15312 Foundations Of Programming Languages Direct

Rules enforced at compile-time. They determine whether a program is well-formed and meaningful before execution.

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This is not an introductory course. It is designed for students who have already mastered advanced programming concepts and are ready for a rigorous, theoretical treatment of the subject. The official prerequisites include and 15-251 (Great Theoretical Ideas in Computer Science) or their equivalents. Proficiency in Standard ML (a functional programming language) is expected, and experience with writing formal mathematical proofs is absolutely necessary. Rules enforced at compile-time

"Foundations of Programming Languages" (15-312 / 15312) is much more than a class; it's an intellectual expedition into the heart of computation. By the end of this demanding but rewarding course, you will have learned to see all programming languages through a unified, scientific lens. It's a course that will profoundly influence how you think about, design, and build software for the rest of your career. It is designed for students who have already

This is the domain of , a legendary and foundational course at Carnegie Mellon University (CMU). Originally developed and framed by pioneering computer scientists like Professor Robert Harper, this curriculum treats programming languages not as arbitrary collections of features, but as elegant, rigorous mathematical objects.

Semantics explains how a program behaves. There are three main approaches taught in 15312:

(a well-typed expression is either a value or can take a step) and Preservation (if an expression takes a step, its type remains the same). Effects and Control: