A For...Next doubt

[Terenz]

Local $One = 1, $Three = 3, $Dinamic

If $Three = 3 Then
    $One = $Dinamic
EndIf

ConsoleWrite("First For...Next: ")
For $x = 1 To 10
    $Dinamic = $x
    ConsoleWrite($One & "-")
Next
ConsoleWrite(@CRLF)

ConsoleWrite("Second For...Next: ")
For $x = 1 To 10
    $Dinamic = $x
    If $Three = 3 Then
        $One = $Dinamic
    EndIf
    ConsoleWrite($One & "-")
Next
ConsoleWrite(@CRLF)

Pratically in my original script if a checkbox was checked a value in the For...Next is different.

The thing i want to avoid is the If...EndIf in the For...Next, but if i declare the variable before the For...Next ( $One = $Dinamic ) it not change in the loop. Any solution or i'm forced to check everytime in the loop the same thing?

Thanks

Edited July 31, 2014 by Terenz

[j0kky]

I don't know what you do with $One and what happens if $three is different from 3, but in this case it works:

If $Three = 3 Then
    ConsoleWrite("First For...Next: ")
    For $x = 1 To 10
        $One = $x
        ConsoleWrite($One & "-")
    Next
EndIf

[Terenz]

Using your script i need to make two For...Next instead of one

If $Three = 3 Then
    ConsoleWrite("First For...Next: ")
    For $x = 1 To 10
        $One = $x
        ConsoleWrite($One & "-")
    Next
Else
    ConsoleWrite("Second For...Next: ")
    For $x = 1 To 10
        ConsoleWrite($One & "-")
    Next
EndIf

I'd like to make one For...Next without If...EndIf inside

Edited July 31, 2014 by Terenz

[j0kky]

 

without If...EndIf inside

But... why?

Edited July 31, 2014 by j0kky

[Terenz]

If useless in my point of view

Check for hundreds of times if $Three = 3 when i know before the loop if is equal or not of that value

[j0kky]

I see three possible solutions:

1 you check $three first, but you have to write many loops as values $three can have

2 you check $three into the loop

3 you work with memory addresses instead of simple variables... But this is a madness.

EDIT:

I've made a test script and I discovered something I never expected: the first approach is 2,38x faster than the second! Obviously I considered millions of cycles, you can't ever notice the difference with a normal script...

Local $a = 0, $b = 0, $c = 0, $timer = TimerInit()
While $b < 100000
    For $i = 0 To 10
        If $a = 0 Then
            $c += 1
        Else
            $c += 2
        EndIf
    Next
    $b += 1
WEnd
$diff1 = TimerDiff($timer) / 100000

Local $a = 0, $b = 0, $c = 0, $timer = TimerInit()
While $b < 100000
    If $a = 0 Then
        For $i = 0 to 10
            $c += 1
        Next
    Else
        For $i = 0 To 10
            $c += 2
        Next
    EndIf
    $b += 1
WEnd
$diff2 = TimerDiff($timer) / 100000

ConsoleWrite($diff1 & @CRLF & $diff2 & @CRLF & ($diff1 / $diff2) & @CRLF)

Edited July 31, 2014 by j0kky