Rocky Mountain Ruby 9/30/2016 I share stories and examples from open source, business and community organizing: how communication about what we do is as important as the work itself. I'll also dive into coding as communication with an example of good API design highlighting the expressiveness of the Ruby language.

1. COMMUNICATION
IS A TECHNICAL SKILL
Sarah Allen
@ultrasaurus

13. MAKING SOFTWARE FUN

14. MAKING SOFTWARE FUN

15. EXAMPLESSOCIAL CHANGE
BUSINESS
OPEN SOURCE

16. COMMUNICATION PATTERNS
1. BIG VISION
2. CONCRETE STEP
3. THE PATH

17. SOCIAL CHANGE
BRIDGE FOUNDRY

19. Bridge Foundry
Workshops

20. DIVERSE TEAM
CHILDCARE
FOOD
INSTALLFEST
DAY OF CODING
Bridge Foundry
Workshops

21. DIVERSE TEAM
CHILDCARE
FOOD
INSTALLFEST
DAY OF CODING
Bridge Foundry
Workshops

22. DIVERSE TEAM
CHILDCARE
FOOD
INSTALLFEST
DAY OF CODING
Bridge Foundry
Workshops

23. DIVERSE TEAM
CHILDCARE
FOOD
INSTALLFEST
DAY OF CODING
Bridge Foundry
Workshops

24. DIVERSE TEAM
CHILDCARE
FOOD
INSTALLFEST
DAY OF CODING
Bridge Foundry
Workshops

25. MOVING THE NEEDLE: HOW SF RUBY GOT TO 18% — SARAH MEI

26. BUSINESS
FIREBASE

27. "HELP DEVELOPERS
BUILD BETTER APPS
AND GROW
SUCCESSFUL
BUSINESSES"
James Tamplin

30. FIFTEEN MINUTES
DEVELOPER PRODUCTIVITY

31. YOUR PRODUCT IS NOT JUST YOUR CODE
DOCUMENTATION, WEBSITE,
BLOG
GITHUB
STACK OVERFLOW
SOCIAL MEDIA
CONFERENCE TALKS, MEETUPS, HACKATHONS,

35. MAKE PEOPLE
FEEL POWERFUL
Judy Tuan presenting
Firebase app: Mobile Graffiti

36. OPEN SOURCE
RACK

37. CHRISTIAN NEUKIRCHEN
HTTP://CHNEUKIRCHEN.ORG/BLOG/ARCHIVE/2007/02/INTRODUCING-RACK.HTML

38. 8 minutes on
Rack
based on a presentation by
Dan Webb (dan@danwebb.net)
@danwrong
http://slidesha.re/dan_on_rack

42. A Convention

43. If you have a
Ruby object...

44. that has a call method which takes
one argument...
app.call(env)

45. and that method returns an array
with 3 elements...
[200, { 'Content-Type' => 'text/plain' }, 'Hello World!']

46. then you can connect it to any web
server that supports Rack
require 'thin'
Rack::Handler::Thin.run(app, :Port => 4000)

47. and you've got
yourself a web
application

48. That's it.

49. For Example...

50. app = Proc.new do |env|
[200, { 'Content-Type' => 'text/plain' },
'Hello World!']
end
require 'rubygems'
require 'thin'
Rack::Handler::Thin.run(app, :Port => 4000)

51. class HelloWorld
def initialize(name)
@name = name
end
def call(env)
[200, { 'Content-Type' => 'text/plain' },
"Hello #{@name}!"] end
end
require 'rubygems'
require 'rack'
Rack::Handler::Mongrel.run(HelloWorld.new("Dan"),
:Port => 4000)

52. def call(env)

