On 08/18/2005 12:07 AM, Bruno MartÃnez wrote:
On Wed, 17 Aug 2005 15:29:51 -0300, Larry Evans [snip]
Makes perfect sense to me. The fold metafunction calculates a sequence of partial results which can then be accessed with child_i_depth_j as shown in test driver in:
The recursion in child_i_depth_j is a tail call. IIUC, the recursion is like the first drop, so increasing depths don't share part of the calculation. However, it could be written in the other style.
Yeah, you're right. I was thinking more of how fold was done. It calculates all the intermediate results, but leaves no way to access them. That was the purpose of child_i_depth_j. I'll *eventually* try to write it the other way, but I'm not sure when. Of course someone *expert* in doing that might try ;) -Larry