On Fri, 29 Jan 2010 11:02:39 -0800, Barry Kelly
<✉nospam.codegear.com> wrote:

>It is equivalent to the try / finally etc. owing to the mechanism behind
>reference counting.

thank you, that was the closest approach to what I was looking for.
that's fine for specific types of guards and I definitely will use
that interface-based way. moreover I just discovered that I already
used the very same approach back in 2008 when I implemented
delphi-based component TVPool for general purpose pooling. there are
two functions for getting pooled instance: GetObjInstance and
GetIntfInstance. second one returning interface. quite strange I
didn't propogated it broadly


now what about general purpose scoped guard which is created and used
via ON_BLOCK_EXIT(SomeFunc,Type1 var1,Type2 var2,Type3 var3) and
ON_BLOCK_EXIT_OBJ(SomeObject,TSomeObject::MemberFunc,Type1
param1,Type2 param2,Type3 param3)


is it possible to implement those using say generics or something?


thanks again for your explanation


-- 
Vladimir Ulchenko aka vavan