Rust の to_owned() って何
to_owned()
https://doc.rust-lang.org/std/borrow/trait.ToOwned.html#tymethod.to_owned
例
fn main() { { let s1: &str = "foo"; let s2: &str = (&s1).to_owned(); println!("{}", s1); println!("{}", s2); } { let s1: String = "bar".to_string(); let s2: String = (&s1).to_owned(); println!("{}", s1); println!("{}", s2); } { let v1: Vec<i32> = vec![0, 1, 2, 3, 4, 5]; let v2: Vec<i32> = (&v1[1..3]).to_owned(); println!("{:?}", v1); println!("{:?}", v2); } }
foo foo bar bar [0, 1, 2, 3, 4, 5] [1, 2]