Hey niklas, I'll releasing an abstraction layer on top of vector soon that'll have support for striding, and I definitely agree that such info is key for easy interop



On Sun, Dec 15, 2013 at 9:42 PM, Mike Ledger <mike@quasimal.com> wrote:
A quick and dirty way do have strides with Data.Vector.Storable might be to use a newtype around a type, and have its sizeOf be the stride.


On Monday, December 16, 2013 1:13:50 PM, Niklas Hambüchen wrote:
For low-level performance, especially when dealing with images, pixel
buffers, camera devices etc, arrays can have a "stride" to align rows to
word boundaries.

http://en.wikipedia.org/wiki/Stride_of_an_array

Data.Vector does not support strides (as mentioned in
http://u.arboreus.com/2011/03/how-to-choose-haskell-array-library.html),
but it would be nice to have them, especially for Storable vectors and
interfacing with C imaging libraries.

Is there a particular reason / difficulty that would go against an
implementation of a Data.Vector.Storable.Stride and the corresponding
generic vector instances?
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