On 29-8-2010 1:29, Taco Hoekwater wrote:
On 08/29/2010 01:15 PM, Hans Hagen wrote:
On 29-8-2010 9:03, Taco Hoekwater wrote:
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())?
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.
but for storing the node's id one can as well use the nodes user object itself as it's equally unique during the livespan of a node and one can compare pointers so the 'id' snippet in the string is not giving more uniqueness than the node user object itself
Not necessarily: there can be different userdata objects for the same node. (I only just now realized that)
Sure, and in the beginning we even had problems with the comparison (and I know of a few places in my code that I need to deal with it) but I think that for patricks case the only thing that matters is uniqueness during a certain period (this graph creation i guess) Anyhow, a way out is: local t = {} for ... loop over fields in node ... do t[k] = ... end hash = table.concat(t) -- maybe with some sort on keys beforehand Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------