AlexanderPavlenko

Arel Cheatsheet on Steroids

A (more) complete cheatsheet for Arel, including NamedFunction functions, raw SQL and window functions.

posts = Arel::Table.new(:posts)
posts = Post.arel_table # ActiveRecord

Code	Terminology	Kind	Usage	Line
$scr	scripting additions folder	Property of class: domain	System Events : Disk-Folder-File Suite	1
%doc	music folder	Property of class: user domain object	System Events : Disk-Folder-File Suite	2
µdoc	music folder	Enumeration	Standard Additions : File Commands	3
ƒhlp	help	Enumeration	Standard Additions : File Commands	4
ƒhlp	help folder	Enumeration	Standard Additions : File Commands	5
ƒlib	shared libraries	Enumeration	Standard Additions : File Commands	6
ƒlib	shared libraries folder	Enumeration	Standard Additions : File Commands	7
ƒmod	modem scripts	Enumeration	Standard Additions : File Commands	8
ƒmod	modem scripts folder	Enumeration	Standard Additions : File Commands	9

Rails.application.eager_load!
ActiveRecord::Base.subclasses(&:name)

variable = _

In order to tunnel all iOS Internet traffic using SSH:

Get this app: SSHTunnel
Create a tunnel with type "Dynamic" & connect.
Click on the config.pac file to copy it to a clipboard.
Go to Settings > General > Network > Wi-Fi and tap the blue arrow on the right side of the entry for your network. Scroll down to the "Proxy" section and tap "Auto". Paste URL to a pac file from a clipboard.
Have a FUN!

	#!/usr/bin/env -S bash -c "docker run -p 8080:8080 -it --rm \$(docker build --progress plain -f \$0 . 2>&1 \| tee /dev/stderr \| grep -oP 'sha256:[0-9a-f]*')"

	# syntax = docker/dockerfile:1.4.0

	FROM node:20

	WORKDIR /root

	RUN npm install sqlite3

	# Stick this in your home directory and point your Global Git config at it by running:
	#
	# $ git config --global core.attributesfile ~/.gitattributes
	#
	# See https://tekin.co.uk/2020/10/better-git-diff-output-for-ruby-python-elixir-and-more for more details

	*.c diff=cpp
	*.h diff=cpp
	*.c++ diff=cpp
	*.h++ diff=cpp

	import numpy as np
	from scipy.io import wavfile
	import librosa

	import renderman as rm

	SAMPLE_RATE = 44100
	BUFFER_SIZE = 512
	REVERB_PLUGIN = "C:/path/to/reverb.dll"
	SYNTH_PLUGIN = "C:/path/to/synth.dll"

	<?xml version="1.0" encoding="UTF-8"?>
	<kml xmlns="http://www.opengis.net/kml/2.2">
	<Document>
	<name>Red Bull X-Alps 2019 Route</name>
	<snippet>https://www.redbullxalps.com/ Created by twpayne@gmail.com</snippet>
	<open>1</open>
	<Folder>
	<name>Route</name>
	<Placemark>
	<LineString>

	Add the following in .zshrc:

	...
	plugins=(osx git zsh-autosuggestions zsh-syntax-highlighting zsh-nvm docker kubectl)
	...

	### Fix slowness of pastes with zsh-syntax-highlighting.zsh
	pasteinit() {
	OLD_SELF_INSERT=${${(s.:.)widgets[self-insert]}[2,3]}
	zle -N self-insert url-quote-magic # I wonder if you'd need `.url-quote-magic`?

	#!/bin/bash

	gdb -p "$1" -batch -ex 'set {short}$rip = 0x050f' -ex 'set $rax=231' -ex 'set $rdi=0' -ex 'cont'