[Haskell-cafe] ANNOUNCE: vector-bytestring-

Christian Maeder Christian.Maeder at dfki.de
Fri Oct 14 12:58:19 CEST 2011

Am 12.10.2011 16:02, schrieb Bas van Dijk:
>    All your ByteString are belong to us...
> Hello,
> I'm pleased to announce the beta release of vector-bytestring. This
> library provides the type ByteString which is defined as a type
> synonym for a storable Vector of Word8s (from the vector package):
> type ByteString = Data.Vector.Storable.Vector Word8
> It exports the same API as the bytestring package except that the
> module names are prefixed with: Data.Vector.Storable.ByteString
> instead of Data.ByteString.
> The very ambitious goal of this package is that it will eventually
> replace our beloved bytestring package. By basing this package on
> vector, we can benefit from all the optimizations (like
> stream-fusion!) in that library. We will also have just a single
> library to test, debug and optimize.
> I ported the bytestring test-suite to vector-bytestring. You can run it using:
> $ cabal configure --enable-tests; cabal build; cabal test
> All 54800 tests pass! Only one property doesn't hold:
> prop_show :: ByteString ->  Bool
> prop_show x = show x == show (unpack x)
> This is because I don't provide a custom Show instance for ByteStrings
> but use the one from Vector which shows a vector like "fromList
> [1,2,3]" instead as "\SOH\STX\ETX" like bytestring does. Hopefully
> this is not a problem in practice.

All derived Show instances for data types using your ByteString will be 
different, too.

Would it not be simple to use a newtype for ByteString (rather than a 

Cheers Christian

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