Another thought ...
Are the arrays large with only a few true values? If so a sparse array
approach may be better. IE only allocate space to store a true value. You
will have to allocate space to tell you which values you have and map the
real index to the storage index, but if the number of values to be stored
are very small w.r.t. the overall size of the array you may end up with a
saving.
By the way, a black & white bitmap is a 2D array of boolean values.
Wes Edwards
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On
> Behalf Of Nahum Wild
> Sent: Friday, 15 December 2000 13:06
> To: Multiple recipients of list delphi
> Subject: [DUG]: TBits - array of bits
>
>
> I'm wanting to create a 2d array of bits where the less memory
> used to store
> the array the better. A boolean array is out of the question as a boolean
> uses up a byte. So I looked in the D5 help and found the TBits class. It
> is accessed as a boolean but looking at its source code reveals that its
> coded in assembler. Which I can't read. So my question is - does TBits
> store everything at the bit level or at the byte level?
>
> Alternatively does anyone know of a different approach to doing this where
> memory footprint it critical with access speed coming a close second?
>
>
> Cheers,
>
> Nahum Wild
> Game Designer
> Realism Ltd
>
> ESDAO - The wargame of a thousand faces.
> http://www.esdao.net
>
> Download the public beta version now!
>
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