Intro to FP in Scala: Exploring a Toolbox for Solving Problems - Part 5 of 6

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" summary

Part of a hands‑on Scala FP workshop that implements a concrete solution: state monad implemented from scratch and then used to replace hand‑rolled s -> (s, A) functions. Code shows map/flatMap, wrapping functions, and a cache-as-immutable-map user repo example where get/insert/repo return State and a for‑comprehension passes state for you. Tests run the State via run, expose the previous bug of manually threaded state, and demonstrate a working pattern; no slides provided.

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" chapters (18)

1. 0:00Intro
2. 2:14Modularity
3. 6:11File
4. 9:30Repository
5. 11:43Cash
6. 12:49Caches
7. 14:01State Type
8. 15:30Implementing State
9. 17:33State parameterisation
10. 20:05Map function example
11. 23:29Skite
12. 24:57Following types
13. 25:48Flat map
14. 27:07State
15. 28:50State monad
16. 29:59State functions
17. 31:45For comprehension
18. 34:12Run

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