optional reduction of overhead for classes

[Tom S]

clayasaurus wrote:
> class EntityData
> {
>   float x, y;
> }
> 
> ------------------------------------------------------------------------
> 
> My question is, how much memory does EntityData use before allocation 
> (4-bytes?), and how much does it use after allocation (4+4+4 bytes total?).

Well, before allocation, your EntityData doesn't really exist, only a 
null reference, which takes 4 bytes on 32 bit systems. IIRC, you can 
check the size of an object thru .classinfo.init.length.
If you want to avoid overhead, consider making EntityData a struct, to 
which you'd store a pointer.


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Tomasz Stachowiak  /+ a.k.a. h3r3tic +/