orion elenzil elenzil

programming. robots. 3d printing. computational geometry. mobile. mixed reality.

elenzil / gist:5c52eccc33c7f8616755

Last active August 29, 2015 14:19

orion's solution to cheryl's birthday

	this is the puzzle: http://www.techworm.net/2015/04/when-the-hell-is-cheryls-birthday-a-math-problem-from-singapore-goes-viral.html

	first, the puzzle is a little weird because it doesn't explain how Albert knows Bernard does not know.
	but ignoring that, or assuming that before Albert spoke, Bernard said "I do not know".

	it's also not explicit about who knows which:
	I make the assumption that Albert knows the month and Bernard knows the day number.

	Albert knows Bernard does not know, which means it's not one of the day numbers which occur only once,
	which means it's not May 19 or June 18.

elenzil / git_to_ssh.sh

Created February 16, 2017 00:31

osx bash script to convert all repositories to use ssh urls. useful when moving to ssh access from http, which is good for two-factor authentication.

	#!/bin/bash

	# this is provided as-is, with no guarantees that it will work or not explode your computer.
	# written for OSX.
	#
	# orion elenzil 2017
	#
	# Motivation:
	# If you are moving to two-factor authentication,
	# you may also want to move from http-access to ssh-access.

elenzil / justbytes.c

Last active November 11, 2024 07:58

super simple table of hex, decimal, binary and ascii. with source. 0 through 255 and -128 through 127 in decimal, binary, and hex.

elenzil / anagram_substring.py

Last active July 5, 2018 20:49

	import copy

	# fun from Ernest!
	#
	# Given two strings s and t, determine whether some anagram of t is a substring of s.
	# For example: if s = "udacity" and t = "ad", then the function returns True.
	# Your function definition should look like: question1(s, t) and return a boolean True or False.


	# approach by orion.

elenzil / anagram_substring.py

Last active July 6, 2018 18:04 — forked from hyponymous/anagram_substring.py

	import copy
	import time

	# fun from Ernest!
	#
	# Given two strings s and t, determine whether some anagram of t is a substring of s.
	# For example: if s = "udacity" and t = "ad", then the function returns True.
	# Your function definition should look like: question1(s, t) and return a boolean True or False.

	def q_ernest(s, t):

elenzil / brython_dict.html

Created October 9, 2018 18:10

brief demonstration of what seems like a bug in brython's handling of javascript dictionary objects.

	<html>
	<head>
	<script type="text/javascript" src="/src/brython.js"></script>
	<script type="text/python">
	from browser import window
	import json

	def call_me():
	s = json.dumps(window.my_dict_1.to_dict())
	print("dict 1 serialized by python: %s" % (s))

elenzil / BetterToggleGroup.cs

Last active May 5, 2024 20:18 — forked from jmbeach/BetterToggleGroup.cs

Improved ToggleGroup for Unity GUI

	using System;
	using UnityEngine;
	using UnityEngine.UI;

	// based on https://gist.github.com/jmbeach/78c3e46669db89628fce
	public class BetterToggleGroup : ToggleGroup {

	public Action<Toggle> OnChange;

	protected override void Start() {

elenzil / gist:d3af54a16c7562bfdcd19d440f9fce7c

Created May 2, 2019 17:04

command-line for viewing a repository's network graph similar to GitHub's

	# GitHub recently "deprecated" the network view of repositories, which was a tool i relied on.
	# merging this S.O. answer: https://stackoverflow.com/a/9074343/230851
	# with some other research gets me to the command below.
	# the only notable addition is setting the ordering to --date-order, to match github's network view.
	#
	# note!
	# you'll still need to `git fetch` prior to this to view branches on the server.

	git log --all --graph --date-order --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit

elenzil / digits.cpp

Last active October 5, 2020 17:22

brute force & iterative solution to the self-descriptive ten-digit base-ten number problem. generalized to N digits, base 10. (1 <= N <= 10)

	#include <iostream>
	#include <iomanip>
	#include <set>
	#include <vector>

	void printIt(uint64_t n, char s[11], size_t digits = 10) {
	char format[100];
	snprintf(format, 100, "%%0%dju", digits);
	snprintf(s, 11, format, n);
	}