chendo chendo

Product engineer. Performance enthusiast. Creator of Shortcat.app

chendo / raven.rb

Last active January 11, 2022 11:49

Pulls energy usage from a Rainforest Automation RAVEn USB stick and publishes into a MQTT server to be consumed by Home Assistant

	# License: Public domain
	# Depends on https://github.com/nonspecialist/pyraven being installed and accessible at `raven`

	require 'bundler/inline'

	gemfile do
	source 'https://rubygems.org'
	gem 'mqtt'
	end

chendo / _document.js

Last active June 2, 2022 02:54

Server side rendering (SSR) in Next.js with styled-components, styled-jsx, and emotion.

	import Document, { Head, Main, NextScript } from 'next/document'

	import { renderToString } from 'react-dom/server'
	import { extractCritical } from 'emotion-server'
	import { ServerStyleSheet } from 'styled-components'
	import flush from 'styled-jsx/server'

	export default class MyDocument extends Document {
	static async getInitialProps(ctx) {
	const styledComponentsSheet = new ServerStyleSheet()

chendo / _document.js

Created April 16, 2019 12:43

Critical CSS support for both styled-components and Emotion in Next.js

	import Document, { Head, Main, NextScript } from 'next/document'
	import { ServerStyleSheet } from 'styled-components'
	import { renderToString } from 'react-dom/server'
	import { extractCritical } from 'emotion-server'

	export default class MyDocument extends Document {
	static async getInitialProps(ctx) {
	const sheet = new ServerStyleSheet();
	const originalRenderPage = ctx.renderPage

chendo / bootstrap.sh

Created August 8, 2018 09:47

	#!/bin/bash

	if [ -e /dev/nvme1n1 ]
	then
	sudo /etc/init.d/docker stop
	sudo mkfs.ext4 /dev/nvme1n1
	sudo mount /dev/nvme1n1 /var/lib/docker
	sudo /etc/init.d/docker start
	fi

chendo / go_interactive.rb

Created July 10, 2018 03:23

go_interactive lets you interactively write specs

	class GoInteractive
	def self.start(args, *kwargs)
	@init \|\|= begin
	Pry.hooks.add_hook(:before_eval, "go_interactive") do \|code, pry\|
	current.before_eval(code, pry)
	end

	Pry.hooks.add_hook(:after_eval, "go_interactive") do \|result, pry\|
	current.after_eval(result, pry)
	end

chendo / stroke-svg-image.js

Created February 23, 2018 01:40

chendo / points.json

Created July 20, 2017 22:19

ARKit positional data for a few laps around a go kart track - 14213 data points

This file has been truncated, but you can view the full file.

chendo / gnatsd_bench.go

Last active August 29, 2015 14:06

chendo / repro.rb

Created April 3, 2014 01:45

	require 'celluloid/io'
	require 'socket'

	class Server
	include Celluloid::IO

	def run
	@tcp = TCPServer.new('0.0.0.0', 31337)
	loop do
	Connection.new_link(@tcp.accept).async.run

chendo / required_keyword_arguments.rb

Created March 28, 2014 03:19

My take on required keyword arguments in Ruby 2.0. This solution throws a nice backtrace, but still requires a name to be passed in.

	module RequiredKeywordArguments
	def required!(name)
	backtrace = caller_locations(1).map { \|c\| c.to_s }
	ex = ArgumentError.new("Missing required keyword argument '#{name}'")
	ex.set_backtrace(backtrace)
	raise ex
	end
	end

	class Foo