New Issue: Should Array.idxType return a tuple for multi-dimensional arrays?

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19141, "stonea", "Should Array.idxType return a tuple for multi-dimensional arrays?", "2022-01-28T22:33:39Z"

This was brought up during the Array Module re-review (https://github.com/Cray/chapel-private/issues/2955).

Right now if you have (say) a 3D array of ints and query array.idxType you'll just get back int but amybe it would be better if returned a tuple like: 3*int?

This would allow doing things like the following:

var i : A.idxType;
i = A.domain.first;

Some other thoguhts\questions:

  • In the 1D case should this function return the value or a 1-tuple of the value?
  • If we go down this route should we also have a function that returns the base type?A
  • Maybe we'd want the same behavior on intIdxType (although maybe we'll get rid of that method altogether?)