design strategy books

The strategy mode is a behavioral design pattern that encapsulates the algorithm one at a time and can use one of the algorithms interchangeably at some point. Conceptually, all of these algorithms are doing the same thing, just realizing the difference.MotivationIn development, we often encounter tasks that are conceptually the same, dealing with different methods, for example, using different tax calculat

. println ("\ n \ N "); 17 18 // Liu Bei is happy, remove the second 19 system. out. println ("-------- Liu Bei is happy, remove the second --------"); 20 context = new context (New givengreenlight (); 21 context. operate (); // executes the second tip 22 system. out. println ("\ n"); 23 24 // What should I do if Sun Quan's sub-troops have followed suit? Remove the third 25 system. out. println ("-------- Sun Quan's small army chased, what should we do, split the third --------"); 26 context = n

"Design pattern Refinement" Learning notes (10) ------Strategy (policy) mode GoF : Define a series of algorithms, encapsulate them one by one, and allow them to replace each other. This mode allows the algorithm to vary independently from the customer who uses it. For example, in our system, we need to paint a graphic or a WordArt (such a system is in the real world, a bill output system made by my f

implements strategy{@Override Public voidOperate () {SYSTEM.OUT.PRINTLN ("Paint the Code to red!"); }} class bluepaint implements strategy{@Override Public voidOperate () {SYSTEM.OUT.PRINTLN ("Paint The code to blue!"); }} class Context{ PrivateStrategy strategy; PublicContext (Strategy

Vs 2008 A behavior of a class may have multiple implementation policies. You can extract this behavior and define it as an interface. Then, you can provide multiple implementations of this interface. These classes (Policies) can be replaced with each other without affecting the client.Code. 1. Mode UML diagram 2. Application Examples of discounts for books are divided into general discount prices and gold discount prices. For book sellers, t

same, because of this equality, can be achieved between the algorithm to replace each other. All strategy algorithms are independent of each other in implementation, and are not dependent on each other.So you can describe this series of strategy algorithms: Policy algorithms are different implementations of the same behavior.the uniqueness of the run-time policy------ during the run, the policy mode can on

8.2.1 Strategy Design pattern (the strategy style)At run time, the policy pattern is useful if the application needs to choose between several algorithms, or between different parts of an algorithm. A common scenario is that when our application needs to perform several tasks, it is different only on very small sub-tasks. Using the policy mode, for the common par

Cache Constructors}Public function Get ($key){Ttserver Cache's Get method implementation}Public function set ($key, $value){Implementation of set method for Ttserver cache}Public Function del ($key){Ttserver Cache's Del method implementation}}--The following policies are used without caching------Class Model{Private $_cache;Public Function __construct (){$this->_cache = new NoCache ();}Public Function Setcache ($cache){$this->_cache = $cache;}}Class Usermodel extends Model{}Class Porductmodel e

GOF "design pattern" is described in the strategy mode: Define a series of algorithms that encapsulate them one by one and make them interchangeable with each other. The strategy mode allows the algorithm to vary independently from the customer who uses it. The strategy model is based on the following principles: 1