枚举

表示单个类型的值的固定名称集

使用枚举表示一组固定的命名值，其中所有值的类型都相同。您可以从其他类（例如内置的数值类型）派生枚举类。然后，枚举成员会继承超类的算术和排序运算。

函数

`enumeration`	类枚举成员和名称
`isenum`	确定变量是否为枚举

meta.EnumeratedValue 描述 MATLAB 类的枚举成员

Named Values
Associate values with predefined names using constant properties or enumeration classes.
定义枚举类
通过在 classdef 文件中创建枚举代码块来定义枚举类。
Refer to Enumerations
Refer to enumeration members using the class name and the member name.
枚举的运算
对枚举使用逻辑、集合关系和字符串比较等运算。
Enumeration Class Restrictions
Enumeration classes restrict certain aspects of their use and definition.
Mutable Handle vs. Immutable Value Enumeration Members
Use a handle enumeration to enumerate a set of objects whose state can change over time. Use a value enumeration to enumerate a set of abstract (and immutable) values.
Save and Load Enumerations
The type of enumeration class determines the information MATLAB^® saves with the class.
Hide Enumeration Members
Hiding enumeration members enables you to replace enumeration names without creating incompatibilities.

Enumerations Derived from Built-In Classes
Enumeration classes derived from built-in types inherit behaviors from these types.
Enumerations That Encapsulate Data
Define properties in an enumeration class to associate specific data with enumeration members.
Enumerations for Property Values
Use enumeration classes to restrict properties to a predefined set of values.