Chapter 1, Pure Functional Programming in Go, introduces the declarative style of programming and demonstrates recursion, memorization, and Go's concurrency constructs using the Fibonacci Sequence. We will learn how to benchmark/performance test your recursive code and we will get some bad news.
Chapter 2, Manipulating Collections, shows us how to use intermediate (Map, Filter, and Sort) and terminal (Reduce, GroupBy, and Join) functions to perform data transformations. We use a Mocha-like BDD Go framework to test predicate functions. Itertools helps us grasp the breadth of FP collection manipulating function. Gleam is a fast, scalable distributed map/reduce system with DAG execution.
Chapter 3, Using High-Order Functions ...
