[Haskell-beginners] how more efficient read/write a file ?

[anyzhen]

consider this :
i want load a 4G file(or some bigger file) ,and the process  data operation just like  010 to 101( XOR bits  ) , is it some efficient function down it ?
such  hPutStr  hPutChar is Char layer   , is exist bit layer operations?


thanks for any help 


jiangzhen3s at qq.com
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