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From: Matt J on 24 Feb 2010 17:39
XYZ <junk(a)mail.bin> wrote in message <hm48h0$7lm$1(a)news.onet.pl>...
> On 2010-02-24 21:22, Matt J wrote:

> >> modem.baseclass
> ??? Error using ==> modem.baseclass.baseclass at 9
> This is an abstract class.
===================

That probably means you should be doing

classdef myModFormat < modem.baseclass



> >
> >
> >> How you define whether Matlab class is sealed or not? I could not find
> >> any meaningful help on this.
> >
> > It's a class attribute. If the 1st line in your classdef file looks like
> > the following
> >
> > classdef (Sealed) myClass
> >
> > then myClass cannot be subclassed. See the MATLAB OOP documentation for
> > full details.
No classdef inside any m-file in @modem directory and all subdirectories.
=============

That won't matter in terms of checking whether or not it is sealed. There is no classdef file for @double either. Nevertheless, I can do the following, which shows that class @double is not sealed.


>> ?double

ans =

meta.class handle
Package: meta

Properties:
Name: 'double'
Description: ''
DetailedDescription: ''
Hidden: 0
Sealed: 0
ConstructOnLoad: 1
InferiorClasses: {0x1 cell}
Properties: {[1x1 meta.property]}
Methods: {206x1 cell}
Events: {0x1 cell}
SuperClasses: {0x1 cell}
ContainingPackage: {}
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