Re: empty arrays of objects

[ernst]

HI Jordi,
ah, i understood now the concept of array language...

Well, i dont know whether this is really a bug, because i overwrote
arrayfun and maybe I did something wrong.

Tell me, why does class([]) yield double?

And why does seemingly buitlin-arrayfun not work on objects?

And, above all, why does

octave:28> a=arrayfun(@pn, [])
a = [](0x0)
octave:29> class(a)
ans = double

not lead to some pn-object as 
arrayfun(@pn, [1 2 3]) does? 


Greetings, 

Ernst 

> On 20 May 2013 17:57, ernst <address@hidden> wrote:
>> i found, that arrays have the same class as their members (which I think
>> is very strange):
> Matrices are all of uniform type. The members of arrays are themselves
> arrays. There are no true scalars or members in Octave, instead,
> anything that looks like a scalar is a 1x1 array, and ordinary arrays
> don't nest; [1,[2,3]] is the same as [1,2,3]. Cell arrays do nest and
> can be of heterogenous type.
>
>> This applies also to classes, which are not builtin:
> Because this is an array language. Everything is an array, even things
> that don't look like arrays.
>
>> I found no way, to obtain an empty array of class pn.
> This may be a bug.
>
> - Jordi G. H.
>