005.1/2 20 QA76.64.D47 1995 Design Patterns: Elements of Reusable Object-Oriented Software is a book describing. The book's authors are, Richard Helm, and with a foreword. The book is divided into two parts, with the first two chapters exploring the capabilities and pitfalls of object-oriented programming, and the remaining chapters describing 23 classic.

In informatica, gli anti-pattern (o antipattern) sono dei design pattern. Elementi per il riuso di software ad oggetti scritto dalla Gang of Four. Download free design patterns elementi per il riuso di software ad oggetti from our collection.design patterns elementi per il riuso di software ad oggetti free links. Scarica libri di testo da Google Play. Elementi Per Il Riuso Di Software a Oggetti. Design Patterns: Elementi Per Il Riuso Di Software a Oggetti. Provides design patterns to help with software development using the Java programming language. Design patterns: elementi per il riuso di software a oggetti.

The book includes examples in and. It has been influential to the field of software engineering and is regarded as an important source for object-oriented design theory and practice. More than 500,000 copies have been sold in English and in 13 other languages. The authors are often referred to as the Gang of Four ( GoF). Contents • • • • • • • • • • • • • • • • • • History [ ] The book started at a (BoF) session at '90, 'Towards an Architecture Handbook', run by Bruce Anderson, where Erich Gamma and Richard Helm met and discovered their common interest. They were later joined by Ralph Johnson and John Vlissides.

The original publication date of the book was October 21, 1994 with a 1995 copyright, hence it is often cited with a 1995-year, despite being published in 1994. The book was first made available to the public at the OOPSLA meeting held in Portland, Oregon, in October 1994. In 2005 the ACM awarded that year's Programming Languages Achievement Award to the authors, in recognition of the impact of their work 'on programming practice and programming language design'. As of March 2012, the book was in its 40th printing. Introduction, Chapter 1 [ ] Chapter 1 is a discussion of design techniques, based on the authors' experience, which they believe would lead to good object-oriented software design, including: • 'Program to an 'interface', not an ' implementation'.' (Gang of Four 1995:18) •: 'Favor ' over '.'

How To Install Metamod Tf2 Spy. (Gang of Four 1995:20) The authors claim the following as advantages of over implementation: • clients remain unaware of the specific types of objects they use, as long as the object adheres to the interface • clients remain unaware of the classes that implement these objects; clients only know about the abstract class(es) defining the interface Use of an interface also leads to and, which are central features of object-oriented programming. The authors refer to as reuse, with white-box referring to visibility, because the internals of parent classes are often visible to. In contrast, the authors refer to (in which objects with well-defined interfaces are used dynamically at runtime by objects obtaining references to other objects) as reuse because no internal details of composed objects need be visible in the code using them. The authors discuss the tension between inheritance and encapsulation at length and state that in their experience, designers overuse inheritance (Gang of Four 1995:20).