Let's get Functional (en)
summary
Argues that functional concepts produce concrete benefits: immutable value objects replace shared mutable state, fold replaces loops to sum baskets, and composing small pure functions yields testable reusable bricks. Examples use Kotlin for concise demos and recommends toolchains like RxJava and AutoValue for Android, plus learning Haskell to shift thinking. Also details handling absence of data with Optionals or constructor validation instead of nulls, and shows how to separate pure transformations from side-effecting persistence.
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chapters (15)
- 0:00Intro
- 0:52What is Functional Programming
- 3:06Immutability
- 5:00Pure Functions
- 7:51Null Object Optional
- 11:42Java
- 13:22Functional
- 15:22En extensible
- 16:20En smaller components
- 17:09Functional programming
- 18:11Functions
- 19:39Fault
- 26:51Keep learning
- 28:19Reads
- 29:46Areas of focus
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