Symmetrical yfkhar

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

Note: This is the guide for v 2.x.

For the v3, please follow this url: https://blog.csdn.net/sam_shan/article/details/80585240 Thanks @liy-cn for contributing.

For the v6, please follow the comment below: https://gist.github.com/trandaison/40b1d83618ae8e3d2da59df8c395093a?permalink_comment_id=5079514#gistcomment-5079514

StarUML

Download: StarUML.io

Working with git remotes on Heroku

Generally, you will add a git remote for your Heroku app during the Heroku app creation process, i.e. heroku create. However, if you are working on an existing app and want to add git remotes to enable manual deploys, the following commands may be useful.

Adding a new remote

Add a remote for your Staging app and deploy

Note that on Heroku, you must always use master as the destination branch on the remote. If you want to deploy a different branch, you can use the syntax local_branch:destination_branch seen below (in this example, we push the local staging branch to the master branch on heroku.

$ git remote add staging https://git.heroku.com/staging-app.git

tmux Cheat Sheet

Table of Contents

General Usage
Shortcuts
Commands
Scripting tmux
Configuring tmux

If you're storing anything in MySQL databases that you do not want to lose, it is very important to make regular backups of your data to protect it from loss. This tutorial will show you two easy ways to backup and restore the data in your MySQL database. You can also use this process to move your data to a new web server.

Back up From the Command Line (using mysqldump)

Back up your MySQL Database with Compress

Restoring your MySQL Database

Backing Up and Restoring using PHPMyAdmin

Vanilla JavaScript Quick Reference / Cheatsheet

Just migrated it from Codepen.io to markdown. Credit goes to David Conner.

Working with DOM	Working with JS	Working With Functions
Accessing Dom Elements	Add/Remove Array Item	Add Default Arguments to Function
Grab Children/Parent Node(s)	Add/Remove Object Properties	Throttle/Debounce Functions
Create DOM Elements	Conditionals

	# config/initializers/log_response_time.rb

	event_logger = ::Logger.new("#{Rails.root}/log/response_times.log")
	event_logger.formatter = proc { \|_severity, _datetime, _progname, msg\|
	"#{msg}\n"
	}

	ActiveSupport::Notifications.subscribe('process_action.action_controller') do \|_, started, finished, _, stats\|
	request_time = (finished - started) * 1000
	controller = stats[:controller][0..-11].underscore

	#target Illustrator
	/*
	Revision-1
	Author: Shivendra Agarwal
	Year: 2017
	Title: Script to scale-up artwork and artboard above 15 Mpixel
	*/

	if ( app.documents.length > 0 )
	alert("ERROR: \n Close all documents before running this script." );

	### 1: Drop invalid packets ###
	/sbin/iptables -t mangle -A PREROUTING -m conntrack --ctstate INVALID -j DROP

	### 2: Drop TCP packets that are new and are not SYN ###
	/sbin/iptables -t mangle -A PREROUTING -p tcp ! --syn -m conntrack --ctstate NEW -j DROP

	### 3: Drop SYN packets with suspicious MSS value ###
	/sbin/iptables -t mangle -A PREROUTING -p tcp -m conntrack --ctstate NEW -m tcpmss ! --mss 536:65535 -j DROP

	### 4: Block packets with bogus TCP flags ###

	.git
	.gitignore
	README.md

	#
	# OS X
	#
	.DS_Store
	.AppleDouble
	.LSOverride