Stephen De Gabrielle spdegabrielle

I've deprecated this Gist and migrated the CER FAQ to my faculty webpage:

Feel free to submit pull requests on that file to make additions or corrections.

Pre-reqs:

Have Python 3 installed. On macOS, this could be installed from homebrew or even via standard Python 3.6 downloaded installer from https://www.python.org/download. On Linux, just use your package manager.
On macOS:
- Install XCode from the Mac App Store (or install the XCode command line utils).
- Have homebrew installed
On Linux:

Install dlib and face_recognition on a Raspberry Pi

Instructions tested with a Raspberry Pi 2 with an 8GB memory card. Probably also works fine on a Raspberry Pi 3.

Download the latest Raspbian Jessie Light image. Earlier versions of Raspbian won't work.

Write it to a memory card using Etcher, put the memory card in the RPi and boot it up.

	<!DOCTYPE html>
	<html>
	<head>
	<meta http-equiv="Content-type" content="text/html; charset=utf-8">
	<title>Testing Pie Chart</title>
	<!--<script type="text/javascript" src="d3/d3.v2.js"></script>-->
	<script src="http://d3js.org/d3.v2.js"></script>
	<!-- Note: I made good use of the sample code provided by the D3JS community and extended it to fit my needs to create this simple dashboard -->
	<style type="text/css">

	#lang send-exp racket

	(require racket/draw)

	(define-syntax-rule (build-path (p) body ...)
	(let ((p (new dc-path%)))
	body ...
	p))

	(define (quarter-circle p cx cy quarter radius)

	#lang racket/base
	(require 2htdp/universe 2htdp/image lang/posn)
	; The gravitational constant G
	(define G 6.67428e-11)

	; Assumed scale: 100 pixels = 1AU
	(define AU (* 149.6e6 1000))
	(define SCALE (/ 250 AU))

	(struct body (id px py vx vy mass radius color) #:mutable #:transparent) ;Structure of body

	#lang scribble/doc

	Okay, we've made a package and up loaded. But you know what would be lovely?.
	Docs! This tutorial is going to start assuming you have a blank file and now clue where to start. By
	the end we will have written the documentation for this line-of-best-fit library <show>.

	This is racket land, so of course we have a language for documentation! #lang scribble/doc


	@(require scribble/manual

	#lang racket

	(require pict/color)
	(provide
	(contract-out
	[cat-silhouette
	(->i ([width positive?] [height positive?])
	(#:left-ear-extent [left-ear-extent (>=/c 0)]
	#:left-ear-arc [left-ear-arc (real-in 0 (* 2 pi))]
	#:left-ear-angle [left-ear-angle (real-in 0 (* 2 pi))]

	#lang racket
	(provide tweet! (struct-out oauth) current-oauth)
	(require (only-in racket/random crypto-random-bytes)
	json
	net/url
	(only-in net/uri-codec [uri-unreserved-encode %])
	web-server/stuffers/hmac-sha1
	(only-in net/base64 base64-encode))

	;; tweet! : String -> JSON