Game of Life - Seattle.rb Workshop

Next Match 3rd, 2015, Seattle.rb will conduct a workshop based on Conway's Game of Life. Here are the details of how it will all work.

Transcript

1. Seattle.rb Workshop Have laptop, will code! March 2015
2. How long? Pair & Pick Coding Summary 15” 45” 10” A bit over an hour.
3. How will it work? Pair & Pick Coding Summary Step 1: Pair Up! By experience level. Yet totally flexible.
4. How will it work? Pair & Pick Coding Summary Step 2: Pick your poison! The exercise is to recode… …a problem you know…
5. How will it work? Pair & Pick Coding Summary Step 2: Pick your poison! The exercise is to recode… …a problem you know… …with added constraint/s
6. How will it work? Pair & Pick Coding Summary Step 2: Pick your poison! The exercise is to recode… …a problem you know… …with added constraint/s …randomized!!
7. Wheel of Misfortune Example Constraints: • mute ping pong • no conditionals • no primitives as I/O • methods <= 3 lines • no getter/setters • no instance vars • …and many more
8. How will it work? Pair & Pick Coding Summary Fear not! • You can pick your constraint, • …or let fate decide (i.e. wheel!), • …or be creative! You and your partner decide.
9. How will it work? Pair & Pick Summary Coding for 45 minutes. Coding
10. How will it work? Coding Summary Volunteer basis. Step up and share conclusions. Show off cool code. Summary Pair & Pick
11. Which problem? Conway’s Game of Life (GoL): - Proven concept. - Easy to code. - Good for newbies and senior dev. - Digital Petri Dish.
12. Game of Life An infinite two-dimensional grid of square cells.
13. An infinite two-dimensional grid of square cells. Each cell is in one of two possible states, dead or alive. Game of Life
14. An infinite two-dimensional grid of square cells. Each cell is in one of two possible states, dead or alive. Every cell interacts with its eight neighbors. 1 2 3 4 5 6 7 8 Game of Life
15. An infinite two-dimensional grid of square cells. Each cell is in one of two possible states, dead or alive. Every cell interacts with its eight neighbors. At each step in time, 2 rules decide which cells live and die. Game of Life
16. An infinite two-dimensional grid of square cells. Each cell is in one of two possible states, dead or alive. Every cell interacts with its eight neighbors. At each step in time, 2 rules decide which cells live and die. Births / deaths happen simultaneously in a tick of the clock. Game of Life
17. Game of Life Rules A living cell stays alive if and only if it has 2 or 3 living neighbors. 1 A 2 B 3 C 4 5 1 A 2 B 3 C 4 5
18. Game of Life Rules A dead cell with exactly 3 live neighbors becomes alive! 1 2 7 3 4 A 5 6 8 B 9 0 1 2 7 3 4 A 5 6 8 B 9 0
19. It’s Alive!
20. Fork it! https://github.com/SeaRbSg/workshops • Example code (with testing), • visualization code from Ryan Davis, • and resources (code, history, videos,…). sotoseattle@gmail.com