Functional Programming: The Enterprise Edition

on YouTube ↗48m

" summary

Claims that pure functional Scala works at enterprise scale and that effects belong in types get demonstrated with concrete code: Option and Either replace nulls and exceptions; cats-effect IO wraps S3‑style fetch/write so a review‑insertion bot composes as a value and runs; OptionT and for‑comprehensions tame nested Java getters; applicative product combines independent encryption and validation calls into a safe signup flow. Examples run end‑to‑end against in‑memory caches and simulated S3, and the code returns expected Option/Either/IO results for both good and bad inputs.

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" chapters (12)

1. 0:00Start
2. 1:06Salesforce Tower San Francisco
3. 4:38Enterprise
4. 8:31Why? Blame COBOL.
5. 9:18Why? Blame universities.
6. 15:35Partiality Example 1
7. 16:42Partiality Ex. 1 (functional)
8. 17:32Partiality Example 2
9. 23:01Failure Example (imperative)
10. 23:38Failure Example (functional)
11. 28:26IO Example (functional)
12. 32:46Did you notice patterns?

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