This text investigates the fundamental syntax and operational logic of the APL programming language to provide a functional introduction for students and practitioners. Howard A. Peelle, an educator in the field of computer science, utilizes a structured pedagogical approach to explain the unique symbolic notation and array-processing capabilities of APL. The book serves as a foundational guide, focusing on how the language handles data structures and mathematical expressions through its distinctive character set.

Experts recognize this work as a clear, accessible entry point for those unfamiliar with the unconventional syntax of APL. Readers frequently note the logical progression of the chapters, which helps demystify the language's symbolic nature for beginners.