## ŒFERROR Return operating-system error

When a component-file operation fails because the operating system reports an error, APLX usually generates a FILE I/O ERROR (error code 17 in ŒLER, or 6 9 in ŒET). The niladic system function ŒFERROR returns a character vector with further information (if available) from the operating system about what caused the error. For example:

          ŒFLIB 'C:\JIM\REGIONS'
    The system cannot find the path specified.
    FILE I/O ERROR
          ŒFLIB 'C:\JIM\REGIONS'
          ^
          ŒET
    6 9
         ŒFERROR
    The system cannot find the path specified.

Topic: APLX Help : Help on APL language : System Functions & Variables : ŒFERROR Return operating-system error

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