API Design for C++, Second Edition, provides a comprehensive discussion of Application Programming Interface (API) development, from initial design through implementation, testing, documentation, release, versioning, maintenance, and deprecation. It is the only book that teaches the strategies of C++ API development, including interface design, versioning, scripting, and plug-in extensibility. Drawing from the author's experience on large-scale, collaborative software projects, this text offers practical techniques of API design that produce robust code for the long term. If presents patterns and practices that provide real value to individual developers as well as organizations. The Second Edition includes all new material fully updated for the latest versions of the standard up to C++23, including a new chapter on concurrency and multithreading, and a new chapter showing how C++ APIs can tnteroperate with Objective-C and Swift code. API Design for C++, Second Edition, focuses on various API styles and patterns that will allow you to produce elegant and durable libraries. Each concept is illustrated with extensive C++ code examples. Fully functional examples and working source code for experimentation are available online. This book will be helpful to new programmers who understand the fundamentals of C++ and who want to advance their design skills, as well as to senior engineers and software architects seeking to gain new expertise to complement their existing talents. Three specific groups of readers are targeted: practicing software engineers and architects, technical managers, and students and educators. Key Features The only book that teaches the strategies of C++ API development, including design, versioning, documentation, testing, scripting, and extensibility. Extensive code examples illustrate each concept, with fully functional examples and working source code for experimentation available online. Covers various API styles and patterns with a focus on practical and efficient designs for large-scale long-term projects. Includes updated URLs and ensures all code examples continue to work with modem compilers and supporting tools.