Difference between revisions of "FILEEXISTS"

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* The function reads the system information directly without using a [[SHELL]] procedure.
 
* The function reads the system information directly without using a [[SHELL]] procedure.
 
* The function can use the appropriate Operating System path separators. [[_OS$]] can determine the operating system.
 
* The function can use the appropriate Operating System path separators. [[_OS$]] can determine the operating system.
* '''This function does not guarantee that a file can be accessed or opened'''
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* '''This function does not guarantee that a file can be accessed or opened, just that it exists'''
  
  

Revision as of 00:01, 9 August 2013

The _FILEEXISTS function determines if a designated file name exists and returns True or False.


Syntax

IF _FILEEXISTS(filename$) THEN


  • The filename parameter can be a literal or variable string value that can include a path.
  • The function returns -1 when a file exists and 0 when it does not.
  • The function reads the system information directly without using a SHELL procedure.
  • The function can use the appropriate Operating System path separators. _OS$ can determine the operating system.
  • This function does not guarantee that a file can be accessed or opened, just that it exists


See also:



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