From f0f6a72101be5ec0376db012b77c0e2bf014fdd2 Mon Sep 17 00:00:00 2001
From: AramJonghu <aramjonghu@tutamail.com>
Date: Sun, 26 Jul 2026 01:22:27 +0200
Subject: [PATCH] progress(enums + strings): ___

---
 exercises/08_enums/enums1.rs     |  5 +++++
 exercises/08_enums/enums2.rs     |  5 +++++
 exercises/08_enums/enums3.rs     |  7 +++++++
 exercises/09_strings/strings1.rs |  2 +-
 exercises/09_strings/strings2.rs |  2 +-
 exercises/09_strings/strings3.rs |  5 +++++
 exercises/09_strings/strings4.rs | 18 +++++++++---------
 7 files changed, 33 insertions(+), 11 deletions(-)

diff --git a/exercises/08_enums/enums1.rs b/exercises/08_enums/enums1.rs
index c0d0c30..c45ac7a 100644
--- a/exercises/08_enums/enums1.rs
+++ b/exercises/08_enums/enums1.rs
@@ -1,6 +1,11 @@
 #[derive(Debug)]
 enum Message {
     // TODO: Define a few types of messages as used below.
+    Resize,
+    Move,
+    Echo,
+    ChangeColor,
+    Quit,
 }
 
 fn main() {
diff --git a/exercises/08_enums/enums2.rs b/exercises/08_enums/enums2.rs
index d70f639..ba62b53 100644
--- a/exercises/08_enums/enums2.rs
+++ b/exercises/08_enums/enums2.rs
@@ -7,6 +7,11 @@ struct Point {
 #[derive(Debug)]
 enum Message {
     // TODO: Define the different variants used below.
+    Resize { width: u64, height: u64 },
+    Move(Point),
+    Echo(String),
+    ChangeColor(u64, u64, u64),
+    Quit,
 }
 
 impl Message {
diff --git a/exercises/08_enums/enums3.rs b/exercises/08_enums/enums3.rs
index cb05f65..b500af8 100644
--- a/exercises/08_enums/enums3.rs
+++ b/exercises/08_enums/enums3.rs
@@ -46,6 +46,13 @@ impl State {
     fn process(&mut self, message: Message) {
         // TODO: Create a match expression to process the different message
         // variants using the methods defined above.
+        match message {
+            Message::Resize { width, height } => self.resize(width, height),
+            Message::Move(point) => self.move_position(point),
+            Message::Echo(s) => self.echo(s),
+            Message::ChangeColor(red, green, blue) => self.change_color(red, green, blue),
+            Message::Quit => self.quit(),
+        }
     }
 }
 
diff --git a/exercises/09_strings/strings1.rs b/exercises/09_strings/strings1.rs
index 6abdbb4..06755aa 100644
--- a/exercises/09_strings/strings1.rs
+++ b/exercises/09_strings/strings1.rs
@@ -1,6 +1,6 @@
 // TODO: Fix the compiler error without changing the function signature.
 fn current_favorite_color() -> String {
-    "blue"
+    "blue".to_string()
 }
 
 fn main() {
diff --git a/exercises/09_strings/strings2.rs b/exercises/09_strings/strings2.rs
index 93d9cb6..2ed89c5 100644
--- a/exercises/09_strings/strings2.rs
+++ b/exercises/09_strings/strings2.rs
@@ -6,7 +6,7 @@ fn is_a_color_word(attempt: &str) -> bool {
 fn main() {
     let word = String::from("green"); // Don't change this line.
 
-    if is_a_color_word(word) {
+    if is_a_color_word(&word) {
         println!("That is a color word I know!");
     } else {
         println!("That is not a color word I know.");
diff --git a/exercises/09_strings/strings3.rs b/exercises/09_strings/strings3.rs
index f5e45b0..59f6ac3 100644
--- a/exercises/09_strings/strings3.rs
+++ b/exercises/09_strings/strings3.rs
@@ -1,13 +1,18 @@
 fn trim_me(input: &str) -> &str {
     // TODO: Remove whitespace from both ends of a string.
+    input.trim()
 }
 
 fn compose_me(input: &str) -> String {
     // TODO: Add " world!" to the string! There are multiple ways to do this.
+    let world = " world!";
+    let s: String = input.to_owned() + world;
+    s
 }
 
 fn replace_me(input: &str) -> String {
     // TODO: Replace "cars" in the string with "balloons".
+    input.replace("cars", "balloons")
 }
 
 fn main() {
diff --git a/exercises/09_strings/strings4.rs b/exercises/09_strings/strings4.rs
index 43976a6..00942ce 100644
--- a/exercises/09_strings/strings4.rs
+++ b/exercises/09_strings/strings4.rs
@@ -13,23 +13,23 @@ fn string(arg: String) {
 // Your task is to replace `placeholder(…)` with either `string_slice(…)`
 // or `string(…)` depending on what you think each value is.
 fn main() {
-    placeholder("blue");
+    string_slice("blue");
 
-    placeholder("red".to_string());
+    string("red".to_string());
 
-    placeholder(String::from("hi"));
+    string(String::from("hi"));
 
-    placeholder("rust is fun!".to_owned());
+    string("rust is fun!".to_owned());
 
-    placeholder(format!("Interpolation {}", "Station"));
+    string(format!("Interpolation {}", "Station"));
 
     // WARNING: This is byte indexing, not character indexing.
     // Character indexing can be done using `s.chars().nth(INDEX)`.
-    placeholder(&String::from("abc")[0..1]);
+    string_slice(&String::from("abc")[0..1]);
 
-    placeholder("  hello there ".trim());
+    string_slice("  hello there ".trim());
 
-    placeholder("Happy Monday!".replace("Mon", "Tues"));
+    string("Happy Monday!".replace("Mon", "Tues"));
 
-    placeholder("mY sHiFt KeY iS sTiCkY".to_lowercase());
+    string("mY sHiFt KeY iS sTiCkY".to_lowercase());
 }