"not" vs "<>"

[masonje]

I have seen both of these used but using "Not" just bit me in the butt. Why did:

if $clientCurUsr <> "nolog" Then
;....log
endif

;....worked...

;...and "Not" didn't....

if not $clientCurUsr = "nolog" Then
;....log
endif

I lost 2 days of logs and it's my fault for not testing, but I ASSumed the above statement worked fine.

Thanks

Jon

[GaryFrost]

Logical NOT operation. e.g. NOT 1 (equals 0)

Test if two values are not equal.

[masonje]

But both should have ended up with the same outcome right? Why are the two statements not the same?

[GaryFrost]

But both should have ended up with the same outcome right? Why are the two statements not the same?

nope for example:

$Toggle = False

$Toggle = Not Toggle

MsgBox(0,"toggle", $Toggle)

[/dev/null]

I lost 2 days of logs and it's my fault for not testing, but I ASSumed the above statement worked fine.

if not ($clientCurUsr = "nolog") Then

endif

Cheers

Kurt

[GaryFrost]

if not ($clientCurUsr = "nolog") Then

endif

Cheers

Kurt

forgot about using it that way, I try to stay away from negative evaluations tho.

Sometimes have to.

[MHz]

@gafrost

If you refer to negative evalutions as to being poor syntax, I totally agree.

; Good syntax (checking not condition)
If Not $condition Then

; Poor syntax (checking equal condition and then not condition)
If Not ($condition = $condition) Then

; Good syntax (checking not equal condition)
If $condition <> $condition Then

The last checks for unequal condition. The 2nd does a long way of doing the same. Checking if equal and then not in the same line is poor syntax.

Edited October 16, 2006 by MHz