static or dynamic "stop" value in FOR loops

[ds34]

I am using for loops to check conditions in arrays, i.e

CODE

For $i = 1 To UBound($CIT_list) - 1

If $CIT_list[$i]=$CIT_list[$i-1] Then _ArrayDelete($CIT_list,$i)

Next

This code occasionally crashes:

: ==> Array variable has incorrect number of subscripts or subscript dimension range exceeded.:

If $TID_list[$i]=$TID_list[$i-1] Then _ArrayDelete($TID_list,$i)

If ^ ERROR

As it appears to me the stop value of the FOR loop is declared upon first run of the loop, i.e. it does not check each run, if the arraysize has changed, thus crashing when removing an entry and changing the arrays dimension? Am I right?

[Jos]

correct...

Just add an IF testing the Ubound in your loop and have it do an ExitLoop when it has reached it.

Jos

[PsaltyDS]

correct...

Just add an IF testing the Ubound in your loop and have it do an ExitLoop when it has reached it.

Jos

Two more possibilities:

; Walk array in reverse
For $i = UBound($CIT_list) - 1 To 1 Step -1
    If $CIT_list[$i] = $CIT_list[$i - 1] Then _ArrayDelete($CIT_list, $i)
Next

; Use Do/Until
$i = 1
Do
    If $CIT_list[$i] = $CIT_list[$i - 1] Then _ArrayDelete($CIT_list, $i)
    $i += 1
Until $i >= UBound($CIT_list) - 1

[ds34]

Thanks for the fast reply.

Should make it to the "for" help.