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counting elements in a structure

 
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victorf



Joined: 01 Jan 2006
Posts: 342
Location: Schenectady, New York
Posted: 01 November 2006, 14:13 PM    Post subject: counting elements in a structure Reply with quote
Is there any way to find out how many data items are in a structure:

Structure MyStruct
Public a as byte
Public b as byte
Public c as byte
End Structure

This structure contains 3 data items. Can I determine that programatically?

Any enlightenment will be appreciated.

Vic
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dkinzer
Site Admin


Joined: 03 Sep 2005
Posts: 2499
Location: Portland, OR
Posted: 01 November 2006, 15:54 PM    Post subject: Re: counting elements in a structure Reply with quote
victorf wrote:
Is there any way to find out how many data items are in a structure?

Only if you know the sizes of the elements. In the example that you gave all of the elements are Byte. Consequently, SizeOf(MyStruct) \ SizeOf(Byte) is a compile-time constant that gives the number of elements.

If the structure contains elements having different sizes, the problem becomes more difficult.
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