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Update Owned to Send, show some types which aren't

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Corey Richardson 2013-12-10 09:25:36 -05:00
parent 888144c98d
commit a44852a2d5
1 changed files with 8 additions and 4 deletions
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doc/tutorial.md
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@ -922,11 +922,15 @@ let mut b = Foo { x: 5, y: ~10 };
b.x = 10;
~~~~
If an object doesn't contain garbage-collected boxes, it consists of a single
ownership tree and is given the `Owned` trait which allows it to be sent
If an object doesn't contain any non-Send types, it consists of a single
ownership tree and is itself given the `Send` trait which allows it to be sent
between tasks. Custom destructors can only be implemented directly on types
that are `Owned`, but garbage-collected boxes can still *contain* types with
custom destructors.
that are `Send`, but non-`Send` types can still *contain* types with custom
destructors. Example of types which are not `Send` are [`Gc<T>`][gc] and
[`Rc<T>`][rc], the shared-ownership types.
[gc]: http://static.rust-lang.org/doc/master/std/gc/struct.Gc.html
[rc]: http://static.rust-lang.org/doc/master/std/rc/struct.Rc.html
# Implementing a linked list