On 08/29/2010 08:48 AM, Patrick Gundlach wrote:

Is the following 172 something like I need? How would I access that (besides 
string.gsub())?

<node    nil<     172>     nil : hlist 2>


I am currently using this number in the middle via tostring() and gsub(). But 
I'd still like to know if this can be used as an id.

This number uniquely identifies a node for as long as it stays
allocated, yes. If it is freed, a new node may have the same
number.

Best wishes,
Taco
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