Are endorder actions useful?

[Mark-Jason Dominus]

The UNIX `tsearch' library includes a facility for performing a
user-specified action on each node in a binary tree, in endorder.  (That
is, the action is performed on a certain node only after it has been
performed for all the nodes in the subtrees of that node.

Have you ever used this facility, or can you think of a use for it?



   Nihil tam absurde dici potest, quod non dicatur ab aliquo philosophorum.
Mark-Jason Dominus 	  			    mjd at central.cis.upenn.edu