creational flyweight pattern class
泛型类 class<T> 语法简单测试
```cs class Program { static void Main(string[] args) { SaySomeThing saySomeThing_Hi = new SaySomeThing(); Console.WriteLine(saySomeThing_Hi.GetObj(). ......
18) Mediator pattern
类别: Behavioral Pattern 问题: encapsulate [ɪn'kæpsjʊleɪt] enclose in a capsule or other small container define an object that encapsulates how a set of o ......
19) Memento pattern
类别: Behavioral Pattern (备忘录模式) 问题: 方案: 示例: import java.util.ArrayList; import java.util.List; public class MementoPatternDemo { public static void mai ......
20) Observer pattern
类别: Behavioral Pattern 问题: 方案1: 示例1: import java.util.ArrayList; import java.util.List; public class ObserverPatternDemo { public static void main(Str ......
23) Strategy pattern
类别: Behavior Pattern 问题: 方案: 示例: public class StrategyPatternDemo { public static void main(String[] args) { Context context = new Context(new Operati ......
24) Template pattern
类别: Behavior Pattern 问题: 方案: 示例: public class TemplatePatternDemo { public static void main(String[] args) { Game game = new Cricket(); game.play(); S ......
25) Visitor pattern
类别: Behavior Pattern visit ['vizit] the act of going to see some person or place or thing for a short time 问题: 方案: 示例: public class VisitorPatternDemo ......
26) MVC Pattern
类别: 问题: 方案: 示例: public class MVCPatternDemo { public static void main(String[] args) { // fetch student record based on his roll no from the database ......
22) Null Object pattern
类别: 问题: 方案: 示例: public class NullObjectPatternDemo { public static void main(String[] args) { Animal animal; animal = getAnimal("cat"); animal.makeSou ......
27) Business Delegate Pattern
类别: 问题: 方案: public class BusinessDelegatePatternDemo { public static void main(String[] args) { BusinessDelegate businessDelegate = new BusinessDelega ......
12) Flyweight Pattern
类别: Structural Pattern 问题/动机: 假若绿色是相同部分,占用1M内存 ,如果提取出来,众对象共享其内容,只占1M内存 ,否则占10M ,且随着对象增多,占用越来越多内存 ,无疑是浪费资源 A flyweight is an object that minimizes memo ......
11) Facade Pattern
类别: Structural Pattern 问题/动机: 系统非常复杂 隐藏复杂细节,提供简单界面 方案: 示例: /* Complex parts */ public class FacadePatternDemo { public static void main(String[] args) ......
13) Proxy Pattern
类别: Structural Pattern 问题: 操纵一个对象时碍手碍脚,与装饰者模式不同之处: 装饰者是接口方法,授权小 代理则是整个类,授权大 方案: 示例: public class ProxyPatternDemo { public static void main(final Stri ......
15) Command pattern
类别: Behavioral Pattern 问题: 方案: 示例: import java.util.ArrayList; import java.util.List; public class CommandPatternDemo { public static void main(String ......
16) Interpreter pattern
类别: behavioral pattern 问题: Polish notation https://en.wikipedia.org/wiki/Polish_notation Abstract syntax tree https://en.wikipedia.org/wiki/Abstract_s ......
17) Iterator pattern
类别: behavioral pattern 问题: Provide a way to access the elements of an aggregate object sequentially without exposing its underlying representation. 方案 ......
14) chain of responsibility pattern
类别: behavioral pattern 问题: 高耦合,不灵活 if(){ }else if(){ }else if(){ } ... 方案: 示例: public class ChainOfResponsibilityPattern { public static void main(Str ......
Vue之使用:class返回类对象
我们在设置动态且复杂的类名时,可以使用Vue的:class。 如下面的代码所示: <i :class="classObject(item)"></i> 函数为: const classObject = (item) => { return { iconfont: true, icon: true, ......
cpp: Visitor Pattern
/*****************************************************************//** * \file Gold.h * \brief 访问者模式 Visitor Pattern C++ 14 行为模式 * 2023年6月8日 涂聚文 Geovi ......
Kettle连接MySQL报错:Driver class 'org.gjt.mm.mysql.Driver' could not be found, make sure the 'MySQL' driver (jar file) is installed
在Windows系统里面安装kettle后打算连接MySQL的时候突然报错 错误连接数据库 [wanghui] : org.pentaho.di.core.exception.KettleDatabaseException: Error occurred while trying to connec ......
Linu环境下替换jar中的class文件
mkdir -p BOOT-INF/classes/com/alibaba/ipi/portal/provider/dubbo/provider/impl cp aa.class BOOT-INF/classes/com/alibaba/ipi/portal/provider/dubbo/provi ......
第十三节 什么是类(Class)
视频链接:刘铁猛老师的《C#语言入门详解》 [https://www.youtube.com/watch?v=EgIbwCnQ680&list=PLZX6sKChTg8GQxnABqxYGX2zLs4Hfa4Ca](https://www.youtube.com/watch?v=EgIbwCnQ68 ......
cpp: Chain Of Responsibility Pattern
/*****************************************************************//** * \file PayrollProcessing.h * \brief 责任链模式Chain Of Responsibility Pattern 亦称: 职 ......
Deep One-Class Classification
# Deep One-Class Classifification Deep SVDD (Deep Support Vector Data Description)训练一个神经网络,最小化包含数据表征的超球的体积(如图1所示) ![image-20230606193307205](https://i ......
cpp: Memento Pattern
/*****************************************************************//** * \file ActorMemento.h * \brief 备忘录模式 Memento Pattern亦称:快照、Snapshot、Memento C++ ......
终端窗口javac编译java文件,java执行class文件注意事项
java代码如下 ```java public class AutoBoxingUnBoxing { public static void main(String[] args) { Integer f1 = 100, f2 = 100, f3 = 150, f4 = 150; System.out ......
compiler expression pattern match
编译器中经常需要用到pattern match。 那么如何实现呢? 比较直观的方法是使用递归。 以pattern match: y= a * (b + c) 为例。 首先,将其解析成一个抽象语法树:* a + b c 其次,递归match: match(y, pattern) => match(y, ......
Codeforces 1737G - Ela Takes Dancing Class(平衡树)
数据结构好题。 先考虑如果 $s_i$ 全是 $1$ 怎么做。考虑一个非常特殊的状态:如果当前最靠左的舞蹈者跳一步就能跳到最靠右的舞蹈者的右边,那么这样的局面性质其实是非常完美的。因为容易归纳证明,这样的局面下,每一步最靠左的舞蹈者跳一步都能跳到最靠右的舞蹈者的右边,这样一来,如果维护出了初始局面下 ......
Failed to instantiate [java.util.List]: Specified class is an interface
原代码没加@RequestParam,一直给我报这个错,传这个List根本不行 ```java @RequestMapping(value = "/searchPhoneInfos2", method = RequestMethod.GET) public CommonResult searchPh ......
3) Singleton pattern
类别: creational Pattern 问题/动机: 反复创建对象开销巨大耗时长消耗内存/重复使用 方案: 示例: // 1 class Demo1 { public final static Demo1 INSTANCE = new Demo1(); private Demo1() { if ......