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Property declaration, attributes, and access methods.

Properties contain object data. Classes define the same properties for all object, but each object can have unique data values. Property attributes control what functions or methods can access the property. You can define functions that execute whenever you set or query property values. Properties can trigger events when code accesses their values.


properties Class property names
isprop Determine if property of object


dynamicprops Superclass for classes that support dynamic properties
meta.DynamicProperty Describe dynamic property of MATLAB object
event.DynamicPropertyEvent Event data for dynamic property events Describe property of MATLAB class


Define Properties and Set Attributes

How to Use Properties

There are different kinds of properties and each serves a different purpose.

Property Syntax

When you define properties you also specify property attributes that control certain aspects of the property's behavior.

Property Attributes

Attributes control the behavior of properties.

Mutable and Immutable Properties

You can control what code can set property values.

Defining Properties

Classes can assign default values to properties and you can change these values during object construction or direct access to the properties.

Properties with Constant Values

Use a class with Constant properties to define constant values

Properties Containing Objects

Properties assigned objects as default values construct that object only once when the class is first loaded. Also, assignment to contained object properties behaves differently depending on whether the object is a handle or value.

Restrict Class of Properties

You can restrict the class of property values to a specified class.

Property Access Methods

Property Access Methods

Property access methods execute code when property values are referenced or assigned. Implementing these methods enables you to control what actions occur when values are set or queried.

Property Set Methods

Property set methods must follow specific syntax and execution rules.

Property Get Methods

Property get methods must follow specific syntax and execution rules.

Access Methods for Dependent Properties

Dependent properties need access methods because these properties do not store values. Property access methods manage interactions with the dependent properties.

Dynamic Properties

Dynamic Properties — Adding Properties to an Instance

You can add instance data to an object derived from the dynamicprops class.

Access Methods for Dynamic Properties

You can implement what are effectively access methods for dynamic properties.

Dynamic Property Events

You can define listeners for PropertyAdded and PropertyRemoved events on dynamic properties.

Dynamic Properties and ConstructOnLoad

Use the ConstructOnLoad attribute to save and load dynamic properties.

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