Hamish Campbell hamishcampbell

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rockets

hamishcampbell / gist:837545

Created February 21, 2011 19:18

Example statement to determine linear chainage from line segment (PostgreSQL + PostGIS)

	/**
	* @lon = longitude of selected point
	* @lat = latitude of selected point
	*/
	SELECT
	name,
	CAST(
	offset +
	ST_Length(the_geom) * ST_Line_Locate_Point(the_geom, ST_Point(@lon, @lat))
	) AS Double)

hamishcampbell / SilverStripeBuildUpdater.sh

Created March 6, 2011 22:11

Simple Bash script to automate updating of SilverStripe build submodules.

hamishcampbell / gist:872020

Created March 16, 2011 04:34

Example of a regex expression that crashes Apache on Windows

	<?php
	$rx = <<<'RX'
	/
	(
	(\\.) \| # Any escaped character
	([^<${]) \| # Any character that isn't <, $ or {
	(<[^%]) \| # < if not followed by %
	($[^A-Za-z_]) \| # $ if not followed by A-Z, a-z or _
	({[^$]) \| # { if not followed by $
	({$[^A-Za-z_]) # {$ if not followed A-Z, a-z or _

hamishcampbell / gist:873351

Created March 16, 2011 21:27

ParserRegexp state before Apache (windows) crash

	object(ParserRegexp)[30]
	public 'parser' =>
	object(SSTemplateParser)[29]
	protected 'includeDebuggingComments' => boolean false
	protected 'match_Template_typestack' =>
	array
	0 => string 'Template' (length=8)
	protected 'match_Word_typestack' =>
	array
	0 => string 'Word' (length=4)

hamishcampbell / gist:912757

Created April 10, 2011 21:45

Quick PHP timezone juggling example.

	<?php
	$timezoneAuckland = new DateTimeZone('Pacific/Auckland');
	$timezoneHelsinki = new DateTimeZone('Europe/Helsinki');
	$currentTime = new DateTime('now', $timezoneAuckland);
	$helsinkiTime = new DateTime('now', $timezoneHelsinki);

	printf(
	"It is currently %s <br>",
	$currentTime->format(DateTime::RSS)
	);

hamishcampbell / polyomino.py

Created June 28, 2012 21:55

Polyomino Solver

	# -- coding: utf-8 --
	#!/usr/bin/env python
	"""Finds n-order Polyominos
	https://en.wikipedia.org/wiki/Polyomino

	Hamish Campbell <hn.campbell@gmail.com>
	http://polemic.net.nz
	License: CC-BY 2012, use it for good, not for evil.
	"""

hamishcampbell / gist:4133562

Created November 23, 2012 01:20

Dojo 1.8 / AMD Style Gmaps Loader

	/**
	* Dojo AMD Google Maps Loader Plugin
	*/
	define([
	"dojo/_base/kernel",
	"dojo/topic"
	], function(kernel, topic) {

	var w = kernel.global;
	w._googleApiLoadCallback = function() {

hamishcampbell / sha.js

Last active December 18, 2015 13:59 — forked from wombleton/sha.js

	console.log(require('crypto').createHash('sha1').update('blob 14\0Hello, World!').digest('hex'));

	$> d4fcfe4d339d4e59d168fdf3c0ad445fa980a7d6

hamishcampbell / polyomino.py

Created September 6, 2013 23:26

Polyomino Reference Source - PyCon 2013

	# -- coding: utf-8 --
	#!/usr/bin/env python
	import sys

	class Polyomino(object):

	def __init__(self, iterable):
	self.squares = tuple(sorted(iterable))

	def __repr__(self):

hamishcampbell / polyomino-obfus.py

Created September 7, 2013 01:35

Highly readable Polyomino solution

	import sys, itertools
	class Polyomino(tuple):
	def __hash__(_):return(getattr(_,'',''))or[setattr(_,'',setattr(_,'_',map(min,zip(
	*(setattr(_,'p',_.__class__((c[1],m-c[0]-1)for(c)in(_.p))if'p'in(_.__dict__)else(_))
	or(getattr(_,'p'))))))or(min(getattr(_,'',hash(tuple(sorted(setattr(_,'p',_.__class__(
	[(x-_._[0],y-_._[1])for(x,y)in(_.p)])if(_._[0]or(_._[1]))else(_.p))or(_.p))))),
	hash(tuple(sorted(_.p))))))for(m)in(itertools.repeat(max(max(_,key=max)),4))]and(getattr(_,''))
	def __eq__(*_):return(1&len(set(map(hash,_))))
	def __call__(_,__):return[_.__class__(((__,__),))]if(not(1%__))else(set(itertools.chain(*[set([_.__class__
	(_+tuple([a]))for(a)in(set((c[0]+x,c[1]+y)for(c,(x,y))in(itertools.product(

	<?php
	$rx = <<<'RX'
	/
	(
	(\\.) \| # Any escaped character
	([^<${]) \| # Any character that isn't <, $ or {
	(<[^%]) \| # < if not followed by %
	($[^A-Za-z_]) \| # $ if not followed by A-Z, a-z or _
	({[^$]) \| # { if not followed by $
	({$[^A-Za-z_]) # {$ if not followed A-Z, a-z or _