[litwindow-users] <map> as container

[yrs90 <yr...@ya...>]

I have been pondering <map> containers again.

The reason that <map> could not be used as a container was that it didn't
have a way to be bookmarked like a vector, is that right?  I'm not sure I
understand the limitation.  It seems that there are at least two possible
ways of dealing with bookmarks using a <map>.

If the bookmarks are refreshed when a NotifyChanged() is received, the
existing implementation of indexing off the begin() iterator looks
sufficient.  As it stands now, when a new data element is inserted or
deleted, the entire view is repopulated, so the index can be refreshed with
the updated ordering.

If the bookmark needs to persist in the face of insertions and deletions,
the iterator itself could be used as the bookmark.  <map> has the nice
feature of not invalidating the iterators when an element is inserted or
deleted (other than the deleted element).  This is less volatile than a
<vector>.

Am I overlooking something?

Best regards,
Joel


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