Don Chea donaldducky

Prelude

I. Preface and Motivation

This guide was written because I don't particularly enjoy deploying Phoenix (or Elixir for that matter) applications. It's not easy. Primarily, I don't have a lot of money to spend on a nice, fancy VPS so compiling my Phoenix apps on my VPS often isn't an option. For that, we have Distillery releases. However, that requires me to either have a separate server for staging to use as a build server, or to keep a particular version of Erlang installed on my VPS, neither of which sound like great options to me and they all have the possibilities of version mismatches with ERTS. In addition to all this, theres a whole lot of configuration which needs to be done to setup a Phoenix app for deployment, and it's hard to remember.

For that reason, I wanted to use Docker so that all of my deployments would be automated and reproducable. In addition, Docker would allow me to have reproducable builds for my releases. I could build my releases on any machine that I wanted in a contai

Linting your code, the vanilla way

You may want a linter plugin to lint your code in Vim but you probably don't need it. At least try the built-in way before jumping on the plugin bandwagon.

Defining `makeprg`

autocmd FileType <filetype> setlocal makeprg=<external command>

This autocommand tells Vim to use <external command> when invoking :make % in a <filetype> buffer. You can add as many similar lines as needed for other languages.

Syndrom: FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - process out of memory

When?

Doing an npm search whatever, npm tries to make indexing works.

It returns the "syndrom" message and as I'm using NVM a path like below referencing how npm has been called.

...

Conventions

A = [xA, yA] is a point on the 2D plane. Same for B, C, ...
lengths are in any unit (ex: pixels)
code snippets are in JavaScript

Degrees to radians

angleRad = angleDeg * Math.PI / 180;

Folder Structure

Please note

While this gist has been shared and followed for years, I regret not giving more background. It was originally a gist for the engineering org I was in, not a "general suggestion" for any React app.

Typically I avoid folders altogether. Heck, I even avoid new files. If I can build an app with one 2000 line file I will. New files and folders are a pain.

Screencapture and animated gifs

I say "animated gif" but in reality I think it's irresponsible to be serving "real" GIF files to people now. You should be serving gfy's, gifv's, webm, mp4s, whatever. They're a fraction of the filesize making it easier for you to deliver high fidelity, full color animation very quickly, especially on bad mobile connections. (But I suppose if you're just doing this for small audiences (like bug reporting), then LICEcap is a good solution).

Capturing (Easy)

Launch quicktime player
do Screen recording

	defmodule Mix.Tasks.InspectAggregate do
	use Mix.Task

	alias MyApp.EventStore

	def run(args) do
	Application.ensure_all_started(:eventstore)
	_ = EventStore.start_link()

	{opts, _} =

	#include <time.h> // Robert Nystrom
	#include <stdio.h> // @munificentbob
	#include <stdlib.h> // for Ginny
	#define r return // 2008-2019
	#define l(a, b, c, d) for (i y=a;y\
	<b; y++) for (int x = c; x < d; x++)
	typedef int i;const i H=40;const i W
	=80;i m[40][80];i g(i x){r rand()%x;
	}void cave(i s){i w=g(10)+5;i h=g(6)
	+3;i t=g(W-w-2)+1;i u=g(H-h-2)+1;l(u

	# Create Q

	ENV=dev1
	Qname=tom-test1
	Q1=$(aws sqs create-queue --queue-name "$ENV-$Qname" --output text)
	echo $Q1


	aws sqs send-message --queue-url $Q1 --message-body "Test message 1 from Tom"

	# Keep in mind that when asking for a `return` after another, only the first one will be output.
	# This example is meant as a simple starting point, to show how to get the information in the simplest available way.

	# Google Chrome
	tell application "Google Chrome" to return URL of active tab of front window
	tell application "Google Chrome" to return title of active tab of front window
	# Google Chrome Canary
	tell application "Google Chrome Canary" to return URL of active tab of front window
	tell application "Google Chrome Canary" to return title of active tab of front window
	# Chromium