res = isprop(h, propertyname)
res = isprop(obj, propertyname)
res = isprop(objArray, propertyname)
res = isprop(className, propertyname)
| Parameter | Description |
|---|---|
| h | a handle object |
| obj | a classdef object |
| className | a class name as a string |
| propertyname | a string |
| Parameter | Description |
|---|---|
| res | a logical scalar, or a logical array with the same size as the object array |
isprop returns logical 1 if the property is defined for the object or class and logical 0 otherwise.
For classdef object arrays, the result has the same size as the object array.
For classdef classes, isprop can report private and protected properties as existing. Use properties to list public properties.
clear classes
d = [tempdir(), 'nelson_help_isprop/'];
mkdir(d);
filewrite([d, '/NelsonHelpIsPropCounter.m'], ["classdef NelsonHelpIsPropCounter < handle"; " properties"; " Count = 0"; " end"; " properties (Access = private)"; " Secret = 1"; " end"; "end"]);
addpath(d);
a = NelsonHelpIsPropCounter();
b = NelsonHelpIsPropCounter();
tf = isprop([a, b], 'Count')
tfPrivate = isprop([a, b], 'Secret')
publicNames = properties([a, b])
delete([a, b])| Version | Description |
|---|---|
| 1.0.0 | initial version |
| 2.0.0 | classdef class name support added |
| 2.0.0 | classdef object array support added |