laurens/rust_the_book
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

enum: Add full example with match - access specific type params

Browse source
This commit is contained in:
laurens 2020-05-22 14:47:04 +02:00
parent 365f525e57
commit 086a603bab
1 changed files with 14 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

15
enum_example/src/main.rs
View file

@ -17,7 +17,16 @@ enum Message {
impl Message { impl Message {
fn print(&self) { fn print(&self) {
println!("calling message {:?}", self); println!("I don't do anything but can be called with any type: {:?}", self);
}
fn call(&self) {
match self {
Message::Quit => println!("Calling on a quit type!"),
Message::Move { x, y } => println!("Calling on a move type: {}, {}!", x, y),
Message::Write (s) => println!("Calling on a write type: {}!", s),
Message::ChangeColor (c) => println!("Calling on a color type: {:#?}!", c),
}
} }
} }
@ -29,10 +38,14 @@ fn main() {
let msg = Message::Quit; let msg = Message::Quit;
msg.print(); msg.print();
msg.call();
let msg = Message::Move{ x: 1, y:2}; let msg = Message::Move{ x: 1, y:2};
msg.print(); msg.print();
msg.call();
let msg = Message::Write(String::from("Hello enum")); let msg = Message::Write(String::from("Hello enum"));
msg.print(); msg.print();
msg.call();
let msg = Message::ChangeColor(Color(1,2,3)); let msg = Message::ChangeColor(Color(1,2,3));
msg.print(); msg.print();
msg.call();
} }