--- Todd Miller <jmiller@stsci.edu> wrote:
Two other issues come up trying to implement the "rank-0 experiment":
1. What should be the behavior of subscripting a rank-0 array?
a. Return the scalar value (what numarray does now. seems inconsistent)
If you think of it as "dereferencing" instead of "indexing", I think this is most consistent. It takes 3 elements to dereference a rank-3 array, so it should take 0 elements to dereference a rank-0 array.
2. What's a decent notation for .asScalar()?
a. a[ <subscript_resulting_in_rank0> ][0] (what numarray does now) b. a[ <subscript_resulting_in_rank0> ]() (override __call__) c. a[ <subscript_resulting_in_rank0> ].asScalar()
Any strong opinions?
Since subscripting a rank-3 array: a[1, 2, 3] is very much like a[(1, 2, 3)] The __getitem__ receives the tuple (1, 2, 3) in both cases. (Try it!) So that would imply subscripting (dereferencing) a rank-0 array could be: a[] could be represented by a[()] It's just unfortunate that Python doesn't currently recognize the a[] as a valid syntax. Cheers, -Scott __________________________________________________ Do you Yahoo!? Yahoo! News - Today's headlines http://news.yahoo.com