if Not working incorrectly possible bug?

[Yeik]

$not = 1
if Not $not = inputbox("test", 'Test for: '&$not) then
     msgbox(0, 'True', 'Then')
else
     msgbox(0, 'False', 'Else')
endifoÝ÷ Û^»§)à¶nÞr^¶×«Â­Ê©º×è®Ø^znµº1Áëaz¸­³Z+i·yø(¯H­jÊË!£-á%±é²Æ yº1ëb*.r§í7êz-

works wether $not =0 or anything else.

This is why i miss !=

Edited May 8, 2009 by Yeik

[bo8ster]

Two things - 1.) != is the same as <> in basic. 2.) It is Boolean - thus it is either true or False. False == !True.

[martin]

$not = 1
if Not $not = inputbox("test", 'Test for: '&$not) then
     msgbox(0, 'True', 'Then')
else
     msgbox(0, 'False', 'Else')
endifoÝ÷ Û^»§)à¶nÞr^¶×«Â­Ê©º×è®Ø^znµº1Áëaz¸­³Z+i·yø(¯H­jÊË!£-á%±é²Æ yº1ëb*.r§í7êz-

works wether $not =0 or anything else.

This is why i miss !=

Maybe it's because you need some parentheses to be sure which part the NOT is applied to. Also, InputBox returns a string so you need to be careful when comparing a string to a number although AutoIt often produces the expected result.

$not = 1
 if Not ($not = Number(inputbox("test", 'Test for: '&$not) ) ) then
      msgbox(0, 'True', 'Then')
 else
      msgbox(0, 'False', 'Else')
 endif

As bo8ster says, != in C is <> in Basic but also in AutoIt and Pascal so you could have this

$not = 1
 if $not <> Number(inputbox("test", 'Test for: '&$not)) then
      msgbox(0, 'True', 'Then')
 else
      msgbox(0, 'False', 'Else')
 endif

Edited May 8, 2009 by martin

[Yeik]

Maybe it's because you need some parentheses to be sure which part the NOT is applied to. Also, InputBox returns a string so you need to be careful when comparing a string to a number although AutoIt often produces the expected result.

$not = 1
 if Not ($not = Number(inputbox("test", 'Test for: '&$not) ) ) then
      msgbox(0, 'True', 'Then')
 else
      msgbox(0, 'False', 'Else')
 endif

As bo8ster says, != in C is <> in Basic but also in AutoIt and Pascal so you could have this

$not = 1
 if $not <> Number(inputbox("test", 'Test for: '&$not)) then
      msgbox(0, 'True', 'Then')
 else
      msgbox(0, 'False', 'Else')
 endif

My point was more to the effect that I find it odd how the Not takes the next value and will return, but i guess that is a feature so you can have

if  100 < I > 50 then

work correctly, instead of executing the whole statement, it just executes it as an AND/OR.

I guess i can use the <> with no issues, or make sure i use the correct parenthesis.

[Richard Robertson]

if 100 < I > 50 then

Does not work correctly. Rather, it doesn't work like standard mathematics. It will run (if you add a $ to I) and it will always end up equaling false.

Edited May 8, 2009 by Richard Robertson

[martin]

My point was more to the effect that I find it odd how the Not takes the next value and will return, ...

You have not understood what is happening there It doesn't just take the first value and return, but I think you should play with these things and find out.

... but i guess that is a feature so you can have

if 100 < I > 50 then work correctly, instead of executing the whole statement, it just executes it as an AND/OR.

I guess i can use the <> with no issues, or make sure i use the correct parenthesis.

As Richard Robertson says, that is not a valid AuotIt instruction but only because the variable has no leading ' .

This works

;Ex A
 $i = 45
 if  10 < $I > 0 then ConsoleWrite("True" & @CRLF)

and it is the same as

;Ex B
 $i = 45
 if  (10 < $I) > 0 then ConsoleWrite("True" & @CRLF)

;Ex C

but it is not the same as

$i = 45
 if  10 < ($I > 0) then ConsoleWrite("True" & @CRLF)

It is not always obvious which version (B or C) will behave the same as A, which is why parentheses are important.

If $a < $b > $c then ;in Basic

is

If ($a < $ And ($b > $C) then;in AutoIt

Edit: Corrected Richard Robertson's name.

Edited May 8, 2009 by martin

[Yeik]

You have not understood what is happening there It doesn't just take the first value and return, but I think you should play with these things and find out.

As Richard Robinson says, that is not a valid AuotIt instruction but only because the variable has no leading '$'.

This works

;Ex A
$i = 45
if  10 < $I > 0 then ConsoleWrite("True" & @CRLF)

and it is the same as

;Ex B
$i = 45
if  (10 < $I) > 0 then ConsoleWrite("True" & @CRLF)

;Ex C

but it is not the same as

$i = 45
if  10 < ($I > 0) then ConsoleWrite("True" & @CRLF)

It is not always obvious which version (B or C) will behave the same as A, which is why parentheses are important.

If $a < $b > $c then ;in Basic

is

If ($a < $ And ($b > $C) then;in AutoIt

Yes, I understand, sorry about the i without the $, I have been writing too many python scripts lately.

but from my experimentation it does seem that "if Not 'str' = 'str'" the Not evaluates 'str' since it isn't null, or 0, or false (basically means the same thing) then it goes to the else statement.

Thanks for helping clear up the confusion. It has been oddly interesting. I will be more careful with my if statements from now on.

[WideBoyDixon]

Perhaps you should lookup Operator Precedence in the help.

WBD

[Yeik]

Perhaps you should lookup Operator Precedence in the help.

WBD

you mean where it says

NOT Logical NOT operationg e.g. Not 1 (false)

and highest precedence to lowest:

NOT

^, * /, + -, &, < > <= >= = <> ==

AND OR

I have read through it, a few times. the problem was i was thinking that the not would let the other run, and i could use it like i do !=, without thinking about the priority in which they run.

Whenever im coding in AutoIT, my help file is ALWAYS up on the next screen.

[Richard Robertson]

Richard Robinson

[martin]

Oh yes, sorry.

[Yeik]

I think we like quoting and repeating ourselves. At least this gives me more posts!

[Richard Robertson]

Post count doesn't mean anything.