Functional Programming Fundamentals
Functional Programming Fundamentals
This skill covers the foundational concepts of functional programming. Master these before diving into fp-ts types like Option, Either, and Task. These concepts apply universally across functional programming languages and libraries.
Why Functional Programming?
Functional programming provides:
- Predictability: Pure functions always produce the same output for the same input
- Testability: No mocking of global state or dependencies
- Composability: Small functions combine into complex behavior
- Maintainability: Isolated pieces are easier to understand and change
- Parallelization: Pure functions can safely run concurrently
1. Pure Functions and Referential Transparency
What is a Pure Function?
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