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doc: add note below diagram about memory layout.

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Div Shekhar 2014-01-15 22:02:48 -08:00
parent 065f936bf1
commit 8f93d39c75
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doc/tutorial.md
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@ -1025,6 +1025,11 @@ box, while the owner holds onto a pointer to it:
list -> | Cons | 1 | ~ | -> | Cons | 2 | ~ | -> | Cons | 3 | ~ | -> | Nil |
+--------------+ +--------------+ +--------------+ +--------------+
> Note: the above diagram shows the logical contents of the enum. The actual
> memory layout of the enum may vary. For example, for the `List` enum shown
> above, Rust guarantees that there will be no enum tag field in the actual
> structure. See the language reference for more details.
An owned box is a common example of a type with a destructor. The allocated
memory is cleaned up when the box is destroyed.