lifetimes3 solution

exercises/16_lifetimes/lifetimes3.rs

@@ -1,16 +1,15 @@
 // Lifetimes are also needed when structs hold references.
 
+// TODO: Fix the compiler errors about the struct.
 struct Book {
     author: &str,
     title: &str,
 }
 
 fn main() {
-    let name = String::from("Jill Smith");
-    let title = String::from("Fish Flying");
     let book = Book {
-        author: &name,
+        author: "George Orwell",
-        title: &title,
+        title: "1984",
     };
 
     println!("{} by {}", book.title, book.author);

rustlings-macros/info.toml

@@ -843,9 +843,7 @@ inner block:
 name = "lifetimes3"
 dir = "16_lifetimes"
 test = false
-hint = """
+hint = """Let the compiler guide you :)"""
-If you use a lifetime annotation in a struct's fields, where else does it need
-to be added?"""
 
 # TESTS
 

solutions/16_lifetimes/lifetimes3.rs

@@ -1 +1,18 @@
-// Solutions will be available before the stable release. Thank you for testing the beta version 🥰
+// Lifetimes are also needed when structs hold references.
+
+struct Book<'a> {
+    //     ^^^^ added a lifetime annotation
+    author: &'a str,
+    //       ^^
+    title: &'a str,
+    //      ^^
+}
+
+fn main() {
+    let book = Book {
+        author: "George Orwell",
+        title: "1984",
+    };
+
+    println!("{} by {}", book.title, book.author);
+}