design strategy books

Design Patterns in PHP--strategy mode

　　The strategy mode of PHP design mode

5 permit 12.1.2.0/30 (external line two routes)!Route-map Redis_conn Permit 10Match Interface serial1/0 SERIAL1/1Route-map Dist_out2 Permit 10Match IP address prefix-list dist_out2!Route-map Line2 Permit 10Match IP address prefix-list line2!Route-map line1 Permit 10Match IP address prefix-list line1!ISP (R2) Config: (ISP configuration is very simple, basically do nothing, actually, the user has what needs, preferably in the CE above, PE on the requirements to meet the situation, as far as possi

/********************************************************************* Name: touchscreen.c* Author: d* Time: 2015.11.23* function: * Touch screen driver, because the MINI2440 uses a first-line touch, and not four-wire resistive touch, touch screen * drive is not available. ********************************************************************//***************************************** Macro Definition ********************************************************************/#define Intmsk ((* (volatile

(); Mgreenheadduck.fly (); Mgreenheadduck.quack (); Mgreenheadduck.swim (); System.out.println ("******redheadduck******"); Mredheadduck.display (); Mredheadduck.fly (); Mredheadduck.quack (); Mredheadduck.swim (); System.out.println ("******after change******"); Mredheadduck.setmflybehavior (new Noflybehavior ()); Mredheadduck.fly (); Mredheadduck.setmquackbehavior (new Noquackbehavior ()); Mredheadduck.quack ();}}OutputGreenheadduck******--redheadduck----Good flybehavior----GaGa----I ' m swim

Wiredquackbehavior:iquack {public string duckquack () {return "It ' s sounds like Wired annimal"; }} public class Cantquackbehavior:iquack {PubliC String Duckquack () {return "no sounds"; }} public class Duck {IFLY F; Iquack Quack; Public Duck () {f = new normalfly ();//The algorithm required to instantiate in the constructor quack = new Quackbehavior (); } public void Setfly (IFLY fly) {f = fly;//dynamically set the required algorithm} public string Duckfly (

Brief introduction The policy pattern defines the algorithm families, which are encapsulated separately so that they can be replaced by each other. This pattern allows the algorithm to be independent of the client using it and change independently. Composition Abstract policy role: A policy class, usually implemented by an interface or abstract class. Specific policy role: wrapping the relevant algorithms and behaviors. Environment role: holds a reference to a policy class that is eventually cal

TheStrategyPattern is a designPattern to encapsulate the variants (algorithms) and swap them strategically to alter system behavior without changing its architecture. According to gof,StrategyPattern is intended,Define a family of algorithms, encapsulate each one, and make them interchangeable.Strategy lets the algorithm vary independently from clients that use it. StrategyPattern has three participant ipants that includeStrategy, concreteStrategy and context.

From: NetEase Cloud classroom-hit-Q teacher1. Violence AestheticsQuestion 1: The problem of the satisfaction of Boolean expressions (NP-complete problems)Solution 1. The complexity of time is 2^n.question 2.8 Puzzle questionSolution 2. Convert to tree search problem, generate solution space for possible moving resultsQuestion 3: Hamiltonian ring Problem (NP complete problem)Solution 3. From the origin, generate the solution space for the points that may be accessed, and from each accessible poin

is the root of the sub-tree is the solution of the problem, if not contain the solution of the problem, then discard the subtree of the search, back to the upper parent node, Continue to the next deep-first search process.In backtracking, it is not a priority to construct the whole state space tree, then search, but in the search process, gradually constructs a state space tree, that is, edge search, edge construction.Use of backtracking methods:(1). Determine the problem state structure;(2). A

Policy mode: A policy pattern is an object's behavior pattern, intended to encapsulate a set of algorithms. Dynamically select the desired algorithm and use it. 　　　 A strategy pattern refers to a pattern in a program that involves decision control. The policy pattern is very powerful because the core idea of the design pattern itself is the idea of the object-oriented programming of multiple forms. 　　　

{public:void quack() { printf("Quack\n"); }};class MuteQuack:public QuackBehavior{public:void quack() { printf(" }};class Squeak:public QuackBehavior{public:void quack() { printf("Squeak\n"); }};class Duck{public:virtual ~Duck() { delete m_pFlyBehavior; delete m_pQuackBehavior; }virtual void display() = 0;void performFly() {if (NULL !=m_pFlyBehavior) { m_pFlyBehavior->fly(); } }void perfromQuack() {if (N

! Income = 4500.00,tax = 30.0000! Income = 1986.00,tax = 0.0000! Advantages: 1, the hierarchy structure of the policy class defines an algorithm or a behavior family, the proper use of inheritance can move the common code into the parent class, thus avoiding duplicate code;2, inheritance can handle a variety of algorithms or behavior, you can avoid the use of multiple conditional transfer statements. Disadvantages: 1, the client must know all the policy classes, and decide which policy class to

Recently, Baidu's strategy update, let the Internet on a "focus on the content of the construction" of the voice, Webmasters began to discuss how to build a good site, how the site design to feed the spider's appetite? Small series is also studying how to surprise the website design, in order to cater to the new Baidu strateg