| ZVON > References > Haskell reference |
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| Module: | IO |
|---|---|
| Function: | hIsEOF |
| Type: | Handle -> IO Bool |
| Description: | For a readable handle hdl, computation hIsEOF hdl returns True if no further input can be taken from hdl; for a handle attached to a physical file this means that the current I/O position is equal to the length of the file. Otherwise, it returns False. The computation isEOF is identical, except that it works only on stdin. |
| Related: |
File: /tmp/foo.txt : Hello, world!
Program source: import IO main = do hdl <- openFile "/tmp/foo.txt" ReadMode aaa hdl aaa hdl = do t <- hIsEOF hdl if t then return() else do x <- hGetChar hdl putChar x aaa hdl
Output: Hello, world!
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