Gavin Wahl gavinwahl

gavinwahl / gist:943477

Created April 27, 2011 00:22

	expand (Plus a) = foldr interleave [] $ do
	match <- expand a
	return $ match:(map (match++) (expand (Plus a)))

	expand (Plus a) = (concat . ap (iterate . liftM2 (++) . expand) expand) a

gavinwahl / gist:1244417

Created September 27, 2011 05:43

relation algebra

gavinwahl / tags.py

Created September 28, 2011 19:34

tmb and div nodes

	from django import template

	register = template.Library()

	class ParseClassesNode(template.Node):
	def parse_until(self, parser, token, end):
	contents = token.split_contents()
	self.classes = ' '.join(contents[1:])
	self.nodelist = parser.parse((end,))
	parser.delete_first_token()

gavinwahl / commit-msg

Created December 7, 2011 23:54

commit-msg hook that checks Verheoff checksums

	#! /usr/bin/env python

	# Verhoeff implementation from Hermann Himmelbauer,
	# http://en.wikibooks.org/wiki/Algorithm_Implementation/Checksums/Verhoeff_Algorithm#Python

	verhoeff_table_d = (
	(0,1,2,3,4,5,6,7,8,9),
	(1,2,3,4,0,6,7,8,9,5),
	(2,3,4,0,1,7,8,9,5,6),
	(3,4,0,1,2,8,9,5,6,7),

gavinwahl / gist:3768115

Created September 22, 2012 22:44

simple python-like expressions

	import ast
	import operator


	ops = {
	ast.Add: operator.add,
	ast.Mult: operator.mul,
	ast.Sub: operator.sub,
	ast.Div: operator.truediv,
	ast.FloorDiv: operator.floordiv,

gavinwahl / gist:3783150

Created September 25, 2012 17:00

	<html>
	<body>
	<div>
	<input type=file id="the_file">
	<button id="prev" onclick="goPrevious()">Previous</button>
	<button id="next" onclick="goNext()">Next</button>

	<span>Page: <span id="page_num"></span> / <span id="page_count"></span></span>
	</div>

gavinwahl / python.snippets

Created November 8, 2012 20:12

python super call snippet

	snippet sup
	super(`GetCurrentPythonClass()`, `GetFirstPythonArg()`).`GetCurrentPythonMethod()`(${1:`GetCurrentPythonArgs()`})${2}

gavinwahl / base.py

Created April 10, 2013 20:22

`Resource` class to make django-rest-framework less tedious.

	class Resource(object):
	class Base(object):
	pass

	class List(generics.ListCreateAPIView):
	pass

	class Detail(generics.RetrieveUpdateDestroyAPIView):
	pass

gavinwahl / tags.py

Created May 8, 2013 23:00

`map` template tag

	import uuid

	from django import template
	from django.template.base import Token, TOKEN_BLOCK

	register = template.Library()


	class MapNode(template.Node):
	def __init__(self, var_name, tag, list):

gavinwahl / mixins.py

Created June 2, 2013 18:18

DecoratorMixin is a mixin factory that converts any view decorator into a class-based view mixin.

	def DecoratorMixin(decorator):
	"""
	Converts a decorator written for a function view into a mixin for a
	class-based view.

	::

	LoginRequiredMixin = DecoratorMixin(login_required)

	class MyView(LoginRequiredMixin):