update

Author: hhstore

crates/rs-101/basic/src/bin/ex04a.rs

@@ -0,0 +1,15 @@
+fn main() {
+    let mut vec = vec!["Java", "Rust", "Python"];
+    for str in vec.iter_mut() {
+        let &mut cs = str;
+        match cs {
+            "Rust" => {
+                *str = "Niubility";
+                println!("{}", str);
+            },
+            _ => println!("{}", str),
+        }
+    }
+
+    println!("{:?}", vec);
+}

crates/rs-101/basic/src/bin/ex04b.rs

@@ -0,0 +1,16 @@
+fn main() {
+    let mut vec = vec!["Java".to_string(), "Rust".to_string(), "Python".to_string()];
+    let mut vi = vec.iter_mut();
+
+    while let Some(cs) = vi.next() {
+        match cs.as_str() {
+            "Rust" => {
+                *cs = "Niubility".to_string();
+                println!("{}", cs);
+            },
+            _ => println!("{}", cs),
+        }
+    }
+
+    println!("{:?}", vec);
+}

crates/rs-101/basic/src/bin/ex04c.rs

@@ -0,0 +1,14 @@
+fn main() {
+    let mut vec = ["Java".to_string(), "Rust".to_string(), "Python".to_string()];
+    for mut str in vec.iter_mut() {
+        match str.as_str() {
+            "Rust" => {
+                *str = "Niubility".to_string();
+                println!("{}", str);
+            },
+            _ => println!("{}", str),
+        }
+    }
+
+    println!("{:?}", vec);
+}