responsibility pattern chain cpp
[Vue warn]: Error compiling template: Component template should contain exactly one root element. If you are using v-if on multiple elements, use v-else-if to chain them instead.
##报错信息: [Vue warn]: Error compiling template: Component template should contain exactly one root element. If you are using v-if on multiple elements, ......
QT构建报错error: multiple target patterns
# QT构建报错error: multiple target patterns ## 原因 之前一直没有出过问题,但是在我修改了cmd的默认编码后,该问题出现了。原因就是使用`chcp 65001`命令修改cmd编码的方式每次会在命令行中输入`Active code page: 65001`这句话, ......
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 ......
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 ......
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) ......
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 ......
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 ......
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 ......
golang导入私有仓库报错:“server response: not found:xxx: invalid version: git ls-remote -q origin in xxx“
1.问题:go get导入私有仓库报错 ➜ go get "devops.gitlab.xxx.com/test/kafka-utils" go: devops.gitlab.xxx.com/test/kafka-utils@v0.0.1: verifying go.mod: devops.gitl ......
【CPP】通过指针编译访问类成员
前置知识:[内存对齐](https://www.cnblogs.com/jian-lh/p/17431965.html "内存对齐") 首先定义一个简单的结构体 ``` struct mCls { int a; int b; double c; }; ``` 当我们使用指针获取到了该类型的一个实例 ......
cpp: Chain Of Responsibility Pattern
/*****************************************************************//** * \file PayrollProcessing.h * \brief 责任链模式Chain Of Responsibility Pattern 亦称: 职 ......
Flask Response
# Flask Response ### response **服务端向客户端发送的响应** ### 响应的几种方式 ``` 1.返回字符串(不常用) return 'response OK!' 2.模板渲染 (前后端不分离的情况) from flask import render_template ......
docker: Error response from daemon: could not select device driver "" with capabilities: [[gpu]].
docker 19之后的版本 1. nano nvidia.sh sudo curl -s -L https://nvidia.github.io/nvidia-container-runtime/gpgkey | \ sudo apt-key add -distribution=$(. /etc/ ......
cpp: Memento Pattern
/*****************************************************************//** * \file ActorMemento.h * \brief 备忘录模式 Memento Pattern亦称:快照、Snapshot、Memento C++ ......
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, ......
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 ......
4) Builder Pattern
类别: Creational pattern 问题: 构造函数入参超长易变 方案: 示例: public class BuilderPatternDemo { public static void main(String[] args) { Car.Builder builder = new Car ......
5) Prototype Pattern
类别: Creational Pattern 问题: 不想修改原对象状态,但需要依据当前数据进行计算 方案: 示例: public class PrototypePattern { public static void main(String[] args) { Movie movie = new ......
6) Adapter Pattern
类别: Structural Pattern 问题: 什么是接口?按照标准提供服务,其他想要使用该接口的要按照该标准接入服务 什么是依赖?持有目标对象,拥有使用权(A use B) 数据线?数据线按USB标准接入充电宝,通过lightning 提供充电服务 手机?通过lightning标准接入数据线 ......