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Array: is this a bug?


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_Arrayadd(), enlarges the array

This is the internals of _arrayadd()

Func _ArrayAdd(ByRef $avArray, $vValue)
    If Not IsArray($avArray) Then Return SetError(1, 0, -1)
    If UBound($avArray, 0) <> 1 Then Return SetError(2, 0, -1)

    Local $iUBound = UBound($avArray)
    ReDim $avArray[$iUBound + 1]
    $avArray[$iUBound] = $vValue
    Return $iUBound
EndFunc   ;==>_ArrayAdd
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nico18n,

No it is not a bug. :)

In the first case, you declare the array with 10 elements ([0]-[9]) and use _ArrayAdd to add element [10]. The _ArrayAdd command uses ReDim to resize the array to have 11 elements ([0]-[10]) - so you get element [10].

In the second case, you also declare the array with 10 elements, but try to assign element [10] without using ReDim. So the array still has only 10 elements and you are trying to declare the eleventh element. And surprise, surprise it fails!

Clear? Please ask if not. :idea:

M23

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