FILEEXISTS: Difference between revisions
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{{PageExamples}} | {{PageExamples}} | ||
''Example:'' Checks if a file exists before opening it. | |||
{{CodeStart}} | {{CodeStart}} | ||
{{Cl|IF}} {{Cl|_FILEEXISTS}}("mysettings.ini") THEN | {{Cl|IF}} {{Cl|_FILEEXISTS}}("mysettings.ini") THEN | ||
{{Cl|PRINT}} "Settings file found." | {{Cl|PRINT}} "Settings file found." | ||
{{Cl|END IF}} | {{Cl|END IF}} | ||
{{CodeEnd | {{CodeEnd}} | ||
Revision as of 00:45, 6 February 2023
The _FILEEXISTS function determines if a designated file name exists and returns true (-1) or false (0).
Syntax
- theFileExists% = _FILEEXISTS(filename$)
Description
- The filename$ 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 will 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.
Examples
Example: Checks if a file exists before opening it.
IF _FILEEXISTS("mysettings.ini") THEN PRINT "Settings file found." END IF |
See also