mdang

Ruby on Rails Cheatsheet

Architecture

Create a new application

Install the Rails gem if you haven't done so before

rondy

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

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Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?

michalmuskala

Erlang/Elixir syntax reference

This reference is aimed at allowing you to comfortably read erlang documentation and consume terms printed in Erlang format. It does not aim at allowing you to write Erlang code.

This is a modified version of http://elixir-lang.org/crash-course.html

Data types

Erlang and Elixir have the same data types for the most part, but there are a number of differences.

ruanbekker

My Elasticsearch cheatsheet with example usage via rest api (still a work-in-progress)

Shortlinks:

• Cluster Health
  • Index Level
  • Shard Level
• Nodes Overview
• Indices Overview
• Cluster Maintenance

mrmartineau

Stimulus cheatsheet

• Website: https://stimulusjs.org/
• GitHub repo: https://github.com/stimulusjs/stimulus
• Handbook: https://stimulusjs.org/handbook/introduction
• Discourse: https://discourse.stimulusjs.org/

Lifecycle callbacks

• initialize: once, when the controller is first instantiated
• connect: anytime the controller is connected to the DOM

koi8-r

• Creating Elixir libraries as OTP applications
• hub: elixirphoenix
• hub: elixir
• Elixir Killer Tips
• Elixir recipes
• http://elixirschool.com/
• Elixir quick_reference
• Elixir: начинаем работу с Plug
• Минимальный HTTP API Endpoint используя Elixir
• Создание движка для блога с помощью Phoenix и Elixir / Часть 1. Вступление

sethbergman

#!/usr/bin/env bash

set -e

# https://docs.docker.com/engine/install/ubuntu/

sudo apt-get -y install apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add - 2>/dev/null
sudo echo "deb [arch=amd64] https://download.docker.com/linux/$(lsb_release -is | tr '[:upper:]' '[:lower:]') bionic stable" > /etc/apt/sources.list.d/docker.list
sudo apt-get -y update

thinkgarden

Various ways to remove local Git changes

how-do-i-discard-unstaged-changes-in-git

If you want to revert changes made to your working copy, do this

git checkout .

bradtraversy

Docker Commands, Help & Tips

Show commands & management commands

$ docker

Docker version info

nicbet

# ---- Build Stage ----
FROM erlang:22-alpine AS app_builder

# Set environment variables for building the application
ENV MIX_ENV=prod \
    TEST=1 \
    LANG=C.UTF-8

# Fetch the latest version of Elixir (once the 1.9 docker image is available you won't have to do this)
RUN set -xe \