Class Attributes

指定类素质butes

All classes support the attributes listed in the following table. Attributes enable you to modify the behavior of class. Attribute values apply to the class defined within theclassdefblock.

classdef(Attribute1=value1,Attribute2=value2,...)ClassName...end

For more information on attribute syntax, seeAttribute Specification.

Class Attributes

Attribute Name	Class	Description
`Abstract`	`logical` (default =`false`)	If specified as`true`, this class is an abstract class (cannot be instantiated). SeeAbstract Classesfor more information.
`AllowedSubclasses`	`meta.class`object or cell array of`meta.class`objects	List classes that can subclass this class. Specify subclasses as`meta.class`objects in the form: A single`meta.class`object A cell array of`meta.class`objects. An empty cell array,`{}`, is the same as a`Sealed`class (no subclasses). Specify`meta.class`objects using the`?ClassName`syntax only. SeeSpecify Allowed Subclassesfor more information.
`ConstructOnLoad`	`logical` (default =`false`)	If`true`, MATLAB^®calls the class constructor when loading an object from a MAT-file. Therefore, implement the constructor so it can be called with no arguments without producing an error. SeeInitialize Objects When Loadingfor more information.
`HandleCompatible`	`logical` (default =`false`) for value classes	If specified as`true`, this class can be used as a superclass for handle classes. All handle classes are`HandleCompatible`by definition. SeeHandle Compatible Classesfor more information.
`Hidden`	`logical` (default =`false`)	If`true`, this class does not appear in the output of the`superclasses`or`help`functions.
`InferiorClasses`	`meta.class`object or cell array of`meta.class`objects	Use this attribute to establish a precedence relationship among classes. Specify a cell array of`meta.class`objects using the`?`operator. The fundamental classes are always inferior to user-defined classes and do not show up in this list. SeeClass PrecedenceandDominant Argument in Overloaded Graphics Functions.
`Sealed`	`logical` (default =`false`)	If`true`, this class cannot be subclassed.

Specifying Attributes

Attributes are specified for class members in theclassdef,properties,methods, andeventsdefinition blocks. The particular attribute setting applies to all members defined within that particular block. You can use multiplepropertiesdefinition blocks to apply different attribute setting to different properties.

Superclass Attributes Are Not Inherited

Class attributes are not inherited, so superclass attributes do not affect subclasses.

Attribute Syntax

Specify class attribute values in parentheses, separating each attribute name/attribute value pair with a comma. The attribute list always follows theclassdefor class member keyword, as shown:

classdef(属性名称=表达式, ...)ClassNameproperties(属性名称=表达式, ...) ...endmethods(属性名称=表达式, ...) ...endevents(属性名称=表达式, ...) ...endend

Documentation