Research on ENUM and Its Performance

ENUM及其性能问题研究

The Study on ENUM System and Resolution Service

ENUM系统以及解析服务的研究

Research and Implementation of ENUM -based VoIP Authentication System

基于ENUM技术的VoIP认证系统研究与实现

Project on Handle-based ENUM Technology

基于Handle名字解析系统的ENUM技术解决方案

A type defined(with the enum keyword)to have an ordered set of integer values.The integer values are associated with constant identifiers named in the declaration.Although enum var iables are stored internally as integers they should be used in programs as if they had a distinct data type.

用枚举关键字(enum)定义的一种数据类型，为整数值的有序集合。这些整数值和说明中命名的常数标识符相关联，虽然枚举变量是以整数的形式存储的，但它们可以在程序中使用，就象它们具有独特的数据类型一样。

The enum constants in AllActions are effectively the names of a configured application’s commands.

AllActions中的Enum常量相当于配置的应用程序命令的名称。

Visualization (graphic representation) of C++ class, struct, enum , and typedef as UML classifiers

C++类的可视化（图形化表示），数据类型结构，枚举以及UML分类符的类型定义。

EAz sample code is available showing how to translate database strings to and from EAz enum format.

EAz示例代码可用来显示数据库字符串格式和EAzEnum格式之间如何相互转换。

EAz is an Enum -based authorization extension for Java EE authorization.

EAz是JavaEE授权的基于Enum的授权扩展。

Discussion on ENUM System Frame of and Addressing Resolution

ENUM系统架构及寻址解析的探讨

A Java enum is an arbitrary set of values that are stored in a specific order.

Javaenum是按照特定顺序保存的随意的值集合。

MTK maps the ENUM data type to VARCHAR(255) with check constraint.

MTK将ENUM数据类型映射到带检查约束的VARCHAR（255）。

You don’t have to limit the use of constructors to indirect Enum constructor calls.

不必将构造函数的使用限制为间接Enum构造函数调用。

Code that attempts to use enumerations will fail with a NoClassDefFoundError looking for the java. lang. Enum base class.

尝试使用枚举的代码会失败，在寻找java.lang.Enum基类时出现NoClassDefFoundError。

But, just like Iterable, the Enum class is not present in the JDK 1. 4 class library.

但是，同Iterable一样，在JDK1.4类库中也没有Enum类。

Or, does that make more sense in a class that has a variable of enum type Size?

或者说，在一个拥有枚举类型Size变量的类中做这些更有意义吗？

Studying on ENUM -based Telephone Number Registration and Management Solutions

基于ENUM的电话号码注册管理方案初探

Simple properties are all non-string properties, such as integer, boolean, and enum properties, and only hold a single value.

简单属性全都是非字符串属性（如整数、布尔值及枚举属性），并且只包含单个值。

Being able to run through the values of an enum is nice, but even more important is the ability to make decisions based on an enum’s values.

能够在枚举的值之间移动很好，但是更重要的是根据枚举的值进行决策。

Even bulk operations (such as containsAll and retainAll) should run very quickly if the specified collection is also an enum set.

如果指定的集合也是Enum集，则甚至批量操作（如containsAll和retainAll）也应非常快地运行。

It also generates Java units containing module constants and enum literals defined in the type library.

它还生成Java单元，里面包含类型库中定义的模块常量和枚举标量。

Similarly, you can turn the XSD enumerations into type safe Java enum types, as shown in Listing 6.

同样，可以把XSD枚举转换为类型安全的Javaenum类型，见清单6。

Hence, at the byte code level, there is no connection between Scala enumerations and the enum constructs in Java and C#.

因此，在字节码的层次，Scala枚举和Java，C#中构造的枚举没有任何联系。

Just as with any constant, all references to the individual values of an enum are converted to numeric literals at compile time.

与任何常量一样，对枚举中各个值的所有引用在编译时均将转换为数值文本。

In the process, the developers of Java 5 implemented the Enum and EnumSet and map as an efficient binary entity.

在此过程中，Java5的开发人员实现了Enum和EnumSet，并将其映射为有效的二进制实体。

This includes the conversion of COM enum arguments to Java int variables and the default values for what were optional arguments in COM.

这包括从COMenum参数到Javaint变量的转化，以及那些在COM中的可选参数的缺省值。