Function Statement
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Sub or Function statements are similar methods, without distinction. They receive parameters by reference allowing them to be modified. LibreOffice Basic compiler accepts their respective syntax to be used interchangeably.
[Private | Public] Function Name[char] (argument1 [As Type][, argument2[char][,...]]) [As typename]
statements
[Exit Function]
statements
End Function
scope: Function default scope is Public. A Private scope denotes a module internal routine, not intended to be used from other modules.
name: Name of the subroutine to contain the value returned by the function.
arguments: Parameters to be passed to the subroutine.
Examples:
Sub ExampleExit
Dim sReturn As String
Dim sListArray(10) As String
Dim siStep As Single
For siStep = 0 to 10 REM Fill array with test data
sListArray(siStep) = chr$(siStep + 65)
MsgBox sListArray(siStep)
Next siStep
sReturn = LinSearch(sListArray(), "B")
Print sReturn
End Sub
Function LinSearch( sList(), sItem As String ) As Integer
Dim iCount As Integer
REM Linsearch searches a TextArray:sList() for a TextEntry:
REM Return value is the index of the entry or 0 (Null)
For iCount=1 To Ubound( sList() )
If sList( iCount ) = sItem Then
Exit for REM sItem found
End If
Next iCount
If iCount = Ubound( sList() ) Then iCount = 0
LinSearch = iCount
End Function