Re: tower.[ch]

[John Darrington]

On Fri, Nov 21, 2008 at 09:58:58PM -0800, Ben Pfaff wrote:
     John Darrington <address@hidden> writes:
     
     > Since the situation is similar to the "pile of books" analogy as
     > described in the comment in src/libpspp/tower.h,  I thought I could use
     > that.  However, there doesn't seem to be any way 1) to get a
     > tower_node by index; or 2) given a tower_node (or index), find out how
     > far from the "ground level" this node starts.
     >
     > If tower.[ch] can be made to do this in less than linear time, then I
     > think we can use this to make operations on the datasheet much faster.
     
     Here is a pair of patches, to be applied sequentially, that add
     such support to the tower code.  Is this what you are looking
     for?

I think so.  Thanks.


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