mneedham’s gists

mneedham / gist:1811708

Created February 12, 2012 23:20

hello_world.rb

	require 'sinatra/base' # this is 'modular' style
	require 'repository'

	class HelloWorld < Sinatra::Base
	def repository
	@repository \|\|= Repository.new
	end

	get '/*' do
	repository.get('foo')

mneedham / gist:1811716

Created February 12, 2012 23:21

hello_world_spec.rb

	require 'rspec'
	require 'rack/test'
	require 'hello_world'
	require 'repository'

	describe 'Hello World application' do
	include Rack::Test::Methods

	def app
	HelloWorld

mneedham / gist:2032801

Created March 13, 2012 23:56

euler11

mneedham / gist:2730307

Created May 19, 2012 09:59

SPOJ #15

	package com.algoclass.dij

	import collection.immutable.IndexedSeq


	object Main {
	def readCityBlock(id: Int) = {
	val cityName = readLine()
	val neighbours = readLine().toInt
	val fromVertex = new Vertex(cityName, id)

mneedham / neo_loading.rb

Created June 10, 2012 12:41

Loading stuff into neo via the batch API

	# So the problem is inserting data into neo using the batch API. So we have a bunch of people and we want to put them into the graph and also
	# add to to the index so that we can search for them.
	# The way the batch API works is that you can refer to previous commands by referencing their index in the list of commands (zero indexed)
	# e.g. if I want to reference the person added in the first command I would reference that node as {0}
	# You should be able to see how that works in the code below.

	neo_people_to_load = Set.new
	neo_people_to_load << { :name => "Mark Needham", :id => 1 }
	neo_people_to_load << { :name => "Jenn Smith", :id => 2 }
	neo_people_to_load << { :name => "Chris Ford", :id => 3 }

mneedham / rover.hs

Created June 15, 2012 22:34 — forked from uday-rayala/rover.hs

Mars rover in haskell

	data Position = Position Int Int Direction
	deriving (Show, Eq, Read)
	data Direction = N \| E \| W \| S
	deriving (Show, Eq, Enum, Bounded, Read)
	data Command = L \| R \| M
	deriving (Show, Eq, Enum, Bounded, Read)

	data DeltaPosition = DeltaPosition Int Int deriving (Show)

	data State = State {

mneedham / gist:2978253

Created June 23, 2012 12:59

thoughtworks colleague to colleague algorithm

	require 'rubygems'
	require 'neography'

	start_time = Time.now
	puts "Start Time: #{start_time}"

	@neo = Neography::Rest.new(:port => 7476)

	all_the_people_query = "start n = node(*) where n.type? = 'person' and has(n.name) return n.name, id(n)"
	all_the_people = @neo.execute_query(all_the_people_query)["data"]

mneedham / gist:2983831

Created June 24, 2012 16:05

neo4j query to find thoughtworks colleagues of colleagues

	START n = node(*)
	MATCH n-[r:colleagues*1..2]->c, n-[r2:member_of]->office
	WHERE n.type? = 'person' and has(n.name) and (not(has(r2.end_date))) and office.name = 'London - UK South' and (not(has(c.thoughtquitter)))
	RETURN n.name, count(distinct(c)) AS connections, office.name
	ORDER BY connections DESC

mneedham / gist:3125294

Created July 16, 2012 21:45

people jen worked with

mneedham / gist:3684005

Created September 9, 2012 12:05

neo4j: cypher vs core API

	cypher:

	START researchArea = node:research_areas('research_area_id:1'), month = node:months('month:8'), year = node:years('year:2012')
	MATCH researchArea-[:has_child*1..5]->otherResearchArea-[:has_product]->product-[:sold]->sales-[:soldInMonth]->month, sales-[:soldInYear]->year
	RETURN DISTINCT(sales.sales), sales.name, product

	core API:

	GraphDatabaseService db = new GraphDatabaseFactory().newEmbeddedDatabase("/path/to/db");

Mark Needham mneedham