mgold’s gists

mgold / Viennese.elm

Created May 9, 2014 17:31

Viennese Maze

	-- Viennese Maze Simulator, based on
	-- http://zulko.github.io/blog/2014/04/27/viennese-mazes-what-they-are/

	import Keyboard
	import Window
	import Graphics.Input as Input

	-------------
	-- Helpers --
	-------------

mgold / IPAddr_union.rb

Created April 23, 2014 04:13

Find the smallest CIDR block that contains two IPAddrs, in Ruby.

	require "ipaddr"

	class IPAddr
	# Returns the ipaddr representing the smallest CIDR block that includes both
	# ipaddrs.
	def union(other)
	addr = @addr
	coerced = coerce_other(other).to_i
	prefixlen = self.ipv4? ? 32 : 128
	while addr != coerced

mgold / spinner.elm

Created August 27, 2013 02:08

A spinning canvas on which you can paint. Try it: http://share-elm.com/gists/6348912

	-- Spinner by Max Goldstein

	import Mouse
	import Window
	import Dict (Dict, empty, toList, insert, findWithDefault)
	import Automaton (Automaton, state, run)
	import Graphics.Input (button)

	-- MODEL

mgold / bitmapDraw.elm

Created August 27, 2013 01:54

An infinite grid of black and white pixels in your browser. Try the t, b, w, and c keys after clicking and dragging on this page: http://share-elm.com/gists/6348835/

	-- Bitmap Draw by Max Goldstein

	-- Change the cursor mode with the keyboard:
	-- t Toggle (default)
	-- b Black
	-- w White
	-- c Clear (automatically resets to Toggle afterwards)

	import Mouse
	import Keyboard

mgold / sploosh.elm

Created August 27, 2013 01:48

A fun sploosh ball, written in Elm. See it: http://share-elm.com/gists/6348805

	-- Sploosh Ball by Max Goldstein

	import Window
	import Mouse

	-- Model
	type Spoke = ((Float,Float), Color)

	-- Update
	curColor : Signal Color

mgold / gyrations.elm

Created August 27, 2013 01:42

A screensaver written in Elm (elm-lang.org). Just about everything is sinusoidal. See it at: http://share-elm.com/gists/6348780

	-- Gyrations by Max Goldstein

	import Window

	main = scene <~ foldp (+) 0 (fps 40) ~ Window.dimensions

	scene t (w,h) =
	let minr = 14
	maxr = 40
	time = inSeconds t

mgold / hexBright.c

Created August 5, 2013 20:14

Translates hexidecimal digits into ASCII art, with the brightness correlated to the magnitude of the digit. The input may be either ASCII hex (either upper or lowercase) digits or machine values. Try it on random data, or the compiled executable of the program (and vary your terminal width). An octal version is also available.

	/* hexBright.c - visualize hex data with brightness
	* Max Goldstein
	*
	* example usage:
	* $ head /dev/urandom \| hexdump -e '16/1 "%02x " "\n"' \| ./hexBright
	*/

	#include <stdio.h>

	int main(){

mgold / octBright.c

Last active December 20, 2015 15:59

Translates octal digits into ASCII art, with the brightness correlated to the magnitude of the digit. The input may be either ASCII octal digits or machine octal. Try it on random data, or the compiled executable of the program (and vary your terminal width). A hexidecimal version is also available.

	/* octBright.c - visualize octal data with brightness
	* Max Goldstein
	*
	* example usage:
	* $ od -o < /dev/random \| sed 's/^[0-9]* +//' \| tr -d ' ' \| ./octBright
	*/

	#include <stdio.h>

	int main(){

mgold / arithmetic-diff.py

Last active December 17, 2015 07:29

Play with the differences between linear values, quadratic values, exponential values, and whatever else you like.

	DEPTH = 6
	LENGTH = 12

	#Change me!
	def f(i):
	return i
	#also try:
	#return i**2
	#return 2**i

Max Goldstein mgold