Takuo Watanabe wtakuo

The introduction to Reactive Programming you've been missing

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

	;;- --scheme--
	;;; rabbit compiler

	;;- This is the source code to the RABBIT Scheme compiler, by Guy Steele,
	;;- taken from the Indiana Scheme repository and annotated by me, Darius
	;;- Bacon. I converted it from all-uppercase to all-lowercase and
	;;- reindented it with Emacs for better readability. I've added the
	;;- comments starting with either ;- or ;*. Other comments are by Steele.
	;;- The ;- comments were things I'd figured out, while ;* denoted things
	;;- for me to look into. (Sometimes I didn't bother to type in the answer

	echo "update and upgrade apt"
	sudo apt-get update
	echo "y" \| sudo apt-get upgrade

	echo "force audio out to analog"
	# amixer cset numid=3 N where the N parameter means the following: 0=auto, 1=analog, 2=hdmi
	sudo amixer cset numid=3 1
	echo "set volume to maximum"
	sudo amixer cset numid=1 -- 100%

	#!/bin/sh

	###
	# SOME COMMANDS WILL NOT WORK ON macOS (Sierra or newer)
	# For Sierra or newer, see https://github.com/mathiasbynens/dotfiles/blob/master/.macos
	###

	# Alot of these configs have been taken from the various places
	# on the web, most from here
	# https://github.com/mathiasbynens/dotfiles/blob/5b3c8418ed42d93af2e647dc9d122f25cc034871/.osx