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Scala and the JVM · Part 15
I unpack AnyFunSuite from a Java developer’s perspective, test returned Right and Left values, check thrown exceptions with intercept, and verify that independent expectations catch real mistakes.
Scala and the JVM · Part 12
Coming from Java, a String with a lookup method looks wild. I unpack Scala 2 implicit classes into an ordinary wrapper, then show how the compiler can supply its repository argument too.
Scala and the JVM · Part 11
From multiple parameter lists to compiler-supplied repository arguments: real missing and ambiguous implicit errors, explicit fixes, and the difference between a missing dependency and a missing policy.
Scala and the JVM · Part 10
I rebuilt Scala's Cake Pattern as a small checkout application, then traced its component traits, self-type requirements and test wiring from a Java and Spring perspective.
Scala and the JVM · Part 8
I knew how to run sbt, but not how its build model worked. I built a small Scala 2.13 project and traced settings, tasks, scopes, Zinc, dependencies, Coursier and local publication back to the Maven concepts I already knew.
Scala and the JVM · Part 1
Starting Scala 2 from Java and Spring: val and var, expressions, a first method, and a small sbt project you can run. The first step in the Scala/Play series.