated tests

• Fast (or non-slow)
• Sturdy (or non-brittle)
• Isolated (or non-coupled)

Imagine you are building a system to assign unique numbers to each resource that you manage. You want the IDs to be guaranteed unique i.e. no UUIDs. Since these ids are globally unique, each id can only be given out at most once.

Here is a summary of my solution.

def handle_call(:get_id, _from, %{node_id: node_id, counter: counter} = state) do
  <<id::size(64)>> = <<node_id::10, timestamp()::47, counter::7>>
  {:reply, id, %{state | counter: counter + 1}}
end

WebCamp Zagreb 2019 was great. Here's areview of my talk on time travel and git rebase.

Thank you to the organizing committee of Web Camp Zagreb, everything was amazing.

I enjoy reading job listings. There's the "what's trending" angle to see the types of skills that appear to be in bemand. There's the pyschological angle where we as the reader get a peak at what a company values (or doesn't value) when it comes to hiring and employees.

After you install Golang, it's easy to install Packer from source.

mkdir -p ~/src && \
  cd ~/src && \
  git clone https://github.com/hashicorp/packer.git && \
  cd packer && \
  make dev

My talk at Empex 2019 is Live(View). Click on Read More to get the links to related articles and GitHub Repos.

In this article we will connect to our AWS account using SAML, this will allow us to run AWS CLI commands using the same authentication as you use in the browser.

Once complete, you will be able to run

saml2aws login -a 10xdev

An and then have a (configurable) 12 hour session to from the command line.

LiveView for Phoenix on Elixir is definitely scratching an itch in the world of rich client apps, without having to go full-on client-side framework. Here's a list of open source projects, some with online demos and other where you can (easily) run the code locally.

Screenshot	Description	References
	Manipulating a SVG graphic for the 2019 Empex NY conference	Empex SVG Demo <br> Empex SVG Source

Here's a template for answering HackerRank in Elixir. This is based on the Two Character question

defmodule Solution do
  def go() do
    num = input(:int)
    text = input(:string)
    IO.puts("INPUTS #{num} and #{text}")
  end

  def input(:string), do: IO.read(:line) |> String.trim()
  def input(:int), do: input(:string) |> String.to_integer()
end

# Now run your code
Solution.go()

Now go forth and HackerRank!!!

I am getting back into Chef, and the landscape seems to have changed quite a bit in the last 10 years. I am going to documenting the journey in a series of bite sized articles.

Official install docs are here. So follow them, and read along.

This article is based on a very early version of LiveView and is here for historical purposes only.

How can you have your LiveView login form update the user's session across pages?

This article is based on a very early version of LiveView and is no longer the right way to run Custom JS code.

In your LiveView LEEX, you can add a script tag and append a @tick to the id. This will force for the MorphDOM differ to always re-render (aka re-run) that code on the client.

Gives you some legacy code to practice.

The video goes through the Gilded Rose Kata to add the following feature.

We are first teased that the talk was intended to be about "the use of symmetry in coding", as I believe symmetry is a great way to help drive you towards cohesion and aligning the abstractions.

Today we are going explore how to write API clients in the Elixir language. This is a follow-up article to my presentation at OpenCamps 2017.

Want to automate your infrastructure leveraging the awesome Digital Ocean API V2, then the shell is your friend. Here we will learn about how to access the API from the command line using Elixir's Escript tooling.

Not having to manage an email server is awesome, thank you Mailgun. I am currently integrating with Digital Ocean and ran into some documentation confusion with DNS records, especially when trying to configure for a subdomain.

This article combines a few sources to finally get a working solution for sending/receiving emails on Digital Ocean via Mailgun.

There is great power in having your tests always run, all the time when writing code, it stops the minor interruptions.

$ mix test.watch

Running tests...
..................................................
..................................................
....
Finished in 0.04 seconds (0.04s on load, 0.00s on tests)
104 tests, 0 failures
Randomized with seed 386800

Of course you don't know anyone that actually stores user passwords in plaintext, or database passwords directly in a repository, so this is more for those theoretical developers to provide them with just a little bit more security; without adding much more complexity.

# Encrypt a password and store it in pwd
iex> pwd = Safetybox.encrypt("helloworld")
"fc5e038d38a57032085441e7fe7010b0"

# Later on, you can validate the user provided password
# against the encrypted stored password
# Oopses, not the same
iex> Safetybox.is_decrypted("goodbyeworld", pwd)
false

# Ok, validated!
iex> Safetybox.is_decrypted("helloworld", pwd)
true

An exploration of the Go language (golang) to build a simple webcrawler, all code is available on Github. This application was written as an exploration of the language and demonstration of the various features of the language; it is not feature complete but should be complex enough to provide some examples of using Go's various concurrent features, tied together in a simple command line and web interface.