Why does ISFIELD always return FALSE when querying a user-defined class in MATLAB 7.7 (R2008b)?

When I use the function ISFIELD on a MATLAB class object, it always returns false, even when I know that the queried property is there.

The class definition includes a property called 'myproperty'

classdef myclass

      properties

          myproperty = 0;

      end

end

When I check the presence of a property as follows:

x=myclass

isfield(x,'myproperty')

ISFIELD always returns a FALSE

 ans =

       0

Answer 1

[MathWorks Support Team]

Using ISFIELD on a user defined MATLAB class is not supported in MATLAB 7.7 (R2008b).

As a workaround, use the following to determine if a property exists for a class:

any(strcmp(properties(x), 'myproperty'))