【Replace Type Code With Class和Replace Type Code With Subclass和Replace Type Code With State/Strategy】的更多相关文章

Replace Type Code With Class和Replace Type Code With Subclass和Replace Type Code With State/Strategy

周末闲来写写看书总结,今天写<重构>中的3个重要手法,分别是Replace Type Code With Class.Replace Type Code With Subclass和Replace Type Code With State/Strategy. 1.Replace Type Code With Class 重构前的主体代码如下: package nelson; public class Person { public static final int O = 0; public…

Multiple annotations found at this line: - The content of element type "mapper" must match "EMPTY". - Attribute "namespace" must be declared for element type "mapper".

今天在mybatis的mapper映射配置文件中遇到了这样的问题,困扰了我3个小时: Multiple annotations found at this line: - The content of element type "mapper" must match "EMPTY". - Attribute "namespace" must be declared for element type "mapper". 代码如下…

解决MVC EF Code First错误:Model compatibility cannot be checked because the EdmMetadata type was not included in the model.

Model compatibility cannot be checked because the EdmMetadata type was not included in the model. Ensure that IncludeMetadataConvention has been added to the DbModelBuilder conventions. 分析: 碰到此错误是由于使用了EF Code First来生成数据库,生成数据库之后又修改了模型. 两种解决方式: 1.在Glo…

No enclosing instance of type is accessible. Must qualify the allocation with an enclosing instance of type LeadRestControllerTest (e.g. x.new A() where x is an instance of ).

java - No enclosing instance is accessible. Must qualify the allocation with an enclosing instance of type (e.g. x.new A() where x is an instance of ) - Stack Overflow https://stackoverflow.com/questions/47541459/no-enclosing-instance-is-accessible-m…

解决：function in namespace ‘std’ does not name a type + allocator_/nullptr/dellocator_ was not declared + base operand of ‘->’ has non-pointer type ‘std::vector<cv::Mat>’ 错误编译时报错（caffe）

解决方法,用到了c++11,g++命令需要加上-std=c++11选项 附:g++默认的c++标准 gcc-6.4.0 gcc-7.2.0 默认是 -std=gnu++14gcc-4.3.6 gcc-4.4.7 gcc-4.5.4 gcc-4.6.4 gcc-4.7.4 gcc-4.8.5 gcc-4.9.4 gcc-5.4.0 默认是 -std=gnu++98gcc-3.0.4 gcc-3.1.1 gcc-3.2.3 gcc-3.3.6 gcc-3.4.6 gcc-4.0.4 gcc-4.1.…

"errcode":40163,"errmsg":"code been used...报错，做PC微信登录时出现code been used...报错问题

这是一个坑,一个巨坑,一个恶心的坑 出现这个问题的大概意思就是微信回调了两次登录接口,code使用了两次,而在微信官方文档上写着code只能用一次,用来获取access_token,但我TM看着就糊涂了,只能使用一次,你他妈干嘛回调两我接口. 问题是这样出现滴:我做的是pc微信登录,第一步在java后端我拿到了生成微信登录的code_uri,在页面生成了一个微信登录二维码. 第二步:然后我用手机微信扫描二维码,确认用微信登录.然后微信就会回调我的登录接口传一些参数过来,好让我用这些参数拿到微信用…

【机器学习 Azure Machine Learning】使用VS Code登录到Linux VM上 (Remote-SSH), 及可直接通过VS Code编辑VM中的文件

问题描述 在平常的工作习惯中,如果使用VS Code做脚本的开发,是一个非常好用的工具,现在也可以通过VS Code的不同方式来连接到Linux VM中(ssh), 第一种是VS Code的Terminal中通过powershell窗口使用ssh命令登录.另外一种就是通过插件remote-ssh登录并管理Linux VM机器(非常方便的小工具,也是本文采用的方式). 当SSH连接成功后,可以直接在VS Code中直接打开VM中的文件夹,运行脚本及编辑文件.非常方便. 实现步骤 1)通过使用SSH…

The difference between a bad programmer and a good one is whether he considers his code or his data structures more important. Bad programmers worry about the code. Good programmers worry about data

重构:改善饿了么交易系统的设计思路 原创: 盛赫 阿里巴巴中间件 昨天…

orcle自定义类型type/create or replace type

一.type / create or repalce type 区别联系 相同: 可用关键字create type 或者直接用type定义自定义类型, 区别: create type 变量 as table of 类型 -- create type 变量 as object( 字段1 类型1, 字段2 类型2 ); -------------------------- type 变量 is table of 类型 -- type 变量 is record( 字段1 类型1, 字段2 类型2 );…

6.Type and Member Basics

1.The Different Kinds of Type Members 1.Constants:a symbol that identifies a never-changing data value.Constants are always associated with a type, not an instance of a type. Logically, constants are always static members 2.Fields:represents a read-o…