fix(enums) make enum variants more consistent

closes #1545
This commit is contained in:
Matthias Richter 2023-11-14 08:19:15 +01:00
parent bc3808cf29
commit 77b687d501
4 changed files with 22 additions and 2 deletions

View file

@ -12,6 +12,7 @@ enum Message {
fn main() {
println!("{:?}", Message::Quit);
println!("{:?}", Message::Echo);
println!("{:?}", Message::Resize);
println!("{:?}", Message::Move);
println!("{:?}", Message::ChangeColor);
}

View file

@ -10,6 +10,12 @@ enum Message {
// TODO: define the different variants used below
}
#[derive(Debug)]
struct Point {
x: u8,
y: u8,
}
impl Message {
fn call(&self) {
println!("{:?}", self);
@ -18,7 +24,8 @@ impl Message {
fn main() {
let messages = [
Message::Move { x: 10, y: 30 },
Message::Resize { w: 10, h: 30 },
Message::Move(Point { x: 10, y: 15 }),
Message::Echo(String::from("hello world")),
Message::ChangeColor(200, 255, 255),
Message::Quit,

View file

@ -18,6 +18,8 @@ struct Point {
struct State {
color: (u8, u8, u8),
width: u8,
height: u8,
position: Point,
quit: bool,
message: String,
@ -36,6 +38,11 @@ impl State {
self.message = s
}
fn resize(&mut self, w: u8, h: u8) {
self.width = w;
self.height = h;
}
fn move_position(&mut self, p: Point) {
self.position = p;
}
@ -55,16 +62,21 @@ mod tests {
fn test_match_message_call() {
let mut state = State {
quit: false,
width: 0,
height: 0,
position: Point { x: 0, y: 0 },
color: (0, 0, 0),
message: "hello world".to_string(),
};
state.process(Message::ChangeColor(255, 0, 255));
state.process(Message::Echo(String::from("Hello world!")));
state.process(Message::Resize { w: 10, h: 30 });
state.process(Message::Move(Point { x: 10, y: 15 }));
state.process(Message::Quit);
assert_eq!(state.color, (255, 0, 255));
assert_eq!(state.width, 10);
assert_eq!(state.height, 30);
assert_eq!(state.position.x, 10);
assert_eq!(state.position.y, 15);
assert_eq!(state.quit, true);

View file

@ -468,7 +468,7 @@ path = "exercises/08_enums/enums2.rs"
mode = "compile"
hint = """
You can create enumerations that have different variants with different types
such as no data, anonymous structs, a single string, tuples, ...etc"""
such as anonymous structs, structs, a single string, tuples, no data, ...etc"""
[[exercises]]
name = "enums3"