The bracket syntax always gets you what is the value at the given location, whether it's a linear list or a property list.
Yes, you have to use getPropAt, to get the property, then you can use that property to get the value.
Using your example, if you do a:
theProp = getPropAt(vpl, 1)
theProp is assigned "TB199".
Then you can use that to get the value:
put vpl[theProp]
you get [135, 137, 0, 0, 0, 0]
Irv
At 12:41 PM -0400 7/1/03, Kerry Thompson wrote:
I'm trying to retrieve a sub-list from a property list. My property list looks something like this:
vpl= ["TB199": [135, 137, 0, 0, 0, 0], "TB53": [138, 158, 11, 92, 0, 0]]
I though when I did bracket access, e.g. pl[1], I would get the first element in the list. In this case, "TB199": [135, 137, 0, 0, 0, 0]
But I'm not. I'm getting the value, i.e., [135, 137, 0, 0, 0, 0]
What's really confusing me is that I'm getting what I expect from a higher-order list. In the example above, vpl is actually derived from a larger list which looks like this:
pl = ["31": ["TB199": [135, 137, 81, 114, 0, 0], "TB53": [138, 158, 81, 114, 0, 0]], "n31": ["TB199": [135, 137, 0, 0, 0, 0], "TB53": [138, 158, 11, 92, 0, 0]]]
In that case, pl[1] is ["TB199": [135, 137, 81, 114, 0, 0], "TB53": [138, 158, 81, 114, 0, 0]]
So, how do I get the entire first element--the property list--from vpl? Do I have to cobble it together with getPropAt and bracket access (or getAt)?
Cordially,
Kerry Thompson
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