Emilio Aguilera at WeCode Fest 2018
summary
Emilio Aguilera explains how to refactor an existing SQL-based implementation into modular, testable functional Scala code that can run against different data sources. He presents a five-step, practical process: breaking a monolithic function into smaller pieces, composing those pieces into larger solutions, generalizing patterns for reuse, applying the same solution multiple times, and designing for future changes, demonstrating each step with classes, objects and tests in IntelliJ/Scala.
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