[PYTHON MATRIX-SIG] Pseudo Indices
Tue, 30 Jan 96 15:26:30 EST
From: hinsenk@ERE.UMontreal.CA (Hinsen Konrad)
> c[:, 1:2] --> c[Slice(), Slice(1,2)]
This is fine (and what I thought you were proposing all the time). I
would consider a patch if the existing 1-dim sequence and mapping
types are not affected.
What do you mean by "not affected"? That their semantics stays
the same (no problem) or that their implementation needn't
be changed? I am not sure the latter is possible for C-types.
Chris Chase actually has a prototype implementation that doesn't alter
the implementation for C types. Basically it special cases these calls.
> a[RubberIndex, 3].
You could sneak this into the abovementioned patch as "a[::, 3]".
I like that idea...
If I had enough time, I'd look at this, but that might not happen
for a while. Any other volunteers?
Again, Chris Chase has a good starting point for an implementation of
this. I'll probably polish it up myself (unless I can talk him into
spending some more time on it) and add it to the NumericPython
distribution for testing.
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