To sum up here is the example that can write two arrays in one file and then
read this two arrays back. To restore written data it just reads the file into
bytestring, then splits the bytestring into equal parts. The parts are decoded.
I suppose the method is suitable for decoding files with unboxed arrays of
equal size.
import Data.Array.Unboxed
import Data.Binary
import qualified Data.ByteString.Lazy as BL
import IO
a = listArray ((1,1),(3,2)) [3,4,5,6,7,8] :: UArray (Int, Int) Float
b = listArray ((1,1),(3,2)) [9,10,11,12,13,14] :: UArray (Int, Int) Float
encodeFile2 f = BL.appendFile f . encode
encoder = do
encodeFile "Results.txt" a
encodeFile2 "Results.txt" b
decoder = do
contents <- BL.readFile "Results.txt"
print $ (show (decode (fst (BL.splitAt 118 contents)) :: UArray (Int, Int)
Float))
print $ (show (decode (snd (BL.splitAt 118 contents)) :: UArray (Int, Int)
Float))
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