@ScriptName [Solved]

[JohnOne]

I observed some odd behaviour, and just wondering why this happens? and if Im doing something wrong.

If @ScriptName = "Test.au3" Then
    ConsoleWrite(@ScriptName & @CRLF) ;writes "Test.au3"
EndIf

If Not @ScriptName = "Tess.au3" Then
    ConsoleWrite("Wrong" & @CRLF) ;does not write "wrong"
EndIf

I also tried

$sName = @ScriptName
If $sName = "Test.au3" Then
    ConsoleWrite(@ScriptName & @CRLF) ;writes "Test.au3"
EndIf

If Not $sName = "Tess.au3" Then
    ConsoleWrite("Wrong" & @CRLF) ;does not write "wrong"
EndIf

With the same result

EDIT: sorry, I guess "Not" only works with boolean type.

Edited May 19, 2010 by JohnOne

[water]

Try this one

If @ScriptName = "Test.au3" Then
    ConsoleWrite(@ScriptName & @CRLF) ;writes "Test.au3"
EndIf

If Not (@ScriptName = "Tess.au3") Then
    ConsoleWrite("Wrong" & @CRLF) ;does not write "wrong"
EndIf

[notsure]

Try this.

$sName = @ScriptName
If $sName = "Test.au3" Then
    ConsoleWrite(@ScriptName & @CRLF) ;writes "Test.au3"
EndIf

If Not ($sName = "Tess.au3") Then
    ConsoleWrite("Wrong" & @CRLF) ;does not write "wrong"
EndIf

[notsure]

too late

[JohnOne]

Ahh !

Thank you very kindly gentlemen.

Its little things like this, that get me all the time.

[water]

Glad to be of service!

[MvGulik]

whatever Edited February 7, 2011 by MvGulik

[JohnOne]

Nope. Not a bad point of view. But "Not $a=$b" => "(Not $a)=$b"

Now Im a little more confused, I came to the conclusion that autoit internally converts the value to boolean type if it is not already of that type.

The following confirmed it (for me anyway)

$100 = 100
$text ="text"
$not100 = (Not $100)
$Nottext = (Not $text)

ConsoleWrite($not100 & @CRLF & $Nottext & @CRLF)

Output

False

False

Edited May 19, 2010 by JohnOne

[MvGulik]

whatever Edited February 7, 2011 by MvGulik

[ShawnW]

autoit DOES convert to a boolean value but the problem was the order of operations.

If Not @ScriptName = "Tess.au3" Then

is the same as

If (Not @ScriptName) = "Tess.au3" Then

because the Not applies 1st. Since the @ScriptName is a string that when converted to Boolean is True (any non-zero or non-empty string is True)

This basically evaluated to

If Not True = "Tess.au3" Then

then

If Not True = True Then

in other words

If False = True Then

When you change the order of operations by saying

If Not (@ScriptName = "Tess.au3") Then

the strings are compared first. Since they are false the operation becomes

If Not (False) Then

which of course is

If True Then

Edited May 19, 2010 by ShawnW

[MvGulik]

whatever Edited February 7, 2011 by MvGulik

[notsure]

autoit DOES convert to a boolean value but the problem was the order of operations.

Great post!

Edited May 19, 2010 by notsure

[JohnOne]

Yes, well explained.

Thanks all, educated +1 <weary of smiley>