I think the debugger is fooling Antun. When it prints an 'anonymous
object' it prints only a summary of the object. (I filed a bug that
it should put '...'s in the summary to indicate that it is not the
whole truth.
But I never got an answer from Antun to my questions and I don't have
his test case to try myself.
If Antun has a use-case for canvas.datasets, we can keep it. It just
seemed there were so many different places datasets were hooked into
the app, I didn't know we needed this one too.
On 2007-03-26, at 14:52 EDT, John Sundman wrote:
Was there an answer to Antun's question -- What SHOULD
canvas.datasets mean? (And can we assume that it will stick around,
or is it likely to go away?)
jrs
On Mar 14, 2007, at 8:32 AM, P T Withington wrote:
On 2007-03-13, at 18:01 EDT, Antun Karlovac wrote:
Can someone explain what canvas.datasets *should* be? It gives me
two conflicting responses. I found an earlier email thread
between Tucker and Adam saying that canvas.datasets *might* be
deprecated at some point.
I think this was prompted by the fact that datasets are named in
so many places it is easy to leak them. Do you need to have a
list of all your datasets?
I have two datasets in the canvas, and a number nested elsewhere
in my application. In the debugger, I type:
LZX> canvas.datasets
... and I get the following response:
«Object#7| {canvas_two_ds: LzDataset :canvas_two_ds,
canvas_one_ds: LzDataset :canvas_one_ds}»
What happens if you inspect this in the debugger (click on it)?
Also try `Debug.showInternalProperties = true` and inspecting. I
think you may be being fooled by the debugger printing an
abbreviated representation of the object. You have to inspect the
object to see all its members.
OK. Two datasets. So canvas.datasets is an object that contains
references to all the datasets that are immediate children of the
canvas.
Now I do:
for (var i in canvas.datasets) {
Debug.write(canvas.datasets[i]);
}
... which gives me *all* the datasets in my app; not just the
ones in the canvas;
«LzDataset#0| <child_five_ds><root/></child_five_ds>»
«LzDataset#1| <child_four_ds><root/></child_four_ds>»
«LzDataset#2| <child_three_ds><root/></child_three_ds>»
«LzDataset#3| <child_two_ds><root/></child_two_ds>»
«LzDataset#4| <child_one_ds><root/></child_one_ds>»
«LzDataset#5| <canvas_two_ds><root/></canvas_two_ds>»
«LzDataset#6| <canvas_one_ds><root/></canvas_one_ds>»
Which should canvas.datasets mean? If it means *all* the datasets
in the app, then can I rely on that, or are there plans to remove
it soon?
What should I file this bug as (if it is a bug)?
Thanks,
Antun
