.net , collections and memory

[PT Exorcist]

i have a struct type called SINGLE_ITEM (just for testing) and a collection of it..i add some SINGLE_ITEMS to my arraylist..and then remove some of them..when i remove them from the list i can still access them if i have other references to it? or they get deleted?

[DevGrp]

Once you remove them from the list I dont think you'll be able to access them again.

[PT Exorcist]

pseudo code to show a possible situation of what im talkin about:

dim item as new single_item()
dim array as new arraylist()
array.add(item)
array.delete(item)

the 'item' is still alive isnt it?
now if yes as i think it is its ok..but what if its in different subs?

[DevGrp]

Ok, in that case item is still accessable. Its just not in the collection any more.

[PT Exorcist]

hmm yes but for example in this case?

IrcUser _tmpUser = ((IrcChannel)_channels[command[2]]).Users[nick];
((IrcChannel)_channels[command[2]]).Users.Remove(nick);
if (UserLeftChannel != null) { UserLeftChannel((IrcChannel)_channels[command2], _tmpUser);

(sorry for being in C#)

[VictorB212]

It should still be accessible -- all of its "roots" aren't gone, and therefore it is not garbage. However, the Remove() function might perform some cleanup on the item that is removed that makes it useless.