Preface

Programming with Types is the culmination of multiple years of learning about type systems and software correctness, distilled into a practical book with real-world applications.

I’ve always liked learning how to write better code, but if I were to point out exactly when I started down this path, I’d say it was 2015. I was switching teams at that point and wanted to get up to speed on modern C++. I started watching C++ conference videos, picked up Alexander Stepanov’s books on generic programming, and gained a completely different perspective on how to write code.

In parallel, I was learning Haskell in my spare time and working my way through the advanced features of its type system. Programming in a functional language makes it obvious how some of the features taken for granted in such languages get adopted by more mainstream languages as time goes by.