Jeremy,
Depends on which version you are using. If you are in v17 then 'arrays in
objects' are essentially gone. They are collections now and you can use dot
notation with collections.
Otherwise, yes 'arrays' are still arrays within the object.
It's possible to mix the nomenclatures in v17. You _can_ define an object
as use OB SET ARRAY but there is no advantage to doing so. It's much better
to use collections.
C_OBJECT($o)
$o:=New object
$o.array:=New collection
$o.array.push(1) // $o: {array: [1]}
$x:=$o.array[0] // $x = 1
If you have some array of longints you want to append you can call OB SET
ARRAY($o;”array”;$arrayOfLongs) without an error and it will be a
collection.
You could also call ARRAY TO COLLECTION($o.array;$arrayOfLongs)
On Mon, Jun 10, 2019 at 11:37 AM Jeremy Roussak via 4D_Tech <
[email protected]> wrote:
> Are arrays within objects rather second-class properties? I know that I
> can put an array into an object using OB SET ARRAY, and I can retrieve it
> (all of it) using OB GET ARRAY, but is that all?
>
> Can I use dot notation to refer to the arrays themselves, or to individual
> elements of the array?
>
> C_OBJECT($o)
>
> $o:=New object
> OB SET ARRAY($o;”array”;$arrayOfLongs)
>
> $o.array{1} - error
> $o.array - error
> $o[“array”] - error
>
--
Kirk Brooks
San Francisco, CA
=======================
What can be said, can be said clearly,
and what you can’t say, you should shut up about
*Wittgenstein and the Computer *
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