On Tue, 2003-11-25 at 10:37, Phil Steitz wrote: > Thinking about this some more, the semantics of keySet() would be > difficult with "CompositeMap" approach that I have suggested above. We > would either have to require that T be idempotent - i.e., T(T(x)) = T(x) > or have the user supply a (partial) inverse transformer to return *a* > pre-image for each transformed key. > > Phil
Not quite sure if I understood your point entirely but it would not be possible to supply an inverse transformation for the lowercase operation because it is a many to one function. Perhaps you covered this with the word 'partial' but I don't see what you mean by that. What's a partial inverse transformer? -Janek --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
