Re: dim lights?

["Ted Barry" <tbarry@xxxxxxxxxxxxxxxxxxxx>]

Well, I'm certainly glad this has opened up such a broad discussion.  I've 
learned a lot from the comments and I'm going to switch my logic to test the 
pos of the index first.  Incase those of you who were wondering InputMAD refers 
to a mailing address of which certain pieces need to be verified.  The mailing 
address field comes in the following format:

123 Easy St Apt. 3;Anytown, NY 11700;c/o John Doe

Thanks again,
   Ted

>>> boldt@xxxxxxxxxx 03/25/04 11:02AM >>>
Gerald Magnuson wrote:
> Hans,
> Are you saying it makes a difference
> if we have the "and" on the top line,
> or on the next line?
> Could you explain why that is?
> 

I believe someone else already answered this. But just to reiterate and 
clarify, the following three statements are equivalent:

#1: dow pos < 52 and
         (InputMAD(pos) <> ';');
#2: dow pos < 52
         and (InputMAD(pos) <> ';');
#3: dow pos < 52 and (InputMAD(pos) <> ';');

The compiler doesn't care how many lines are used to code an expression. 
It just boils down to personal preferences or site specific programming 
style conventions.

But they're not the same as:

dow (InputMAD(pos) <> ';') and pos < 52;

That is, order matters within a relational expression. For example, if 
the first argument of the AND operator is false, there's no point in 
evaluating the second argument. Likewise, if the first argument of the 
OR operator is true, there's no point in evaluating the second. That's 
why you test the array index before using it the reference an array element.

Cheers! Hans

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