Dungeons, Dragons and Functions

on YouTube ↗01h 01m

" summary

Reconstructs D&D rules into precise F# types and shows how F# discriminated unions and records make impossible states unrepresentable, turning vague 300–1,000+ page rulebooks into code. Implements a custom dice DSL and an interpreter that evaluates expressions like “2d4+10”. Ships a working D&D combat simulator compiled to JavaScript with a web UI that both simulates millions of fights for balance and runs simple AI strategies, aiming next at reinforcement learning for smarter monsters.

AI-written summary · about

" chapters (21)

1. 0:00Start
2. 1:40Origin Story
3. 4:44What makes a game interesting
4. 6:14Player's Handbook (PHB)
5. 7:21Playing D&D
6. 9:28Ogres, Goblins, & Company
7. 10:37Abilities
8. 11:01Discriminated Union
9. 11:57Pattern Matching
10. 12:41Modifiers
11. 16:09Goblin attacks
12. 17:17Different structure: OR
13. 18:24Attack: a sketch
14. 19:33Pattern Match to extract data
15. 20:50Modules
16. 24:38Wyvern attacks
17. 27:58The truth...
18. 44:05Evaluation
19. 52:36Automated Decision Making
20. 54:54What's missing
21. 58:20Thank Youl (Cast Bless)

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