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isfilevalid [2007/02/15 03:53] (current) – created - external edit 127.0.0.1
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 +# $EPIC: isfilevalid.txt,v 1.2 2007/02/15 03:53:35 jnelson Exp $
 +======Synopsis:======
 +$[[isfilevalid]](//file descriptor//)
 +
 +======Description:======
 +This function returns true if the //file descriptor// was previously 
 +returned by the [[open]] function and has not yet been passed to the 
 +[[close]] function, and false otherwise.
 +
 +This will tell you whether or not it possible to [[read]] or [[write]]
 +to a file.
 +
 +======Returns:======
 +<file>
 +   The file descriptor is valid and can be used.
 +   The file descriptor is not valid and cannot be used
 +</file>
 +
 +======History:======
 +This function first appeared in EPIC4-1.1.6.
 +
  
isfilevalid.txt · Last modified: 2007/02/15 03:53 by 127.0.0.1