Re: [Tutor] treeTraversal, nested return?

2010-06-09 Thread jjcrump
Thanks to Matthew and Denis for trying to enlighten me. Thanks to your clues I've made some progress; however, I can't seem to get the hang of the usual recursion trick of keeping track of the level one is on. It doesn't work, I suppose, because the data structure I'm traversing isn't actually

Re: [Tutor] treeTraversal, nested return?

2010-06-04 Thread jjcrump
Matthew, sorry for responding to you instead of the list Thanks for trying to tutor the dunderheaded. It is exactly the general solution I wish to learn. But how, in the context of my treeTraversal function, does one "keep track of the depth you're at"? Tabs are all very well, but what I want

[Tutor] treeTraversal, nested return?

2010-06-04 Thread jjcrump
All, any observations might be helpful. For the display of database contents I have the following problem: Database querys will return data to me in tuples of the following sort: each tuple has a unique id, a parent id, and a type. a parent id of 0 indicates that the element has no parent. no