Principles of Scala FP

Scala supports all FP features. However, it is not easy to cover them in a single chapter. So we will discuss only the following few important FP features in this chapter:

• Pure functions
• Immutability (Immutable data)
• Referential transparency
• Functions are first-class citizens
• Anonymous functions
• Higher-Order Functions (HOF)
• Currying
• Tail recursion
• Implicit
• Typeclasses

FP Design Patterns

The following three are the most important and frequently used Functional Design Patterns.

• Monoid
• Monad
• Functor (Applicative functor)

If you are new to Scala FP features and want to learn them in depth, I recommend that you refer to any Scala Basics books before picking this one.

Consider the following Scala FP features...