The book “Scala for the Impatient” by Cay S. Horstmann is a third edition textbook published by Addison Wesley Professional in the United States. With a subject area of Computers and Programming Languages, specifically focusing on Scala, the book is intended for adult learners and university students. It provides a comprehensive 400-page guide in English on the programming language Scala, making it a valuable resource for those looking to enhance their skills in the field of computing. The trade paperback format and clear language make it accessible and informative for readers seeking to improve their programming abilities.