The Functional Toolkit
summary
Explains a compact toolkit of about 11 core functions — specifically map and bind, return, apply/lift and sequence — and shows concrete F# implementations (often three lines) that turn mismatched functions into composable pipelines. Demonstrates a real pipeline: download JSON -> decode DTO -> validate (using applicative to collect multiple errors) -> construct customer -> store in DB, combining async/Result composition via map and bind so the whole flow stays linear and testable.
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chapters (10)
- 0:00Introduction to FP tools
- 5:59Core principles of FP
- 14:21Composition in practice
- 17:56Railway oriented programming
- 25:39Function transformers
- 30:54Understanding effects
- 34:20Working with options
- 37:49Bind and monads
- 47:47Parallel processing
- 51:58Real world examples and conclusion
