[Haskell-cafe] Data.Vector.Unboxed

[Ivan Lazar Miljenovic]

On 9 November 2011 20:56, kaffeepause73 <kaffeepause73 at yahoo.de> wrote:
> Hello,
>
> quick question about unboxed Vectors :
>
> Is it possible to create an unboxed vector of unboxed vector ? :
>
>> import qualified Data.Vector.Unboxed as V
>> type UnboxedNestedVextor =  V.Vector (V.Vector Int)

Only if you can define an Unbox instance for unboxed vectors (and I
don't know how feasible that is):
http://hackage.haskell.org/packages/archive/vector/0.9/doc/html/Data-Vector-Unboxed.html#t:Unbox

>
> Alternatively I would have to use:
>
>> import qualified Data.Vector.Unboxed as V
>> import qualified Data.Vector as VB
>
> type UnboxedNestedVextor =  VB.Vector (V.Vector Int)
>
> Is there a rule of thumb how much quicker Unboxed Vectors are ?
>
> Cheers Phil
>
>
> --
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>
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-- 
Ivan Lazar Miljenovic
Ivan.Miljenovic at gmail.com
IvanMiljenovic.wordpress.com