best object oriented design book

inheritance in the design, first assume that you have made a mistake. If you do not make a mistake, try to prove it. (56) as long as inheritance is used in object-oriented design, I have two questions: (1) is the derived class a special type of the thing it inherits? (2) is the base class part of the derived class? (5

frameworks rather than reusable components when creating an inheritance hierarchy. (55) If you use multiple inheritance in the design, first assume that you have made a mistake. If you do not make a mistake, try to prove it. (56) as long as inheritance is used in object-oriented design, I have two questions: (1) i

/objects in your system. Be especially careful about the classes whose names include Driver, Manager, System, and Susystem. Plan an interface instead of implementing an interface. Be careful with classes that define a large number of access methods in public interfaces. A large number of access methods mean that related data and behaviors are not stored in a centralized manner. Be careful with classes that contain too many non-communication behaviors. Another manifestation of this problem is

a unified manner according to the design. (13) do not create all-powerful classes/objects in your system. Be especially careful about the classes whose names include Driver, Manager, System, and Susystem. Plan an interface instead of implementing an interface. (14) Be careful with classes that define a large number of access methods in public interfaces. A large number of access methods mean that related data and behaviors are not stored in a central

is, the top-level classes should share work in a unified manner according to the design. P30(13) do not create all-powerful classes/objects in your system. Be especially careful about the classes whose names include driver, Manager, system, and susystem. P30Plan an interface instead of implementing an interface.(14) Be careful with classes that define a large number of access methods in public interfaces. A large number of access methods mean that re

. The Notice package contains all command objects that process cache update notifications. The factory package contains the c‑factory class, this class generates the corresponding subclass object of the ccommand Class Based on the message header. The program code in the main package uses the ccommand class and the ccommandfactory class, so it inherits the creadcommand class according to the internal command package and internal factory; the class in

1. An important experience for Object-Oriented Design: Anyone who owns the data provides external operations on the data. 2. Object-oriented refining experience: Term refining method. Case:1. Draw circles on the blackboard Through this sentence, it is easy to think of the ob

. During program design, we should always consider the best class design as much as possible, and do not modify it if it is well written. If there is a new demand, we add some classes to meet new requirements, and the original code will not move. It is absolutely impossible to disable the modification. No matter how closed the module is, there will be some changes that cannot be closed to it. Since it canno

. If you do not make a mistake, try to prove it.(56) as long as inheritance is used in object-oriented design, I have two questions: (1) is the derived class a special type of the thing it inherits? (2) is the base class part of the derived class?(57) If you find multiple inheritance relationships in an object-

semantic relationship to model dynamic semantics, the type will be switched during runtime. (50) do not convert the class object into a derived class. Be careful with any Derived classes that only have one instance. (51) If you think you need to create a new class at runtime, take a step back to recognize that you want to create an object. Now, we can generalize these objects into a class. (52) it should b

information in another class (that is, non-communication behavior ).Dependency in a stable direction.(11) make sure that the abstract concept you are modeling for is a class, not just the role played by an object.(12) distribution of system functions in the horizontal direction as much as possible, that is, the top-level classes should share work in a unified manner according to the design.(13) do not crea

a static method, in the same way, we can improve the closure form of the definition:varSingleton = (function(){ varUnique; functiongetinstance () {if(!unique) {Unique=construct (); returnUnique; } } functionconstruct () {varPrivate_member; functionPrivate_method () {}return{//This is the real singleton.Public_member: ", Public_method:function(){} };}) ();This method calls a singleton object:Singleton.getinstance (). Publicmethod ();This will only really create a unique

Copy the codeCode is as follows: /* PHP Object-Oriented Program Design * * PHP5 * * And an array of objects: all belong to the PHP compound type (a variable can store multiple Unit) * * Object than an array of more powerful, not only can store more data, can also be a function of