Graeme Geldenhuys schrieb:
On 2013-06-27 11:45, Hans-Peter Diettrich wrote:
Automatic reference counting works pretty well, doing it manually is
asking for trouble.
Sometimes it becomes trick (at least with reference counted interfaces).
eg: I have code where I pass a interface around, but don't want the
reference count to increment - so you need to take special precaution.
Then I also have a container that holds references to interfaces, but
again I don't want the container to increment reference counts - which
would normally be the case. Sometimes the opposite is also true.
I see no valid reason for doing so.
Then there is also the question of when does the interface or object get
freed - timing is sometimes important too. eg: I can't use some of the
code I used to use in Delphi with interfaces, because the code
"apparently" relies on undocumented Delphi language behaviour (even some
commercial apps rely on that same behaviour). Free Pascal frees the
Interface instances at different times to Delphi - so the code in my
application under Free Pascal had to be changed. More info: Google mouse
cursor management with Interfaces, or look at CodeSite's method tracing
abilities.
I don't see how this is related to managed objects.
DoDi
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