L12: Delegation and Delegated Properties

Lesson in Preparation (WIP)

This lesson is currently undergoing pedagogical drafting and development. It will soon be available with detailed visual diagrams, in-depth explanations, and its corresponding milestone in the AI Chat CLI incremental lab.

What will you learn in this lesson?

In this lesson we will explore:

• Deep Theory: First-class interface delegation (by), standard library property delegates (lazy, Delegates.observable, Delegates.vetoable), and implementing Custom Property Delegates via ReadOnlyProperty / ReadWriteProperty.
• Under the Hood: How the compiler generates hidden synthetic fields ($$delegate) and accessor methods redirecting property calls to getValue and setValue.
• Incremental Lab (AI Chat CLI): Building a custom property delegate to automatically persist message history to disk (history.txt) whenever state changes.

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