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AppGameKit Classic Chat / Explicit variable declarations, please!

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MobileCreator
12
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Joined: 1st Jun 2011
Location: Ottawa - Canada
Posted: 22nd Aug 2011 03:30
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Hi,

I wonder if AppGameKit Basic supports the equivalent to the VisualBasic Option Explicit, making mandatory to declare (or set a value) first before the variable can be used.

I think one error that is pretty common and super hard to fix is set the variable player_width but testing the variable player_widht, for example.

Please, tell me I can set this behavior!

Thanks

Paulo
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Rampage
16
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Joined: 4th Feb 2008
Location: New Zealand
Posted: 22nd Aug 2011 10:07
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Are you referring to types?
If so you can simply set one up using:


Then access the variables through background.img, background.spr etc.

This probably isn't what you are referring too but its what I got from what you said

Regards,

Max
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Hodgey
14
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Joined: 10th Oct 2009
Location: Australia
Posted: 22nd Aug 2011 11:11
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I think what he means is that you must declare a variable before usage.

An example:
a as integer
a = screenwidth()
print a

as opposed to:
a = screenwidth()
print a

He would like the second to bring up a warning or compile error because a hasn't been declared. I would also like this because then you know that you haven't accidentally made up a variable on the spot due to a typo and spend hours trying to debug it only to find a typo!

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MobileCreator
12
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Joined: 1st Jun 2011
Location: Ottawa - Canada
Posted: 22nd Aug 2011 16:44
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Thanks for the answers. Yes, it is what Hodgey says. Declaring the variables before using it helps to keep track of them, and avoid typo mistakes.

Rampage, I didn't think this before, but using types is a good way to work around the lack of strong types of simple variables. It is not perfect, but probably enclosing everything that is important in types is a good idea to avoid silly mistakes.

Thanks

Paulo
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