[Haskell-cafe] Data.Vector with stride

Niklas Hambüchen mail at nh2.me
Mon Dec 16 02:13:50 UTC 2013


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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