I don't even remember when I started writing the Write Yourself a Scheme tutorial, but I stopped writing it about 6 years ago when I lost my interest in mercury.

You can find parts of the unfinished tutorial below, a finished uncleaned working implementation of the interpreter can be found in the scratchpad directory of the tutorial repository.

Table of contents

1. Intro
2. Mercury Basics
3. Hello World
4. A Simple Parser
5. Recursion and Parsing Whitespace
6. Algebraic Data Types-and the Base of our Interpreter
7. DCGs and Parsing Continued
8. Typeclasses and Show
9. Beginnings of an Evaluator