Class Layout Copyright © 2020 by Stephen C. Dewhurst and Daniel Saks 1 Class Layout Steve Dewhurst Semantics Consulting, Inc. www.stevedewhurst.com 1 Copyright © 2020 by Stephen C. Dewhurst and Daniel Daniel Saks C++ Classes  Only non-static data declarations in a class definition add anything to the size of class objects. class HR { public: ~~~ void terminator(Salary *, Hourly *, Temp *); private: Stephen C. Dewhurst and Daniel Saks 1 7Class Layout Copyright © 2020 by Stephen C. Dewhurst and Daniel Saks 2 sizeof(Class Object)  sizeof applied to the HR class yields the same result as sizeof applied

现�����的方法��为抽象方法� 抽象方法������abstract��� ��抽象方法的类����为抽象类�����abstract��� CODE ± 抽象类示例 1 public abstract class Animal { //定义为抽象类 2 private int age; 4 public void setAge(int age) { 5 this.age = age; 6 } 8 return age; 10 } 12 public abstract void eat(); //抽象方法 13 } 4 29 ����类 CODE ± 抽象类继承 1 public class Person extends Animal { 2 private String name; 3 public void setName(String name) { 4 this.name } 9 public void eat() { //重写方法 10 System.out.println("��→��→���→��→���"); 11 } 12 } 1 public class Bird extends Animal { 2 public void fly(){ 3 System.out.println("我���!"); 4 } 5 public void eat(){

个 时候就必须用到反射——运行时动态加载需要加载的对象。 一个例子 Struts2 框架开发中会在 struts.xml 里配置 Action 1 class="ouc.j2ee.action.LoginAction" method="execute"> 2 index.jsp 3 class 属性创建 LoginAction 的实例，并用 invoke 方法来调用 execute 方法。 这个过程是基于 Java 反射框架完成的。 大纲 反射 类的加载、连接和初始化 类加载器 使用反射生成并操作对象 本节习题 反射的主要用途„ O 依赖注入 有两个组件 A 和 B，A 依赖于 B。 1 public class A { 2 public setB() 方法： 1 public class A { 2 private B b; 3 public void importantMethod() { 4 b.usefulMethod(); 5 ... 6 } 8 public void setB(B b) { 9 this.b = b; 10 } 11 } 1 class="ouc.j2ee.sample

. . . . . . . . . . . . . 346 7.8.4 [Proxy] In Windows environment, could not find or load main class org.apache.shardingsphere.proxy.Bootstrap, how to solve it? . . . . . . . . . . . 346 7.8.5 [Proxy] Reading table information for completion of table and column names │Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A "/api/v2/spans" SAMPLER_TYPE: "const" SAMPLER_PARAM: "1" OpenTracing: props: OPENTRACING_TRACER_CLASS_NAME: "org.apache.skywalking.apm.toolkit. opentracing.SkywalkingTracer" OpenTelemetry: props:

. . . . . . . . . . . 304 7.7.4 4. [Proxy] In Windows environment, could not find or load main class org.apache.shardingsphere.proxy.Bootstrap, how to solve it? . . . . . . . . . . . 304 7.7.5 5. [Proxy] system parameters Add startup arguments -Dorg.apache.shardingsphere.tracing.opentracing.tracer.class=org.apache.skywalking. apm.toolkit.opentracing.SkywalkingTracer Call initialization method ShardingTracer "shardingsphere-agent" URL_VERSION: "/api/v2/spans" #zipkin uri Opentracing: props: OPENTRACING_TRACER_CLASS_NAME: "org.apache.skywalking.apm.toolkit. opentracing.SkywalkingTracer" OpenTelemetry: props:

. . . . . . . . . . . . . 358 7.8.4 [Proxy] In Windows environment, could not find or load main class org.apache.shardingsphere.proxy.Bootstrap, how to solve it? . . . . . . . . . . . 358 7.8.5 [Proxy] version} to the actual version. 3. Edit application.yml. spring: shardingsphere: datasource: names: ds_0, ds_1 ds_0: type: com.zaxxer.hikari.HikariDataSource driverClassName: com.mysql.cj.jdbc.Driver Reading table information for completion of table and column names │Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A

of each case’s code. You use for-in to iterate over items in a dictionary by providing a pair of names to use for each key-value pair. 1 let interestingNumbers = [ 2 "Prime": [2, 3, 5, 7, 11, 13] by following its name with a list of arguments in parentheses. Use -> to separate the parameter names and types from the function’s return type. 1 func greet(name: String, day: String) -> String { 2 y += 5 5 } 6 add() 7 return y 8 } 9 returnFifteen() Functions are a first-class type. This means that a function can return another function as its value. 1 func makeIncrementer()

instantiated for all relevant sets of template arguments, or that is a private implementation detail of a class, is allowed to be defined in the one and only .cc file that instantiates the template. There are where possible. Just #include the headers you need. A “forward declaration” is a declaration of a class, function, or template without an associated definition. • Forward declarations can save compile declared in a header file, always #include that header. • When using a class template, prefer to #include its header file. Please see Names and Order of Includes for rules about when to #include a header.

. . . . . . . . . . . . . . . . . 298 7.14 In Windows environment, could not find or load main class org.apache.shardingsphere.proxy.Bootstrap, how to solve it? . . . . . . . . . . . . . . . 298 7 Sources Configuration Real data sources list. Tables Configuration Configurations of logic table names, data node and table sharding rules. Data Node Configuration It is used in the configurations of it requires to rewrite logic table names in sharding settings into actual table names acquired after routing. Database sharding does not require to rewrite table names. In addition to that, there are also

TEZcgi.Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 540 15.5.13 TEZcgi.Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 541 15.5.14 TEZcgi.Variables . 19TJSONObject.UnquotedMemberNames . . . . . . . . . . . . . . . . . . . . 588 16.16.20TJSONObject.Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 589 16.16.21TJSONObject.Elements . . sysutils ?? 1.2 Overview The ascii85 provides an ASCII 85 or base 85 decoding algorithm. It is class and stream based: the TASCII85DecoderStream (90) stream can be used to decode any stream with ASCII85