On 6/20/11, Mathias Gaunard <mathias.gaunard@ens-lyon.org> wrote:
On 19/06/2011 22:57, Brian Smith wrote:
Can I have a view of part of the array? Can I easily linearize or reshape it?
Yes. If you mean by linearization, can it be allocated with a single memory request then no. I did write such a type and it was pretty efficient but I removed it. Reshaping a view is possible though.
No, I mean an operation that linearizes the element in a 1-dimensional structure.
No.
Given another N-dimensional array whose values are positions, can I obtain the array of the values accessed at the given positions?
With some effort on your behalf yes.
It should be easy to use.
Ok then with a little bit of effort on your behalf.
How does it integrate with range and iterators?
Iterators we're also implemented as separate classes then removed in favour of the view. The reason being they proved detremental to performance, maybe an implementation detail, nevertheless for the time being their gone. Ranges are a part of the view and iterators returned by classes are good old fashioned pointers that are owned by class that returns them.
If you had performance problems, maybe you did it wrong.
Well deduced Sherlock but I said that.
Both outer dimension iteration and linear iteration are necessary to have.
Why? _______________________________________________
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