enum class

C # Idioms:enum or enum class (enum Class) Marshine (Original composition format: http://www.marshine.com) Reversion:2004/5/28 Modification Note: Thanks to the CLS compatibility issue mentioned by Ninputer, while modifying the Equals rewrite not

Reference 55049192This explains why an enumeration class cannot be inherited: it has inherited the parent enum class, and its parent implements the serializable interface, which means that all enum classes implement serializationThe Enum class also

1#include 2 3 intMain ()4 {5 enum classcolor:unsignedChar{Red, Green};6 enum classAlert:BOOL{Red, Green};7 8 //Color C; Not initialized9 //Color c{65}; //explicit enumeration range, but within unsigned char rangeTen //Color c{

Public Abstract classEnumextendsEnum>ImplementsComparable, Serializable {Private FinalString name; //Current enumeration constant name Public FinalString name () {returnname; } Private Final intordinal; //Current enumeration constant

Sometimes, the value of a variable is only within a finite set.For example: the size of the pizza is only small, medium, large and oversized in these four sizes. Of course, these dimensions can be encoded as 1, 2, 3, 4, or S, M, L, X, respectively.

I. Grammar1. Enum is all called enumeration, Chinese is commonly known as enumeration class, learn C + + and other languages of the people, should be to it knows. In the Java language Specification, however, it was introduced in the JDK version 5

Enum Enum class 1.values ()Description: The values () method returns a collection of enumeration classes that do not exist in the Enum class and are added by the compiler dynamically. 2.valueOf ()Description: valueof () returns an object of the

Learn from teacher Wang Enumeration (iii): Enumeration APITeacher: Wang Shaohua QQ Group No.: 483773664First, enumerate the class APIThe enumeration classes declared in Java are children of the Java.lang.Enum class that inherit all the methods of

1. Use an extension method to use an enumeration value for the Description property value Public Static classenumextenstion{ Public Static stringGetdescriptionname ( ThisEnum Enumvalue) {Object[] attr =Enumvalue.gettype (). GetField

With the effective Java this book to see more and more, found in peacetime use of Java made a lot of obvious mistakes, they usually know a little but the lack of use is also more and more.As for enumeration classes, the suggestion in the book is to

There's something new in the enumeration class in Kotlin: The constant of an enumeration class can be seen as an anonymous class with the same name.Since it is a class, it can be associated with a methodCheck the code of the official websiteIf you

Enumeration definition:An enum is a data type in a computer programming language. Enumeration types: In real-world problems, some variables are scoped to a limited range . For example, there are only seven days in one weeks, 12 months in a year, six

This article is taken from the csdn forum post Q: Question The tostring () method of the enum class can be different from several parameters, such:Enum. tostring ("D ");Enum. tostring ("N ");Enum. tostring ("G ");Enum. tostring ("F ");What do

Enum class (msdn) Posted on ottox read (92) Comments (0 ){Open_link ('HTTP: // www.cnblogs.com/ottox/admin/editposts.aspx? Postid = 1402424 ')} "Rel =" nofollow "href =" http://writeblog.csdn.net/# "> edit {Addtowz( 1402424); Return false;} "Href ="

The enumeration classes are new after Java 5, can be used to encapsulate constants, and can also provide some methods for the use of constants.Defines the syntax for an enumeration class: Public enum enumname{ //must be placed on the

Figure A code:public enum Logmethodenum {Webcscardvalid ("return value"),Webcsverifypassword ("return value"),Webcssavepassword ("return value"),Webcssetpassword ("return value"),Webcsquerytotalbalance ("return value"),Webcsquerycarddetail ("return

Unlike an unscoped enumeration, a scoped enumeration are not implicitly convertible to its integer value. You need to explicitly convert it to an integer using a cast:Std::cout ::type> (A) Want to encapsulate the logic into a function

An enum class has been added to the JDK1.5 that can be used to map to database tables. And it's very convenient to implement. Here's an example: Development environment: JDK 1.6 U2 Eclipse 3.3 There is a table in the database: Useruser It has

This model is built in models, in which the method of obtaining an enumeration class is writtenDo not pirated, reproduced please add the source Http://blog.csdn.net/yanlintao1Class Student extends zend_db_table{protected $_name = ' student

I. Overview An enum, called enumeration, is a new feature introduced in JDK 1.5 and is housed in a Java.lang package. creating an enumeration type to use the enum keyword implies that the type created is a subclass of the Java.lang.Enum class