Intro to FP in Scala: Exploring a Toolbox for Solving Problems - Part 6 of 6
summary
Shows building concrete Scala DSLs with Free monads, composing algebras via coproducts and injecting them so higher-level verbs stay pure, then writing interpreters as natural transformations to Task Id or StateT. Demonstrates testing by swapping an interpreter that uses stacks for input/output, compiles business algebra into lower-level key-value store and monotonic sequence programs, composes interpreters to Task and runs a working console example with unsafePerformSync, reducing runtime coupling and improving modularity.
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chapters (7)
- 0:00Intro
- 8:46Algebra Logging
- 9:47User Stories
- 11:32Language
- 17:54Utility Functions
- 22:57Algebras
- 25:52Compile
