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Propiedades

Declaración de propiedades, atributos y métodos de acceso

Las propiedades contienen datos de objetos. Las clases definen las mismas propiedades para todo el objeto, pero cada objeto puede tener valores de datos únicos. Los atributos de las propiedades controlan qué funciones o métodos pueden acceder a la propiedad. Es posible definir funciones que se ejecuten cada vez que se definan o consulten valores de propiedades. Las propiedades pueden activar eventos cuando el código acceda a sus valores.

Funciones

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Información sobre propiedades

`properties`	Class property names
`isprop`	True if property exists

Funciones de validación

Validación de atributos de valor numérico

`mustBePositive`	Validate that value is positive
`mustBeNonpositive`	Validate that value is nonpositive
`mustBeNonnegative`	Validate that value is nonnegative
`mustBeNegative`	Validate that value is negative
`mustBeFinite`	Validate that value is finite
`mustBeNonNan`	Validate that value is not NaN
`mustBeNonzero`	Validate that value is nonzero
`mustBeNonsparse`	Validate that value is nonsparse
`mustBeReal`	Validate that value is real
`mustBeInteger`	Validate that value is integer
`mustBeNonmissing`	Validate that value is not missing

Validación de la comparación

`mustBeGreaterThan`	Validate that value is greater than another value
`mustBeLessThan`	Validate that value is less than another value
`mustBeGreaterThanOrEqual`	Validate that value is greater than or equal to another value
`mustBeLessThanOrEqual`	Validate that value is less than or equal to another value

Validación del tipo de datos

`mustBeA`	Validate that value comes from one of specified classes
`mustBeNumeric`	Validate that value is numeric
`mustBeNumericOrLogical`	Validate that value is numeric or logical
`mustBeFloat`	Validate that value is floating-point array
`mustBeText`	Validate that value is string array, character vector, or cell array of character vectors
`mustBeTextScalar`	Validate that value is single piece of text
`mustBeNonzeroLengthText`	Validate that value is text with nonzero length
`mustBeUnderlyingType`	Validate that value has specified underlying type

Validación de tamaño

`mustBeNonempty`	Validate that value is nonempty
`mustBeScalarOrEmpty`	Validate that value is scalar or empty
`mustBeVector`	Validate that value is vector

Validación de miembros y rango

`mustBeMember`	Validate that value is member of specified set
`mustBeInRange`	Validate that value is in the specified range

Texto con validación de significado especial

`mustBeFile`	Validate that path refers to file
`mustBeFolder`	Validate that input path refers to folder
`mustBeValidVariableName`	Validate that input name is valid variable name

Clases

`dynamicprops`	Superclass for classes that support dynamic properties
`meta.DynamicProperty`	Describe dynamic property of MATLAB object
`event.DynamicPropertyEvent`	Event data for dynamic property events
`meta.property`	Describe property of MATLAB class
`meta.Validation`	Describes property validation
`meta.FixedDimension`	Fixed dimension in property size specification
`meta.UnrestrictedDimension`	Unrestricted dimension in property size specification
`meta.ArrayDimension`	Size information for property validation
`matlab.lang.OnOffSwitchState`	Represent on and off states with logical values

Temas

Definir propiedades y establecer atributos

Ways 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.
Property Access List
Specify a list of classes that can access a property.
Mutable and Immutable Properties
You can control what code can set property values.
Property Definition
Classes can assign default values to properties and you can change these values during object construction or direct access to the properties.
Define Class 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.

Validación de propiedades

Validate Property Values
You can restrict property values to a size and class, and apply functions to validate assigned values.
Property Class and Size Validation
Define class and size requirements for a property.
Property Validation Functions
Property validation functions enable you to check the values being assigned to properties.
Metadata Interface to Property Validation
Programmatically determine the size, class, and validation functions that validate the values assigned to properties.

Métodos de acceso a propiedades

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.
Set and Get 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.

Propiedades dinámicas

Dynamic Properties — Adding Properties to an Instance
You can add instance data to an object derived from the dynamicprops class.
Set and Get 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.