[Blitz-support] Use of general indirection for arrays

[David S. <dps...@gm...>]

Hi,

I would like to be able to use list-based array indirection, as
described in chapter 6 of the Blitz manual, in something like the
following (schematic) way:

vector< TinyVector<int,2> > positions;
Array<int, 2> data;
Array<bool, 2> above_threshold;

data[positions] += 10;
above_threshold = where(data[positions] > 100, true, false);

That is, I would like to be able to use arrays with indirection within
any kind of array expressions.

Is this possible, or do I have to hand-code everything with iterators
to loop over the lists of positions?
[I have of course tried the above in a sample program, and it doesn't
seem to work.]

Thanks and best wishes,
David.