Coding Dojo is a practice of pair programming and test-driven development (TDD) where pairs of programmers take turns solving coding problems for short periods, explaining their work, and receiving feedback from others. The goal is to improve skills through collaboration and focusing on writing automated tests before code ("red => green => refactor"). Programmers rotate frequently to work with different partners on challenges in languages like Ruby.

1. Coding Dojo
Gavin Heavyside - SRUG #2 - 26 April 2011

2. Me
• Director of Engineering at MyDrive
• Hands-on coding in Ruby, C++ & others
• Big data, SW architecture, robustness, tdd,
devops, data analysis
• Background of SW for telecoms, mobile,
embedded
• @gavinheavyside

3. • Driver behaviour analysis and scoring for
telematics-based insurance
• Large-scale geospatial processing of GPS
and map data
• Relational DBs - PostgreSQL, MySQL
• Non-relational DBs - Redis, HBase
• Big Data tools - Hadoop
• Built on Linux and open-source stack

4. http://www.flickr.com/photos/
library_of_congress/5476588488

5. • Coding Kata
• http://codekata.pragprog.com/2007/01/
code_kata_backg.html
• Coding Dojo
• Code Retreats
• User Groups

6. Coding Dojo
• Randori-Style
• Pair Programming
• TDD (Baby Steps)
• Rotate pairs every 5 minutes
• Coding pair explain what they are doing
• Audience may give advice when on green

7. Today
• Ruby (1.9.2)
• RSpec (v2)
• Remember Red => Green => Refactor

8. The End
@gavinheavyside
gavin.heavyside@mydrivesolutions.com