What version are you using?  

In Pharo 3 it just checks the identity, species, and then accesses some inst
vars.  

What objects are instantiated?







Esteban A. Maringolo wrote
> I'm grouping by date a resultset coming from the database, it
> cointains around 2000 dated objects.
> 
> It is:
> myObject groupBy: #date.
> 
> But turn's out that DateAndTime #= comparison is elegant object-wise
> but not performance-wise. Because it instantiates several other
> objects along the way.
> 
> This is in the milliseconds range, but in the agregate of a couple of
> thousand of objects, it creates a lot of not-simple-objects (it is,
> not integers), and maybe because of that it isn't as fast as I'd
> expect.
> 
> Did somebody experienced this too?
> 
> Regards,
> 
> Esteban A. Maringolo





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