mixpanel.rb

require "open-uri"
require "active_support/base64"

class Mixpanel
  def initialize(token, clock=Time.now)
    @auth_token = token
    @clock      = clock
  end

  def event(name, properties={})
    properties = { :token => @auth_token, :time  => @clock.utc.to_i }.merge(properties)
    request(:event => name, :properties => properties)
  end

  def funnel(name, step, goal, data={})
    data = { :funnel => name, :step => step, :goal => goal }.merge(data)
    event("mp_funnel", data)
  end

  private

  def request(data={})
    encoded = ActiveSupport::Base64.encode64s(data.to_json)
    url = "http://api.mixpanel.com/track/?data=#{encoded}"
    open(url).read == "1"
  end
end

reverse_merge omglolwtf

Bah, extracted from a rails app :) There, I fixed it, now shut up :P