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The Common Lisp Object System (CLOS) is the facility for object-oriented programming in ANSI Common Lisp. CLOS is a powerful dynamic object system which differs radically from the OOP facilities found in more static languages such as C++ or Java .
The builder pattern is a design pattern that provides a flexible solution to various object creation problems in object-oriented programming.The builder pattern separates the construction of a complex object from its representation.
Design Patterns: Elements of Reusable Object-Oriented Software (1994) is a software engineering book describing software design patterns.The book was written by Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides, with a foreword by Grady Booch.
In object-oriented programming, objects have methods that can change or use the object's data. Many programming languages use a special word, like this or self , to refer to the current object. In languages that support open recursion , a method in an object can call other methods in the same object, including itself, using this special word.
In particular, an object should avoid invoking methods of an object returned by another method. For many modern object-oriented languages that use a dot as field identifier, the law can be stated simply as "use only one dot". [6] That is, the code a.m().n() breaks the law where a.m() does not.
In object-oriented programming, the singleton pattern is a software design pattern that restricts the instantiation of a class to a singular instance. It is one of the well-known "Gang of Four" design patterns , which describe how to solve recurring problems in object-oriented software. [ 1 ]
Object-Oriented Programming in Common Lisp: A Programmer's Guide to CLOS (1988, Addison-Wesley, ISBN 0-201-17589-4) is a book by Sonya Keene on the Common Lisp Object System. Published first in 1988, the book starts out with the elements of CLOS and develops through the concepts of data abstraction with classes and methods, inheritance, and ...
Object-Oriented Software Construction, also called OOSC, is a book by Bertrand Meyer, widely considered a foundational text of object-oriented programming. [ citation needed ] The first edition was published in 1988; the second edition, extensively revised and expanded (more than 1300 pages), in 1997.