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DarkBASIC Professional Discussion / The DIM Command...

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Mike P
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Joined: 11th Dec 2004
Location: England
Posted: 30th Dec 2004 17:57 Edited at: 30th Dec 2004 17:58
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I just do not understand the dim command.

1. Whats all this elements stuff???
2. Why can you just use normal variables??

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BlinkOk
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Joined: 22nd Oct 2003
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Posted: 30th Dec 2004 18:10
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dim is short for dimension as in dimension an array. array's are handy for storing information in tables. anything that needs to be indexed should be stored in an array. if i had say 10 sprites on screen i could access each sprite by placing their image number in an array;
dim sprites(10)
then i could access each one in a loop like;
for i=0 to 9 step 1
img=sprites(i)
`code to manipulate image
next i

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Emperor Baal
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Posted: 30th Dec 2004 18:24
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Allass..... I have an array tutorial on my site... press da web button or click on my banner.

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Mike P
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Posted: 30th Dec 2004 20:20
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Thanks that helped

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Tapewormz
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Location: Winnipeg, Mantoba, Canada
Posted: 31st Dec 2004 21:40 Edited at: 31st Dec 2004 21:42
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DIM makes sure that your array's reserve memory. This is the general idea...I'm sure there's more too it than just that.

Since your array's have to store data, you want to DIMensionise them to make sure you have that memory available in the first place. This reserves the memory for your array.

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