Hagelberg-SwarmCoding.org

Swarm Coding

1 Who am I?

1.1 Phil Hagelberg (http://technomancy.us)

• Soli Deo Gloria
• Hacker-Errant, Heroku
• Second-tallest man in Clojure

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./Hagelberg-SwarmCoding/heroku.pdf

2 Who am I?

2.1 Relevant qualification:

• Founded Seajure, Seattle Clojure Group

3 User groups

3.1 What are we trying to achieve?

• Social
• Learning (teaching?)

4 User groups

4.1 The lecture model

• What’s going in this room here
• But not sustainable
• Not even a particularly good way of learning

5 User groups

5.1 The lecture model works if…

• Audience is sufficiently alert, caffeinated, etc
• Presenter can keep your attention.
  • good jokes
  • cat pictures

6 Learning

7 Learning by discussion

7.1 Socratic dialog

7.2 Discussion among a small group

7.3 Asking questions, not giving answers

8 Learning by shared models

8.1 Computer Communications

• by J.C.R. Licklider and Robert Taylor
• Creative communication
  • distinct from simply data transfer

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8.2 Communication: collaborative modeling

9 Learning by shared models

9.1 Computer Communications

9.2 Communication: collaborative modeling

\begin{quote} Any communication between people about the same thing is a common revelatory experience about informational models of that thing. \end{quote}

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9.3 Computers bring immediacy over distance

9.4 Computers remove ambiguity

10 A REPL process as a shared model

10.1 Interactive programs

• Able to act directly on that substance
• Dispensing with intermediate modeling steps
  • (Modeling still happens in your head)

11 The technology

11.1 SSH as a shared user

11.2 \texttt{tmux attach}

11.3 \texttt{lein new hack-project}

11.4 Emacs/Vim

12 Criteria for a hack project

12.1 Short, accessible

12.2 Contrived vs practical (harder, more interesting)

12.3 Start by doing a fresh project each time

13 Running a session

13.1 Start with everyone introducing themselves

• Ascertain skill levels

13.2 Hold a “tooling workshop” session first

13.3 Explain the project, goals

13.4 Pass around control

13.5 By the end, hope to have produced something

• Push to Github/Clojars/Heroku

14 Let’s try it out

14.1 Groups of up to ten

14.2 Project ideas

• Chat log analysis http://www.raynes.me/logs/irc.freenode.net/
• Dependency trees (Clojuresphere data) http://git.io/melange
• Github rankings https://github.com/Raynes/tentacles
• Group web site (members, projects listed)
• Games
  • Mastermind
  • Tic-tac-toe

15 Let’s try it out

15.1 To host:

• Create separate “swarm” user
• Setup script: http://git.io/swarmup.sh

15.2 To join:

• Use the SSH key http://git.io/id_swarm
• \texttt{ssh swarm@host.local}
• \texttt{tmux attach}