53. {
"SERVER_NAME"=>"localhost",
"HTTP_ACCEPT_ENCODING"=>"gzip,deflate",
"HTTP_USER_AGENT"=>"Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en- GB;
rv:1.9.0.4) Gecko/2008102920 Firefox/3.0.4",
"PATH_INFO"=>"/",
"SCRIPT_NAME"=>"",
"SERVER_PROTOCOL"=>"HTTP/1.1",
"HTTP_ACCEPT_LANGUAGE"=>"en-gb,en;q=0.5",
"HTTP_HOST"=>"localhost:4000",
"REMOTE_ADDR"=>"127.0.0.1",
"HTTP_KEEP_ALIVE"=>"300",
"REQUEST_PATH"=>"/",
"SERVER_SOFTWARE"=>"thin 0.8.2 codename Double Margarita",
"HTTP_ACCEPT_CHARSET"=>"ISO-8859-1,utf-8;q=0.7,*;q=0.7",
"HTTP_VERSION"=>"HTTP/1.1", "REQUEST_URI"=>"/",
"SERVER_PORT"=>"4000",
"QUERY_STRING"=>"",
"GATEWAY_INTERFACE"=>"CGI/1.2",
"HTTP_ACCEPT"=>"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
"HTTP_CONNECTION"=>"keep-alive",
"REQUEST_METHOD"=>"GET"
}

54. [200, { 'Content-Type' => 'text/plain' }, "Hello #{@name}!"]
Status Code

55. [200, { 'Content-Type' => 'text/plain' }, "Hello #{@name}!"]
HTTP Headers

56. [200, { 'Content-Type' => 'text/plain' }, "Hello #{@name}!"]
Response Body

57. Response body can be any
object that respond_to?(:each)
file = File.new('myfile.xml')
[200, { 'Content-Type' => 'application/xml' }, file]

58. For Example...

59. class StreamingFile
def initialize(file)
@file = file
end
def length
File.size(@file)
end
def last_modified
File.mtime(@file).rfc822
end
def each
File.open(@file, "rb")
do |file|
while part = file.read(8192)
yield part
end
File.delete(@file)
end
end

60. [200, {
'Content-Type' => 'audio/mp3',
'Content-Length' => file.length.to_s
}, file]

61. Common interface

62. • Passenger
• Mongrel
• CGI
• SCGI
• FastCGI
• Thin
• Ebb
• Fuzed
• Webrick
• Litespeed

63. Write once,
serve however...

64. Michael Basial: Light Bulb
https://www.flickr.com/photos/basial/3010044632/

65. WHAT WE DOCOMMUNICATION

67. ADOPTION OF LANGUAGES WITH NEW POWERS
ERLANG
CLOJURE
SCALA
GO
RUST
SWIFT
ELIXIR
ELM

68. FUNCTIONAL
ELIXIR ERLANG VM (2012)
ELM JAVASCRIPT (2012)
SCALA JAVA VM (2003)
CLOJURE JAVAVM (2007)
SWIFTiOS/Mac/Linux (2014)
HASKELL - 1990
ERLANG - 1986
ML - 1973
LISP - 1958
C - 1972
COBOL - 1959
FORTRAN - 1956
GO (2009)
JAVA - 1995
C++ - 1983OBJECTIVE C - 1984
SMALLTALK - 1972
JAVASCRIPT - 1995
RUBY - 1995
IMPERATIVEOBJECT-ORIENTED
RUST (2010)

69. LEARN A NEW LANGUAGE

70. LEARN A NEW LANGUAGE
MAKE A NEW LANGUAGE

71. CODE IS
COMMUNICATION

72. WHAT WILL
YOU SAY?

73. PHOTO CREDITS
▸ 13) Isaiah van Hunen: Face (original 1)
https://www.flickr.com/photos/isaiah115/7301506118
https://creativecommons.org/licenses/by-sa/2.0/
▸ 14) photo by Lee Lundrigan
▸ 32) https://firebase.googleblog.com/2013/05/firebase-at-angelhack-sf-2013.html
▸ 64) Michael Basial: Light Bulb https://www.flickr.com/photos/basial/3010044632/
▸ 66) Wizard: http://mortal-affairs.wikia.com/wiki/Wizards