Learn Ownerships

src/ownership/strings.rs

@@ -0,0 +1,31 @@
+fn main() {
+    let mut s = String::from("Hello");
+    s.push_str(", World!");
+    println!("{}", s);
+
+    let s2 = "Hello";
+    //s2.push_str(", World!"); Error
+    println!("{}", s2);
+
+    let s3 = s;
+    println!("{}", s3);
+    //println!("{}", s); The value is borrowed
+
+    let s4 = s3.clone();
+    println!("s3 = {}, s4 = {}", s3, s4);
+
+    let (s5, taille) = calculer_taille(s4);
+    println!("s5 = {}, taille = {}", s5, taille);
+
+    let taille2 = taille_sans_possession(&s5);
+    println!("s5 = {}, taille = {}", s5, taille2);
+}
+
+fn calculer_taille(s: String) -> (String, usize) {
+    let taille = s.len();
+    (s, taille)
+}
+
+fn taille_sans_possession(s: &String) -> usize {
+    s.len()
+}