tjackiw

Keybase proof

I hereby claim:

• I am tjackiw on github.
• I am tjackiw (https://keybase.io/tjackiw) on keybase.
• I have a public key ASBDkutB_ZhyEBiv8XHeWwPGBUz_-h5cVm362W9E0N9-uQo

To claim this, I am signing this object:

tjackiw

car = Car.new(2300)
car.log(100)
=> "The car has logged 100 miles, totaling 2400 miles traveled."
car.log(354)
=> "The car has logged 354 miles, totaling 2754 miles traveled."
car.log(300)
=> "The car has logged 300 miles, totaling 3054 miles traveled."
=> "The car needs to be taken in for service!"

tjackiw

class Notifier
  def update(car, miles)
    puts "The car has logged #{miles} miles, totaling #{car.mileage} miles traveled."
    puts "The car needs to be taken in for service!" if car.service <= car.mileage
  end
end

require 'observer'

class Car

tjackiw

class Notifier
  def update(car, miles)
    puts "The car has logged #{miles} miles, totaling #{car.mileage} miles traveled."
    puts "The car needs to be taken in for a service!" if car.service <= car.mileage
  end
end

tjackiw

class Car  
  attr_reader :mileage, :service

  def initialize(mileage = 0, service = 3000)
    @mileage, @service = mileage, service
  end

  def log(miles)
    @mileage += miles
  end

tjackiw

$ ruby neo4j_example.rb 

tjackiw

require 'rubygems'
require 'bundler/setup'
require 'neo4j'

Neo4j::Transaction.run do
  me   = Neo4j::Node.new(:name => 'Me',   :age => 31)
  bob  = Neo4j::Node.new(:name => 'Bob',  :age => 29)
  mark = Neo4j::Node.new(:name => 'Mark', :age => 34)
  mary = Neo4j::Node.new(:name => 'Mary', :age => 32)
  john = Neo4j::Node.new(:name => 'John', :age => 33)

tjackiw

require 'rubygems'
require 'bundler/setup'
require 'neo4j'

Neo4j::Transaction.run do
  me   = Neo4j::Node.new(:name => 'Me',   :age => 31)
  bob  = Neo4j::Node.new(:name => 'Bob',  :age => 29)
  mark = Neo4j::Node.new(:name => 'Mark', :age => 34)
  mary = Neo4j::Node.new(:name => 'Mary', :age => 32)
  john = Neo4j::Node.new(:name => 'John', :age => 33)

tjackiw

require 'rubygems'
require 'bundler/setup'
require 'neo4j'

Neo4j::Transaction.run do
  # our code here
end

tjackiw

require 'rubygems'
require 'bundler/setup'
require 'neo4j'

Neo4j::Transaction.run do
  me   = Neo4j::Node.new(:name => 'Me',   :age => 31)
  bob  = Neo4j::Node.new(:name => 'Bob',  :age => 29)
  mark = Neo4j::Node.new(:name => 'Mark', :age => 34)
  mary = Neo4j::Node.new(:name => 'Mary', :age => 32)
  john = Neo4j::Node.new(:name => 'John', :age => 33)