クラス、プロパティ、継承、インターフェイス、レコード、ジェネリックを学びます。
Model state and behavior together in a C# class.
Protect object invariants with validated properties.
Reuse and specialize behavior through a base class.
Call different implementations through one shared contract.
Define capabilities that unrelated types can implement.
Represent immutable data with concise record types.
Write reusable, type-safe classes and methods.
Assemble behavior from collaborating objects.
