Ferad Zyulkyarov writes:
 > 
 > Also, having the opportunity, I would like to ask you if there is any
 > function to use for deleting a tree (most particularly a statement or
 > variable declaration tree) or it would be enough to assign it as NULL
 > (which does not seems to be a gentle solution).

Just assign it NULL.  The garbage collector does the rest.

Andrew.

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