replicate -package:Cabal -package:base -package:bytestring -package:dlist -package:conduit -package:mono-traversable package:memory

replicate :: ByteArray ba => Int -> Word8 -> ba
memory Data.ByteArray
Create a bytearray of a specific size containing a repeated byte value
replicate :: forall n ba . (ByteArrayN n ba, KnownNat n) => Word8 -> ba
memory Data.ByteArray.Sized
Create a bytearray of a specific size containing a repeated byte value