Erin Swenson-Healey laser

If Running Postgres Locally

createuser --superuser --pwprompt stitchfix_owner

Set password to stitchfix_owner, as per config/database.yml

Create Stitchfix Shared Database

What’s This Presentation About?

What This Presentation Is Not

a deep dive into Docker
a comparison of Docker with other container services
a comparison of AWS with other PaaS and IaaS offerings

Assumptions

Preface

Like unit testing but dislike mocks and stubs? Want to keep your business logic separate from your side effects? In this blog post, I'll demonstrate a novel approach to testing which relies not on the [Dependency Injection][4] pattern, but an algebraic data structure and some simple functions.

A Real World Example

I was recently working on a system for a real estate company which merged a

Agenda

Talk about what we did last (short) week
Look at the backlog to ensure that we've got things in the correct order
Talk about our plan for next week

Last Week

Kick-off
Estimation

Dynamic Samples A

GIVEN

a video design D with elements:
- E1: symbol=view_1.text_1,type=text,userEditable=false,defaultText=null
- E2: symbol=view_1.text_2,type=text,userEditable=true,elementLevelDefaultText="Eighty",accountPlanLevelDefaultText="Sixty"
- E3: symbol=view_1.text_3,type=text,userEditable=true,defaultText=null

E3: symbol=view_1.text_4,type=text,userEditable=false,elementLevelDefaultText="Twenty"

What can this thing do so far?

works with PDFV2 (e.g. RLP_BUSINESSCARD_CORP_001_EN) and PDFV3 (IMP_FLYER_2PG_EDE_101) designs, so far
admin can create configurations which specify an image set id, resource-key-to-strings mapping, and symbol-to-strings mapping

{
  "imageSetId": "corcoran-4",
 "resourceKeyValues": {

What's a Functor?

A functor is a type class that is used for types that can be mapped over.

What's it mean to "map over" something?

Map Over a List

mapList :: (a -&gt; b) -&gt; [a] -&gt; [b]

	<html>
	<head>
	<title>Side by Side Tool</title>
	</head>
	<body>
	<div id="foo">
	<label>
	<select name="outputType">
	<option value="gen">Gen</option>
	<option value="comp">Comp</option>

	{
	"resourceKeyValues": {
	"EDE_PROPERTY_ADDRESS": "999 Pine Ave."
	},
	"symbolValues": {
	"view_1.disclaimer_1": "Guaranteed or Your Money Back",
	"agent_1.photo_1": "http://acme-broker.example.com/agents/agent-1.jpg"
	}
	}