Matt Copperwaite yamatt

Secure IT through Agile delivery

yamatt / bijective.py

Created October 24, 2011 10:21 — forked from zumbojo/bijective.rb

Simple bijective function (base(n) encode/decode) in Python

	# Simple bijective function
	# Basically encodes any integer into a base(n) string,
	# where n is ALPHABET.length.
	# Based on pseudocode from http://stackoverflow.com/questions/742013/how-to-code-a-url-shortener/742047#742047

	ALPHABET = list("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
	# make your own alphabet using:
	# (('a'..'z').to_a + ('A'..'Z').to_a + (0..9).to_a).shuffle.join

	def bijective_encode(i):

yamatt / gist:1295517

Created October 18, 2011 14:13

select random key that is weighted by it's value

	from random import choice

	d = {
	'foo1': 1,
	'foo2': 5,
	'foo3': 3
	}

	choice([k for k in d for x in range(d[k])])

yamatt / gist:845735

Created February 26, 2011 23:24

Run VLC as X user