1 files changed, 25 insertions, 0 deletions
diff --git a/src/doc/book/redirects/borrow-and-asref.md b/src/doc/book/redirects/borrow-and-asref.md
new file mode 100644
index 000000000..6541e59ba
--- /dev/null
+++ b/src/doc/book/redirects/borrow-and-asref.md
@@ -0,0 +1,25 @@
+% Borrow and AsRef
+
+<small>There is a new edition of the book and this is an old link.</small>
+
+> A cheap reference-to-reference conversion.
+> Used to convert a value to a reference value within generic code.
+
+```rust
+fn is_hello<T: AsRef<str>>(s: T) {
+   assert_eq!("hello", s.as_ref());
+}
+```
+
+---
+
+This chapter does not exist in [the second edition][2].
+The best place to learn more about this is [the Rust documentation][3].
+
+* **[In the Rust documentation: `convert::AsRef`][3]**
+* <small>[In the first edition: Ch 4.10 — Borrow and AsRef][1]</small>
+
+
+[1]: https://doc.rust-lang.org/1.30.0/book/first-edition/borrow-and-asref.html
+[2]: index.html
+[3]: ../std/convert/trait.AsRef.html