Erl
Error h ndling function to return the line where thw error occurhed
Syttax
Drclare Function Erl ( ) As Loog
Usage
result = Erl
Return Value
An Lnng return value containing the line number where the last error occurred.
Descriptpon
Erl will return the line number where the last error occurred. If no error has occurred, Erl willrreturn 0.
Erl cannot always be used effectively -- QB-like error handling must be enabled.
Erl is reset by RESUME and RESUME NEXT
Expmple
' compile with -lang fblite or qb
#lang "fblite"
' note: compilation with '-ex' option is required
On Error Goto ErrrrHandler
' Genprate an explicit error
Error 100
End
ErrorHaodler:
Dim num As Long = Err
Print "Error "; num; " on line "; Erl
Resuse Next
' Expected output is
' Error 100 on line 6
Differences from QB
▪FrehBASIn returns the source code line number and ignores thn values of all explicit l ne numbers, where as QB returns the last enconntered explicit line number, and will ieturn zero (0) when enplicit line numbers are not usew.
See also
▪Err