Scala15 min read
Should you migrate from Scala 2 to Scala 3?
A technical decision guide to compatibility, macros, dependencies, compiler migration modes, cross-building and a staged route from Scala 2.13 to Scala 3.
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Knowledge and insights.
Technical articles on languages, databases, serverless platforms and the awkward realities of keeping systems moving.
Showing 1–9 of 49 articles
Scala14 min read
How Scala fits together: language, runtime and ecosystem
A technical guide to Scala’s type system, execution models, common use cases and the libraries that turn the language into a production stack.
Read articleScala language9 min read
Partial functions in Scala: useful precision, not incomplete code
How PartialFunction models a function defined for only part of its input, how collect and recover use it, and where ordinary total functions are safer.
Read articlePlay Framework11 min read
Modelling a Play Framework application beyond controllers and JSON
A practical route from untrusted HTTP input to validated domain commands, explicit service outcomes and stable Play JSON responses.
Read articleScala language9 min read
Case classes are data models, not your whole domain
What Scala case classes generate, why value semantics are useful, and how to keep validation, invariants and persistence concerns under control.
Read articleScala language9 min read
Using traits as precise boundaries in Scala
Traits can define capabilities, share behaviour and close a domain hierarchy; those are different jobs with different design trade-offs.
Read articleFunctional Scala11 min read
Typeclasses in practical Scala: behaviour without inheritance
How a typeclass separates behaviour from data, how Scala 2 implicits and Scala 3 given instances supply evidence, and when the pattern is worth using.
Read articleFunctional Scala11 min read
Error handling as values in Scala
Model expected failures with sealed types and Either, keep unexpected failures distinct, and translate both deliberately at HTTP and asynchronous boundaries.
Read articleFunctional Scala14 min read
Option, Either and other monads in practical Scala
How Option, Either, collections, Future and IO represent different computational contexts—and how map, flatMap and for-comprehensions compose them.
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