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Using COLLECTIONS save memory over Arrays?!?

Posted on 1999-01-20
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Last Modified: 2010-05-03
I am interested in making several (ie 50) instances of my form which has several controls on it. Is it best to use a Collection or to use an Array instance. I know many of you will say use a Collection instead BUT does it save any more memory than Arrays?  I was playing around and i notice 0 difference in memory savings...so what is the benefit of using Collections over arrays when it comes to having instances of Forms?

Thanks
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Question by:ljaques
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VBDesigns earned 0 total points
ID: 1469750
Collections are slower and (I believe) use more memory than arrays.  However, collections allow easy management of data.  Computers are fast enough now a days that collections will do just fine for most data management -- you'll only want to use arrays with speed-specific code that requires instant access to array data.

The advantage to collections is that you can regulate multiple types of objects and variables with them -- Arrays only allow one data type.

Collections also support indexing, and instant 'cleanup' when you remove items from them -- with an array, you need to move the data yourself.

Good luck!
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by:ljaques
ID: 1469751
Thanks very much for that CLEAR answer!
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by:mogray
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There is also a nice article on this in last month's VBPJ (visual basic programmer's journal).  The article includes some performance tests and arrays are indeed faster, but as VBDesigns has said, arrays require more bookkeeping on your part.

Regards,
Wayne
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