[fpc-devel] Generics.Collections as package for Lazarus or package for FPC RTL
Marco van de Voort
marcov at stack.nl
Fri Jan 29 17:24:20 CET 2016
In our previous episode, Sven Barth said:
> > Interfaces are relatively slow. Not only because of the refcounting, but
> > returning interfaces in a tight loop (e.g. to get the elements of an
> > enumeration) would be a new allocation each time.
> Note: the enumerator of a for-in is only fetched once before the loop, so
> it does not really matter whether it's an interface or record as long as
> the elements themselves aren't on demand allocated interfaces.
The trouble is that you then have to avoid for-in for many potentially small
iterations as in the hash case.
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