There is performance loss in here as well when using the compat features
they're fully opt-in though.
On 22 Nov 2013 22:35, "Artur Bodera" <notifications@github.com> wrote:

> In library/Zend/ServiceManager/ServiceManager.php:
>
> > @@ -9,7 +9,9 @@
> >
> >  namespace Zend\ServiceManager;
> >
> > -use ReflectionClass;
> > +use Zend\ServiceManager\Zf2Compat\AliasResolverAbstractFactory;
>
> Well, it's ok as long as the `zf2compat` is an opt-in feature, not enabled
> by default (either by decoration, substitution, split in packages,
> conditional factories or in some other way). The reason is exactly the same
> as with `zf1compat` (zf1 for zf2), which never came to be because of the
> mountain of maintenance trouble and performance loss it it would cause.
>
> —
> Reply to this email directly or view it on GitHub<https://github.com/zendframework/zf2/pull/5500/files#r7869720>
> .
>