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DarkBASIC Professional Discussion / NOT, anyone?

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ryansobol
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Posted: 1st Jul 2003 03:15
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Hey y'all. What is the deal with the NOT in DBPRO? I know I must be doing something wrong because a language without a NOT is pretty limiting. Im trying to do something of the like this. :-s
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APEXnow
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Posted: 1st Jul 2003 03:25 Edited at: 1st Jul 2003 03:34
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That my friend is C, or C++ operator usage. You need to use the <> operator.

I.e. IF (SCREEN WIDTH() <> 1024) AND (SCREEN HEIGHT() <> 768) AND SCREEN DEPTH() <> 32)
EXIT PROMPT "Sorry, but you graphics card does not support the resolution of 1024 X 768 X 32.", "Warning"
END
ENDIF

Or if you're actually testing against TRUE / FALSE conditions, use

IF NOT (SCREEN WIDTH() = 1024) AND NOT (SCREEN HEIGHT() = 768) AND NOT (SCREEN DEPTH() = 32)
EXIT PROMPT "Sorry, but you graphics card does not support the resolution of 1024 X 768 X 32.", "Warning"
END
ENDIF

Although the latter is not a very proper way of condition testing as it just complicates the code reading issue for other programmers. The former method should work though

MSI/AMD Athlon 1300, 256Mb, 60GbHD, SoundBlaster Live!, GeForce 4 MX440-64Mb, Win2K, DX9, DarkBASIC Pro(PUv4.1)
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ryansobol
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Posted: 1st Jul 2003 03:55
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Thanx for your speedy responce, APEXnow.

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APEXnow
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Posted: 1st Jul 2003 03:56
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Nah prob

MSI/AMD Athlon 1300, 256Mb, 60GbHD, SoundBlaster Live!, GeForce 4 MX440-64Mb, Win2K, DX9, DarkBASIC Pro(PUv4.1)
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Darkheart
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Posted: 1st Jul 2003 04:37 Edited at: 1st Jul 2003 13:14
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.

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Bloodshot
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Posted: 1st Jul 2003 05:52 Edited at: 1st Jul 2003 17:51
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Ummm...DBPro does have "NOT"!

Look down the page, under Principles>>Operators in the Help Assistant:

Quote: "
The NOT operator works using the following table. This operator is a unary operator and only requires a single right-side value:

NOT 0 = 1
NOT 1 = 0

"





I've always stuck with <> myself though, because I find it easier to get my head 'round, than NOT.
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MrTAToad
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Posted: 1st Jul 2003 15:14
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Its slightly different to the C/C++ as it takes a left-hand and right-hand value...

Good news everyone! I really am THAT good...
http://www.nickk.nildram.co.uk/ for great plug-ins - oh my, yes!
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Shadow Robert
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Posted: 1st Jul 2003 20:13
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not really any different...





same command really just a different operator ... i have a feeling that Lee just did a check to see if there was a value on the left or not

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MrTAToad
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Posted: 1st Jul 2003 20:29
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C only takes one parameter for NOT to produce a result, while DBPro requires 2.

Good news everyone! I really am THAT good...
http://www.nickk.nildram.co.uk/ for great plug-ins - oh my, yes!
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IanM
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Posted: 1st Jul 2003 20:33
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NOT just seems to toggle the bits - just like XOR does, or at least, I've not spotted the difference yet
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Fallout
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Posted: 1st Jul 2003 22:38
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NOT only needs one parameter. I'm always using:

if not object exist(num)
endif

love it!

Machine: P4 2200, 1GB RAM, GeForce4 64MB, Audigy Platinum
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(It's not all about the coding)
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Shadow Robert
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Posted: 2nd Jul 2003 02:57
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i dunno i've noticed that you can use it without a secondary setting and it then just checks on a boolean scale rather than a per bit or total statement.

though to be honest i would love for dbp to actually have the full array of operators at its disposal, everything seems to just be wrapped to C rather than be native. probably isn't but seems like it

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