ByteArray interface (GHC extensions) ByteArrays are chunks of immutable Haskell heap: data ByteArray ix -- abstract -- instance of: Eq, CCallable. newByteArray :: Ix ix => (ix,ix) -> ST s (ByteArray ix) indexCharArray :: Ix ix => ByteArray ix -> ix -> Char indexIntArray :: Ix ix => ByteArray ix -> ix -> Int indexAddrArray :: Ix ix => ByteArray ix -> ix -> Addr indexFloatArray :: Ix ix => ByteArray ix -> ix -> Float indexDoubleArray :: Ix ix => ByteArray ix -> ix -> Double sizeofByteArray :: Ix ix => ByteArray ix -> Int newByteArray indexCharArray indexIntArray indexAddrArray indexFloatArray indexDoubleArray indexDoubleArray sizeofByteArray Remarks: The operation newByteArray creates a byte array of length equal to the range of its indices in bytes. sizeofByteArray returns the size of the byte array, in bytes. Equality on byte arrays is value equality, not pointer equality (as is the case for its mutable variant.) Two byte arrays are equal if they're of the same length and they're pairwise equal.