[Gambas-user] strange problem with NOT

[Jean-Francois Perreault]

IF 1 THEN
IF NOT 1 THEN
IF NOT (1) THEN
all return true

but NOT CBool(1) returns false

I think (in VB at least) AND OR XOR and NOT should all have lower 
precedence (executed after) than (=,>,<,>=,<=,<>)

this page disagree with me , but this is for C++

http://www.intap.net/~drw/cpp/cpp03_05.htm

but this page from MSDN , about VB.NET says that NOT and the other 
logical and bitwise operators have lower precedence the comparison and 
arithmetic operators

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vblr7/html/vagrpOperatorPrecedence.asp

(what the hell is AndAlso and OrElse ?! ... never heard of those before)

I'm pretty sure this is similar behavior to VB6


(
btw there is an unrelated example of overloading DIM , like this

Dim A, B, C, D, E, F, G As Double
that would be another great thing to have 
unspecified types are the same as the last but 

you can explicitely specify each one , it just makes the code more 
compact and readable
...  what happens with Dim A, B, C as Interger, D as NEW Checkbox, E as 
Double ?
oh well..
)

Rob wrote:

>On Friday 18 March 2005 13:51, Jean-Francois Perreault wrote:
>  
>
>>it's as if NOT was a function NOT() and not a logic keyword !
>>    
>>
>
>Actually, it's as if NOT had a lower operator precedence than the 
>equals sign, which could very well be the case.  This is why I use 
>parens all over the place in my expressions.... can never remember 
>between different languages what the different operator precedences 
>are.
>
>Though I have no idea without firing up Gambas what "not 1" evaluates 
>to.
>
>Rob
>
>
>
>
>
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