Type Refinements in Scala: Making Your Types More Sophisticated Than Your Friends
Briefly

Scala's powerful compile-time type manipulation tools allow developers to enforce type safety and create robust domain-specific languages, enhancing the capabilities of the language immensely.
Type constraints using =:= and <: provide a mechanism for developers to define relationships between types, enabling functions to check for type equivalence and subtyping at compile time.
With type-level conditionals introduced in Scala 3, developers can utilize match types to create intricate type logic that operates similarly to pattern matching in value-based logic.
By using type classes, Scala promotes flexible design patterns that empower developers to define behavior based on the types instead of being tied to concrete implementations.
Read at Medium
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