danielharan

# Example use:
# weigh_by_relative_importance(@report.items, :cell_value, [2,4,6,8,10]) do |item,weight|
#   xml.movie :lat => item.latitude, :long => item.longitude, :title => item.city,
#             :height => weight, :width => weight
# end
# Code inspired by http://www.juixe.com/techknow/index.php/2006/07/15/acts-as-taggable-tag-cloud/
# and meant to be usable for items on a map (as above) or tags
module MapHelper
  def weigh_by_relative_importance(items, method_name, classes)
    sorted = items.collect {|item| item.send(method_name)}.sort

danielharan

class Jaccard
  def self.coefficient(a,b)
    result = (a & b).length / (a + b).uniq.length.to_f
    (result * 1000).round / 1000.0
  end
end

danielharan

# > {1 => 'a', 2 => 'b', 3 => 'a'}.values.histogram
# => {"a"=>2, "b"=>1}
class Array
  def histogram
    inject(Hash.new(0)) do |memo,value|
      memo[value] += 1
      memo
    end
  end
end

danielharan

class Euclidean
  class << self
    def similarity(item,other)
      new.sim(item,other)
    end
    
   #inline(:Ruby) do |builder|
   #  builder.optimize :similarity
   #end

danielharan

$ rake stats
(in /Users/danielharan/projects/giraffesoft/SEEKRIT)
+----------------------+-------+-------+---------+---------+-----+-------+
| Name                 | Lines |   LOC | Classes | Methods | M/C | LOC/M |
+----------------------+-------+-------+---------+---------+-----+-------+
| Controllers          |   283 |   234 |      15 |      28 |   1 |     6 |
| Helpers              |   185 |   108 |       0 |      13 |   0 |     6 |
| Models               |   304 |   229 |       9 |      28 |   3 |     6 |
| Libraries            |   263 |   147 |       1 |      30 |  30 |     2 |
| Functional tests     |   857 |   689 |      17 |      10 |   0 |    66 |

danielharan

# We order a LOT of pizza at GiraffeSoft
# (there are 14 empty boxes on the table, and 3 more on the way)
# So, what's the cheapest way to buy them?
#
# in irb, 
# include PizzaOptimizer
# compare([[9,11],[12,14],[14, 21]])
# 9" @ 11 => 0.270170428088094
# 12" @ 14 => 0.25788995408409
# 14" @ 21 => 0.331572798108115

danielharan

$ time thor scraper:extract cbc_scraper postal_codes.txt > codes_to_edids.csv
real    193m57.176s
user    0m39.874s
sys     0m15.645s

danielharan

#!/usr/bin/env ruby

require 'rubygems'
require 'thin'
require 'sinatra'

post(/.*/) do
  `rake deploy:stage`
end

danielharan

class ApplicationController < ActionController::Base
  def set_time_zone
    if current_user
      Time.zone = current_user.time_zone 
      logger.debug "set time zone to #{Time.zone.name}"
    end
  end
end

class Reports::BaseController < ApplicationController

danielharan

# Script written a year ago to get SAQ wines...
#
# first, get all search pages
def url(i)
  "http://www.saq.com/webapp/wcs/stores/servlet/CatalogSearchResultView?storeId=10001&langId=-2&catalogId=10001&searchTerm=&resultCatEntryType=2&beginIndex=#{i}&tri=RechercheUCIProdDescAttributeInfo&sensTri=AscOperator&searchType=400&codeReseau=&categoryId=11748&viewTaskName=SAQCatalogSearchResultView&catalogVenteId=&origineId=&codePrix=&pageSize=100"
end

(0..71).each do |i|
  `curl '#{url(i*100)}' > saq/#{i*100}`
  sleep(30)