MichaelCurrin

Set up Jekyll environment on macOS

Set p Ruby, Bundler and a project-level Jekyll on macOS Catalina and up

This guide is for macOS Catalina and is based on the Jekyll on macOS doc and my experience.

1. Install dev tools

Use the XCode CLI to install dev tools. Recommended so that you can install native extensions when installing gems.

mfikes

The following works in Clojure:

(keys (filter (comp odd? val) {:a 1 :b 2 :c 3}))

The docstrings for keys and vals don't indicate that you can do this. Is this accidential or intentional?

I vaguely recall Alex Miller indicating at some point that this capability was deemed useful and is intentionally allowed. Yes, this is an appeal to authority, but nevertheless, it makes a fairly convincing argument.

corlaez

Hexagonal Architecture

Conceptualized by Alistair Cockburn. Also known as "Ports and Adapters".

In a nutshell:

Application Driver -> Primary Adapter -> Primary Port -> Use Case -> Secondary Port -> Secondary Adapter -> External System/Side Effect

MartinEesmaa

Note: This is all almost full YouTube ID informations. Original owner goes to AgentOak, modified version by Martin Eesmaa.

See the credits and also special thanks in below.

Before this gist has been forked, AgentOak made original gist back in November 13th 2019 and it was last updated on May 5th 2021.

From now on, this forked gist is maintained by Martin Eesmaa since 17th September 2022. I joined to yt-dlp Discord server on 3rd April 2026 with my Discord username: martineesmaa.

Last updated: 26 September 2026