L5: Extension and Infix Functions

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: Extension functions, extension properties, infix notation for readable DSLs, and receiver scopes.
• Under the Hood: Static resolution of extension functions in Bytecode (Java public static final methods) and why dynamic dispatch (polymorphism) does not apply.
• Incremental Lab (AI Chat CLI): Authoring custom String extensions to format and colorize terminal output ("Error".red(), "AI".cyan()) fluently.

---

Navigation

← Course Syllabus Return to the full lesson curriculum.

← Previous Lesson (L4) Anatomy of Functions.

Next Lesson (L6) → Higher-Order Functions and Lambdas.