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Module: IO
Function: hFileSize
Type: Handle -> IO Integer
Description: for a handle hdl which is attached to a physical file, hFileSize hdl returns the size of that file in 8-bit bytes (>= 0).
Related:

Example 1
Program source: 

import IO

main = do x <- openFile "/tmp/foo.txt" ReadMode
          y <-hFileSize x
          print y

Output: 25458




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