This book is a technical reference that covers programming languages, interpretation, lexing, and parsing. The book is intended for readers who have past experience with at least one programming language as well as a basic understanding of C++ fundamentals. For veterans and coding newcomers alike, the book offers foundational subjects and practical recommendations for creating interpreted languages.

The book is organized into 15 chapters, beginning with an overview of computer communication and the history of programming languages. The chapters cover:

Grammar
Lexing
Parsing
Interpreting
Errors and Traceback
Expressions
Statements
Scopes and Environments
Control Statements
Higher-order Variable Types
Built-in Variables
Objects
Members
Functions
The book is written in a technical style and implies some knowledge of computer programming. Throughout the book, there are clear examples and explanations to help readers understand the topics. Additionally, at the end of each chapter, there are tasks to reinforce learning and allow readers to practice their programming skills.

Overall, this book is a thorough introduction to interpreted languages that is appropriate for both beginners and those with some programming expertise.