what enum

About enumerationsmost places write enumerations for an enumeration and then an example to start a switch, but I want to say that the data from my code is not likely to be an enumeration, usually a string or a number, such as a SQL I parse first to

This article mainly introduces the Enum (enumeration) usage in PHP, and analyzes in detail the implementation and use of Enum (enumeration) in php based on the instance form, which has some reference value, for more information about how to use Enum

Enum provides a base class for enumeration. The base type can be any integer except Char. If the basic type is not explicitly declared, Int32 is used. Programming Languages generally provide syntax to declare an enumeration consisting of a group of

Tips"Effective Java, third Edition" an English version has been published, the second edition of this book presumably many people have read, known as one of the four major Java books, but the second edition of 2009 published, to now nearly 8 years,

Original address: http://www.cppblog.com/chemz/archive/2007/06/05/25578.htmlTo the beginning of the C language enum type is used as a user-defined method for the finite set constants of the class is introduced into the language, and was once the

This article mainly introduces the Enum (enumeration) usage in PHP, and analyzes in detail the implementation and use of Enum (enumeration) in php based on the instance form, which has some reference value, for more information about how to use Enum

If a variable requires several possible values, it can be defined as an enumeration type. The reason for enumeration is to enumerate the possible values of variables or objects. For example, to make everyone better understand that there is a pen in

Example: public enum EnumTest {        FRANK("The given name of me"),        LIU("The family name of me");        private String context;        private String getContext(){        return this.context;        }  

Enum Basic use：Package com.enumtest;Enum Shrubbery {GROUND, crawling, hanging}public class Enumclass {public static void Main (string[] args) {For (shrubbery s:shrubbery.values ()) {SYSTEM.OUT.PRINTLN (S + "ordinal:" + s.ordinal

Original Enum type enum (for value type) in C #C # supports two special types of values: enumerations and structs.Declare enumeration: Declare all possible values when declaring. Using System; Using System.Collections.Generic; Using

C ++ enum, enumWhy do I need enumeration types? All the features in programming languages are designed to meet certain needs and to achieve a certain purpose. It will not come out of the box. Enumeration can be used to save the values of a set of

The C++11 enumeration type is "Domain" (scoped enum), which has the following advantages over the "non-domain" (unscoped enum) of the C++98 enumeration type:1 namespace pollutionIn general, names that are declared within curly braces are limited by

Java enum (enumeration) and javaenum In actual programming, there are often such "datasets", their values are stable in the program, and the elements in the "dataset" are limited. For example, seven data elements from Monday to Sunday constitute a

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

1. Definition of enum Enum Fabric {Cotton = 1, Silk = 2, Wool = 4, Rayon = 8, Other = 128} 2. Conversion between symbol names and constant valuesFabric fab = Fabric. Cotton; Int fabNum = (int) fab; // convert to a constant value. Mandatory

Enumeration The enumerated type Declaration defines a type name for a group of related symbol constants. Enumeration is used for "Multiple Choices", that isProgramThe runtime is determined by the fixed number of "Choices" that have been set at the

C # Enum, Int, and String mutual conversion enumeration conversion,Enum provides the base class for enumeration.Basic TypeIt can be any integer except Char. If the basic type is not explicitly declared, Int32 is used. Programming Languages generally

Tag: Sep How ber mem val Class A blog pythonEnum type Enum is an important data type, which is a data type rather than a structure, and we usually declare a common set of constants as enumerated types for easy follow-up use. When there are several

In some cases, the object of a class is limited and fixed, such as the season class, it has only 4 objects: Spring, summer, autumn, winter. This example of a finite and fixed class, in Java, is called an enumeration class.1 Manually implementing an

If you need several possible values for a variable, you can be defined as an enumeration type. An enumeration is called a possible value for a variable or an object that may be present, one by one cases are lifted out. Let me give you an example to