Rust zápas řetězec
Příklady kódu
rust zápas řetězec
match stringthing.as_str() {
"a" => println!("0"),
"b" => println!("1"),
"c" => println!("2"),
_ => println!("something else!"),
}prohlášení rust match
#[derive(Debug)] // so we can inspect the state in a minute
enum UsState {
Alabama,
Alaska,
// --snip--
}
#[derive(Debug)]
enum Coin {
Penny,
Nickel,
Dime,
Quarter(UsState),
}
fn return_the_coin(coin:Coin) ->u8{
match coin{
Coin::Penny =>1,
Coin::Nickel =>10,
Coin::Dime =>15,
Coin::Quarter(state) =>{
println!("{:#?}",state);
25
}
}
}
fn main() {
let rtn=return_the_coin(Coin::Quarter(UsState::Alabama));
println!("{:#?}",rtn);
}
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