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Arrays as parameters?

Wingnut

Well-known member
3rd Party Module Dev
Tutorial Author
Joined
Jan 2, 2020
Messages
1,414
How would I use arrays as inputs parameters and return outputs inside a function?
 
Solved and feeling stupid. I was using arrayname[] where it should've been arrayname:Int[] :coffee:
 
It would be nice, if you posted some code to show it is done, so this tread can be of use for someone else.
Otherwise I would delete it altogether.
 
It would be nice, if you posted some code to show it is done, so this tread can be of use for someone else.
Otherwise I would delete it altogether.
An example.
Code:
Function Main()
    Local ar1:Int[] = [ 1,2,3,4,5 ]
 
    PrintArray ar1
    ShiftArrayLeft( ar1 )
    PrintArray ar1
 
    Local ar2:= ShiftArrayRight( ar1 )
 
    PrintArray( ar2 )
End

Function PrintArray( ar:Int[] )
    Local s:=""
    For Local i:= 0 Until ar.Length()
        s+=ar[i]+","
    Next
    Print s[.. s.Length()- 1 ]
End Function

' Notice that the return is void as the array is being passed as a reference.
' This means that you are working directly with the array passed
Function ShiftArrayLeft:Void( ar:Int[] )
    Local len:= ar.Length()
    Local temp:Int = ar[0]
    Local i:=1

    While i < len
        If i>len-1 Exit
        ar[i-1] = ar[i]
        i+=1
    Wend
    ar[len - 1] = temp
End Function

' Return a new array based of the array passed
Function ShiftArrayRight:Int[]( ar:Int[] )
    Local len:= ar.Length()
    Local ret:Int[len]
    Local temp:=ar[len - 1] 
    Local i:=0
 
    While i < len
        i+=1
        If i>len-1 Exit
        ret[i] = ar[i-1]
    Wend
 
    ret[0] = temp
 
    Return ret
End Function
 
Last edited:
Great example, thanks!
 
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