Recap, and What’s Next (Scala 3 Video)

As a very quick recap, so far in this book you’ve seen:

• Immutable variables
• Immutable data structures
• Pure functions
• How to solve problems just by sketching pure function signatures
• Expression-oriented programming
• Algebraic substitution
• Functional error-handling

Next, we’ll build another complete example that uses all of these concepts. This time — to show more of the details — I’ll show more Scala code as we go through the process.