Re: help understanding package/class/function references

[John W. Eaton]

On 2/15/19 1:11 PM, Nicholas Jankowski wrote:
> On Fri, Feb 15, 2019 at 12:41 PM John W. Eaton <address@hidden 
> <mailto:address@hidden>> wrote:
>
>     Could someone run the following test in a recent version of Matlab?
>
>
> Matlab 2018b:
>
>  >> apkg.cls.smeth
> ans =
>    struct with fields:
>      f: 'cls'
>  >> apkg.cls.smeth.f
> ans =
>      'cls'

So the result of calling a static method may be further indexed?  That's 
a bit of a surprise.

>  >> apkg.fcn
> ans =
>    struct with fields:
>      f: 'fcn'
>  >> apkg.fcn.f
> Undefined variable "apkg" or class "apkg.fcn.f".

I'm not sure I understand how this error happens.  Is it because the 
package "apkg" is found but since "fcn" is not the last element of the 
"." index chain Matlab doesn't even look for a function called "fcn"? 
Instead, the only valid things would be for "apkg" to be a variable or 
"fcn" to name another package or a class?  In that case, we have to 
examine fcn.m to determine whether it defines a classdef object.

jwe