Further Reading: Advanced Object Pascal

Official Documentation

  • Free Pascal Reference Guide — Operator Overloading https://www.freepascal.org/docs-html/ref/refch15.html The official documentation on operator overloading syntax, overloadable operators, and assignment operators in Free Pascal.

  • Free Pascal Reference Guide — Class Helpers https://www.freepascal.org/docs-html/ref/refse58.html Documentation on class helpers, record helpers, and type helpers, including scoping rules and limitations.

  • Free Pascal Reference Guide — Anonymous Functions https://www.freepascal.org/docs-html/ref/refse68.html Documentation on anonymous functions, closures, and the reference to type modifier.

  • Free Pascal Reference Guide — RTTI https://www.freepascal.org/docs-html/rtl/typinfo/index.html Reference for the TypInfo unit providing run-time type information functions.

Books

  • Marco Cantu, Object Pascal Handbook (latest edition) Comprehensive coverage of all features in this chapter from the Delphi perspective. The chapters on operator overloading, class helpers, and anonymous methods are particularly relevant.

  • Martin Fowler, Domain-Specific Languages (2010) Fluent interfaces are a form of internal domain-specific language (DSL). Fowler's treatment explains the design thinking behind fluent APIs and when they are appropriate.

  • Harold Abelson, Gerald Jay Sussman, Structure and Interpretation of Computer Programs (2nd ed., 1996) The classic text on functional programming concepts. While written in Scheme, the ideas about higher-order functions, closures, and functional composition translate directly to the anonymous function patterns in this chapter.

Articles and Online Resources

  • "Operator Overloading" — Free Pascal Wiki https://wiki.freepascal.org/Operator_overloading Practical examples of operator overloading in Free Pascal with both record and class operators.

  • "Anonymous Functions" — Free Pascal Wiki https://wiki.freepascal.org/Anonymous_functions Guide to anonymous functions in Free Pascal, including mode switches, capturing semantics, and common patterns.

  • "Class Helpers" — Free Pascal Wiki https://wiki.freepascal.org/Helper Comprehensive guide to class helpers, record helpers, and type helpers with practical examples.

  • Chapter 11: Records and Compound Types — Advanced records with operator overloading are an extension of the basic records covered here.
  • Chapter 17: Inheritance and Polymorphism — Class helpers provide an alternative to inheritance for extending types.
  • Chapter 18: Interfaces and Design Principles — Interfaces and anonymous functions combine for powerful callback architectures.
  • Chapter 20: Generics — Generic types with operator overloading create reusable mathematical types. Anonymous functions are natural with generic algorithms.
  • Chapter 27: GUI Programming — Event handlers in Lazarus are method references, extending the callback patterns from this chapter.
  • Chapter 34: JSON/XML Serialization — RTTI enables automatic serialization of objects to data formats.