artima - Scala's Stackable Trait Pattern

This article describes a Scala design pattern in which traits provide stackable modifications to underlying core classes or traits. One way to use Scala's traits is as stackable modifications. In this pattern, a trait (or class) can play one of three roles: the base, a core, or a stackable. The base trait (or abstract class) defines an abstract interface that all the cores and stackables extend, a

[taroleo]

abstract override defの役割

[golden_eggg]

#scalaconfjp

[katzchang]

抽象ベースクラスと、継承した実装コアクラス、継承して一部メソッドをsuperの同メソッドを呼ぶように実装したトライトに分けると、コア部が可換で多段適用可能なデコレータができるよ、という話。