Dr. Kat katychuang

Optics By Example Cheat Sheets

The following are appendices from Optics By Example, a comprehensive guide to optics from beginner to advanced! If you like the content below, there's plenty more where that came from; pick up the book!

Operators
Composition Guide
Substitution Guide
Optical Constarints and Types

Operator Cheat Sheet

EMOJI CHEAT SHEET

Emoji emoticons listed on this page are supported on Campfire, GitHub, Basecamp, Redbooth, Trac, Flowdock, Sprint.ly, Kandan, Textbox.io, Kippt, Redmine, JabbR, Trello, Hall, plug.dj, Qiita, Zendesk, Ruby China, Grove, Idobata, NodeBB Forums, Slack, Streamup, OrganisedMinds, Hackpad, Cryptbin, Kato, Reportedly, Cheerful Ghost, IRCCloud, Dashcube, MyVideoGameList, Subrosa, Sococo, Quip, And Bang, Bonusly, Discourse, Ello, and Twemoji Awesome. However some of the emoji codes are not super easy to remember, so here is a little cheat sheet. ✈ Got flash enabled? Click the emoji code and it will be copied to your clipboard.

People

😄

What kind of iteration to use when in JavaScript

For loops

for (var i = 0; i < array.length; i++) {
}

Code has to run in old versions of IE.

list of instructive dance videos

dougie - https://www.youtube.com/watch?v=WtYSZawpSQI | https://www.youtube.com/watch?v=9PYYaMJ6SfU
cat daddy - https://www.youtube.com/watch?v=vPu4BbB4StI
crazy legs - https://www.youtube.com/watch?v=F3I7tgojpEA
kick ball change - https://www.youtube.com/watch?v=XRM4vv_GC9U
run-it dance - https://www.youtube.com/watch?v=C5X84NBjVgk
treadmill dance aerobits - https://www.youtube.com/watch?v=SLMWaU-rLJQ

#How I built an audio book reader for my nearly blind grandfather

Tweet this - Follow me

Last year, when visiting my family back home in Holland, I also stopped by my grand-parents. My grand-father, now 93 years old, had always been a very active man. However, during the presceding couple of months, he'd gone almost completely blind and now spent his days sitting in a chair. Trying to think of something for him to do, I suggested he try out audio books. After finally convincing him -- he said audio books were for sad old people -- that listening to a well performed recording is actually a wonderful experience, I realized the problem of this idea.

####The problem with audio devices and the newly blind. After my first impulse to jump up and go buy him an

How to install GHC from source + latest stack + cabal + cabal-install on ubuntu

for your convinience this instuction is available as:
gist
git repo

preferred way install stack than install ghc

stack (package manager and build tool, preferrered way to manage dependencies)

# settings

After two months of off-and-on troubleshooting an issue that was preventing me from updating Cabal to 1.18.* cf. network-2.4.2.2 failed during the configure step #122, @katychuang helped resolve the issue at Hac NYC through a process which I'll document here.

	# data can be found at https://data.sfgov.org/api/views/tmnf-yvry/rows.csv?accessType=DOWNLOAD
	# or https://data.sfgov.org/Public-Safety/SFPD-Incidents-Previous-Three-Months/tmnf-yvry
	import time
	import matplotlib.colors as colors
	import matplotlib.cm as cmx
	from matplotlib import pyplot as plt
	from matplotlib.patches import Patch
	import numpy as np
	import pandas

	<!doctype html>
	<html lang="en" class="breakpoint-medium">
	<head>
	<meta charset="utf-8">
	<title>Metaquery Boilerplate</title>
	<meta name="description" content="">
	<meta name="viewport" content="width=device-width">

	<meta name="breakpoint" content="small" media="(max-width: 480px)">
	<meta name="breakpoint" content="medium" media="(min-width: 481px) and (768px)">