Best Practice for Library Building and Toolboxes

[bplus]

@bplus -  5) Arrays should be hard indexed.  Don't DIM SHARED Array(10); instead DIM SHARED Array(0 To 10).  This prevents incompatibility if the user has OPTION BASE 1 in effect.

Wether that makes sense? If you declare an array with A( 0 To 10) you have eleven array elements, despite OptionBase 1.
To prevent this you have to fill the array with 1 to 10. With it a declaration with A(0 To 10) has no practical use.

Code: (Select All)

'18. Okt. 2023



Option _Explicit



Option Base 1



Dim As Integer feld(0 To 10)

Dim As Integer feld2(0 To 10)

Dim As Integer feld3(10)



Dim As Integer a, b, c, d



Locate 3, 3

For a = 0 To 10

  feld(a) = a

  Print Using "## "; feld(a),

Next



Locate 5, 3

For b = 1 To 10

  feld2(b) = b

  Print Using "## "; feld2(b),

Next



Locate 7, 3

For c = 1 To 10

  feld3(c) = c

  Print Using "## "; feld3(c),

Next



'Error - Out of range.

Locate 9, 3

For d = 0 To 10

  feld3(d) = d

  Print Using "## "; feld3(d),

Next



End

Ah yeah, no. Not for generic subs and functions that can be used in any ones app! You don't want to guess or check if Option Base is used.

Steve, Rho, Terry will tell ya the same I think.