Written by one of the best known object-oriented practitioners in the business, Process Patterns is based on proven, real-world techniques. Scott Ambler shows readers how to successfully deliver large-scale applications using object technology and carefully describes how one develops applications that are truly easy to maintain and to enhance.
He shows how such projects can be supported and points out what is necessary to ensure that one's development efforts are of the best quality. His object-oriented software process OOSP is. The Complete Guide to Writing Maintainable, Manageable, Pleasing, and Powerful Object-Oriented Applications Object-oriented programming languages exist to help you create beautiful, straightforward applications that are easy to change and simple to extend.
Unfortunately, the world is awash with object-oriented OO applications that are difficult to understand and expensive to change. Practical Object-Oriented Design, Second Edition, immerses you in an OO mindset and teaches you powerful, real-world, object-oriented design techniques with simple and practical examples.
Sandi Metz demonstrates how to build. This allows us to step throughalternative design choices, and to provide a narrative aspect to ourdiscussion that we believe increases interest in what can be a somewhat drytopic!
The presentation in the bookis example-driven. The text presents a feature by showing examples of the kindsof programming problems the feature is supposed to help solve, and then shows howto use the feature in programs to solve the problems discussed.
Stan : In a film production, the team concept is essential. When it works, the team jellstogether, each augmenting the work of the other, producing an end resultbeyond the reach of any of the individuals.
I believe this happened in theco-authorship between JosEe and myself. JosEe : Writing a book is a lot of work. There are moments of dreadfulloneliness when one wonders what to do with a piece of text. Having a co-authormakes those moments easier because it gives you someone with whom you can sharethe work, with whom you can bounce ideas.
I think I was particularly luckybecause Stan and I got along really well. So this co-authorship experience wasactually a lot of fun. I could never have come up with a book as good as thisone on my own. Stan : I would add a 'member assignment list' to the class copy assignmentoperator.
Without it, the compiler cannot guarantee to invoke the copyassignment operator of a virtual base class only once. The details of thisissue are touched on at the end of Section 5. JosEe : I would not change anything. What I want now is stability, not change. Stan : Virtual base classes. They complicate everything necessary tosupport theimplementation of a class. JosEe : Templates.
It is not possible to implement templates well usingtraditionalcompiler technology. Templates require that some additional tool be present withthe compiler to manage template instantiations at the level of the entireprogram. It is difficult to correctly and efficiently implement this additionaltool which can be a simple prelinker, or, in the most complex systems, a veryelaborate development environment.
Stan : In terms of runtime program error, not being aware of when anexplicit copyconstructor and copy assignment operator is required as well as when itis not. We step through this in detail, with many programming examples,both in Chapter 14 and in Chapter 17 illustrating the design of anObject-Oriented class hierarchy. In terms of correct but inefficient programming, it is not being aware ofthe locality of declaration rule with regard complex class objects complexclass objects have an associated constructor and destructor.
While theprogram executes correctly, it can be significantly slower. This isgenerally a fault of experienced C programmers because in C all objects mustbe defined prior to any program statements. This is explained andillustrated in Chapter 5. JosEe : The mistakes encountered really depend on the background of theprogrammers we consider.
They declare alltheir objects at the beginning of a block, they do not use classes effectively topackage their program data with the functions that manipulate this data, they useswitch statements instead of virtual functions. The first chapters of the bookwill not be of great interest to programmers with a C background. Parts IV and Von object-based and object-oriented programming discuss topics and design issuesnew to C programmers.
These topics are discussed in Chapter 3 on basic data types, andagain in Chapter 8 on object lifetime. I like to think of the two texts as bookends. Iterators, introduced in Chapter 6, are discussed further in Chapter 12 because they provide the glue that binds the generic algorithms to the actual containers.
The concept of a function object is also introduced and illustrated. Function objects allow us to provide alternative semantics for operators used with the generic algorithms, such as the equality or the less-than operator. The algorithms themselves are detailed, with an illustration of their use, in the Appendix.
