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fix(typo): correct punctuation in ch15-06-reference-cycles.md #4155

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Dec 10, 2024
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fix(typo): correct punctuation in ch15-06-reference-cycles.md #4155

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2 changes: 1 addition & 1 deletion src/ch15-06-reference-cycles.md
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Expand Up @@ -231,7 +231,7 @@ We still have `leaf` as one of the children of `branch`. Once we have the
reference to its parent. We use the `borrow_mut` method on the
`RefCell<Weak<Node>>` in the `parent` field of `leaf`, and then we use the
`Rc::downgrade` function to create a `Weak<Node>` reference to `branch` from
the `Rc<Node>` in `branch.`
the `Rc<Node>` in `branch`.

When we print the parent of `leaf` again, this time we’ll get a `Some` variant
holding `branch`: now `leaf` can access its parent! When we print `leaf`, we
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