How Building a Custom Programming Language Reveals the Secrets of Language Design

This project demonstrates why building something real is essential to understanding programming language design. By implementing Exper to power a text RPG, the developer encounters real challenges—scoping issues, mutability problems, reference handling—that would never appear in simple tutorial examples. For anyone curious about how Python, JavaScript, and other languages work internally, this hands-on exploration of interpreter design offers authentic, practical insights that go far beyond theory.