Chapters 13 through 16 Part IV focus on object-based programming -- that is, the definition and use of the class facility to create independent abstract data types. The types fundamental to the application can be implemented once and reused, allowing the programmer to concentrate on the problem rather than the details of the implementation. Facilities for encapsulating the data can dramatically simplify subsequent maintenance and evolution of our applications.
Chapter 13 focuses on the general class mechanism: how to define a class, the concept of information hiding -- that is, of separating the public class interface from the private implementation -- and how to define and manipulate object instances of a class, as well as a discussion of class scope, nested classes, and classes as namespace members.
We also look at the issue of memberwise initialization and copy, in which one class object is initialized or assigned with another object of its class, and the special named return value optimization for the efficient support of memberwise initialization and copy. Chapter 15 looks at class-specific operator overloading, first presenting general concepts and design considerations and then looking at specific operators, such as the assignment, subscript, call, and class-specific new and delete operators.
The notion of a friend to a class with special access permission and why friends are sometimes needed is also presented. User-defined conversions are then discussed, including the underlying concepts and an extensive example of their use. The rules for function overload resolution are also discussed in this chapter in some detail, with extensive illustration by code examples. Class templates are the topic of Chapter A class template is a prescription for creating a class in which one or more types or values are parameterized.
A vector class, for example, may parameterize the type of element it contains. A buffer class may parameterize not only the type of element it holds but also the size of its buffer. In a more sophisticated usage, such as in distributed computing, the IPC interface, addressing interface, and synchronization interface might all be parameterized. This chapter includes discussions on how to define a class template, how to create specific type instances of a class template, how to define the members of a class template member functions, static members, and nested types , and how to organize our programs using class templates.
It concludes with an extended class template example. Rather than reimplement shared characteristics, a class inherits the data and operations of its parent class. The child class, or subtype, programs only its differences with its parent class. For example, we may define a parent Employee class type and two children: TemporaryEmpl and Manager. These subtypes inherit all the behavior of an Employee. They implement the behavior that is unique to each of their respective types.
A second aspect of inheritance, spoken of as polymorphism , is the ability of a parent type to refer to any of the subtypes that are inherited from it. An Employee, for example, can address its own type or that of TemporaryEmpl or Manager. Dynamic binding is the ability to resolve at run-time which operation to execute based on the actual type of the polymorphic object. Chapter 17 introduces the basic features of object-oriented programming. It walks through the design and implementation of a Query class hierarchy in support of the text query system we began implementing in Chapter 6.
Chapter 18 introduces the more-complicated inheritance hierarchies that are made possible through multiple and virtual inheritance. It extends the template class example of Chapter 16 into a three-level class template hierarchy using multiple and virtual inheritance.
Chapter 19 introduces the run-time type identification RTTI facility. RTTI allows our programs to query a polymorphic class object as to its type during execution of the program. For example, we can ask an Employee object whether it actually addresses a Manager type. Want to Read Currently Reading Read.
Pdf; free downloads c footprint and performance optimization sams professional. There are various methods present in agile testing, and those are listed below: scrum. Scrum is an agile development method which concentrates specifically on how to manage tasks within a team-based development environment. Basically, scrum is derived from activity that occurs during a rugby match. The agile modelling method defines a collection of principles and practices for effective modelling and for diminishing documentation efforts.
Related Resources Overview The Object Primer is a straightforward, easy-to-understand introduction to agile software development ASD using object-oriented OO and relational database technologies. During the s, OO superceded the structured paradigm as the primary technology paradigm for software development.
Now during the s ASD is superceding traditional, prescriptive approaches to software development. While OO and ASD are often used to develop complex systems, learning them does not need to be complicated. This book is different than many other introductory books about these topics—it is written from the point of view of a real-world developer, someone who has lived through the difficulty of learning these concepts. Chapter 1: Introduction.
Maturing Usability pp Cite as.
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