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fix typo in Lifetimes mutable reference aliasing section #225

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Merged
JohnTitor merged 1 commit into from
Oct 16, 2020
Merged

fix typo in Lifetimes mutable reference aliasing section #225

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2 changes: 1 addition & 1 deletion src/lifetimes.md
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Expand Up @@ -213,7 +213,7 @@ understand `Vec` at all. What it *does* see is that `x` has to live for `'b` to
be printed. The signature of `Index::index` subsequently demands that the
reference we take to `data` has to survive for `'b`. When we try to call `push`,
it then sees us try to make an `&'c mut data`. Rust knows that `'c` is contained
within `'b`, and rejects our program because the `&'b data` must still be live!
within `'b`, and rejects our program because the `&'b data` must still be alive!

Here we see that the lifetime system is much more coarse than the reference
semantics we're actually interested in preserving. For the most part, *that's
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