An introduction to dependent types, demonstrating the most beautiful aspects, one step at a time. A program's type describes its behavior. Dependent types are a

A new edition of a textbook that provides students with a deep, working understanding of the essential concepts of programming languages, completely revised, wi

A comprehensive introduction to type systems and programming languages. A type system is a syntactic method for automatically checking the absence of certain er

An introduction to writing proofs about computer programs, written in an accessible question-and-answer style, complete with step-by-step examples and a simple