Introduction to Programming in ATS

The article is an introduction to the ATS programming language, described as both syntax-rich and feature-rich. It covers core features including basic functional programming, simple types, recursively defined datatypes, polymorphic types, dependent types, linear types, theorem-proving, programming with theorem-proving (PwTP), and template-based programming. No users, funding, revenue, or market share figures are cited, and no companies or named individuals appear beyond the language itself. The book assumes no prior programming familiarity but warns it will likely prove dense for readers without considerable programming experience. It matters as a compact entry point to ATS's unusually broad type system, and the next thing to watch is how readers without a strong background progress through the more advanced dependent and linear typing material.