On Tue, 8 Feb 2011, C K Kashyap wrote:
I need to convert IOArray to bytestring as shown below -
import Data.Array.IO
import Data.Binary.Put
import qualified Data.ByteString.Lazy as BS
import Data.Word
main = do
arr - newArray (0,9) 0 :: IO (IOArray Int Int)
let bs=toByteString arr
return ()
Hi,
I need to convert IOArray to bytestring as shown below -
import Data.Array.IO
import Data.Binary.Put
import qualified Data.ByteString.Lazy as BS
import Data.Word
main = do
arr - newArray (0,9) 0 :: IO (IOArray Int Int)
let bs=toByteString arr
return ()
How can I implement the 'toByteString'
Your array contains machine-sized Ints, which in practice are likely
either 32-bit or 64-bit, while a ByteString is the equivalent of an
array or 8-bit values. So you'll need to somehow convert the Ints to
Word8s. Do you know if you need big or little endian?
A basic approach would be:
* Use
On Tue, Feb 8, 2011 at 2:26 PM, Michael Snoyman mich...@snoyman.com wrote:
Your array contains machine-sized Ints, which in practice are likely
either 32-bit or 64-bit, while a ByteString is the equivalent of an
array or 8-bit values. So you'll need to somehow convert the Ints to
Word8s. Do
On Tue, Feb 8, 2011 at 11:13 AM, C K Kashyap ckkash...@gmail.com wrote:
On Tue, Feb 8, 2011 at 2:26 PM, Michael Snoyman mich...@snoyman.com wrote:
Your array contains machine-sized Ints, which in practice are likely
either 32-bit or 64-bit, while a ByteString is the equivalent of an
array
1) Just use Data.Word.Word8 instead of the second Int in your type sig
for IOArray
2) Use getElems to get a [Word8]
3) Data.ByteString.pack converts a [Word8] into a ByteString
Michael
I am currently using a list of tuples - [(Int,Int,Int)] to represent an
image buffer. You can see it in
C K Kashyap ckkash...@gmail.com writes:
I am currently using a list of tuples - [(Int,Int,Int)] to represent an
image buffer.
[...]
Looks like this is pretty slow,
Unsurprisingly, as there's a huge space overhead, and (depending on
usage, but probably even worse) linear access time.
I
On Tue, Feb 8, 2011 at 10:39 AM, C K Kashyap ckkash...@gmail.com wrote:
1) Just use Data.Word.Word8 instead of the second Int in your type sig
for IOArray
2) Use getElems to get a [Word8]
3) Data.ByteString.pack converts a [Word8] into a ByteString
Michael
I am currently using a list of
