On Sun, May 3, 2020 at 11:23 PM Thomas Passin <tbp100...@gmail.com> wrote:
About clones, we always talk about cloning nodes, but it seems to me that > what actually gets cloned is an entire subtree > Correct. > I'm not sure how a subtree is currently modeled in Leo. > This has a long history. The result of this history is that the tree contains nothing but pointers (references) to vnodes. This is the so-called "unified node" world. In this world, clones are simply additional references to a vnodes. That is, vnodes may have multiple parent vnodes, provided that there are no "cycles" (loops) in the resulting graph. > Since a tree can be built out of nodes that have child and parent nodes, > one can be constructed without an explicit model for a (sub)tree. But > since many operations we want to do are really on (sub)trees and not nodes, > maybe an explicit tree concept in addition to a node concept would be > useful(if there isn't one already). > It's very unlikely that Leo's vnode structure will ever change. Edward -- You received this message because you are subscribed to the Google Groups "leo-editor" group. To unsubscribe from this group and stop receiving emails from it, send an email to leo-editor+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/leo-editor/CAMF8tS1jN1PyB3FF77cxFYiZxF25KfMczUoA2s8QcBBSOHQ5YA%40mail.gmail.com.
