Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 48 insertions, 0 deletions

diff --git a/src/doc/book/redirects/ufcs.md b/src/doc/book/redirects/ufcs.md
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+% Universal Function Call Syntax
+
+<small>There is a new edition of the book and this is an old link.</small>
+
+> Rust cannot prevent a trait from having a method with the same name as another trait’s method, nor can it prevent us from implementing both of these traits on one type.
+> In order to be able to call each of the methods with the same name, then, we need to tell Rust which one we want to use.
+
+```rust
+trait Pilot {
+    fn fly(&self);
+}
+
+trait Wizard {
+    fn fly(&self);
+}
+
+struct Human;
+
+impl Pilot for Human {
+#     fn fly(&self) {
+#         println!("This is your captain speaking.");
+#     }
+}
+
+impl Wizard for Human {
+#     fn fly(&self) {
+#         println!("Up!");
+#     }
+}
+
+impl Human {
+#     fn fly(&self) {
+#         println!("*waving arms furiously*");
+#     }
+}
+
+fn main() {
+    let person = Human;
+    Pilot::fly(&person);
+    Wizard::fly(&person);
+    person.fly();
+}
+```
+
+---
+
+You can find the latest version of this information
+[here](ch19-03-advanced-traits.html#fully-qualified-syntax-for-disambiguation-calling-methods-with-the-same-name).
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