Rust_Data_Type_String

String Concatenation

String.push_str(&str);
String.push_str(&String);
operator + (String + &str)
format macro (String+ String) or (&str+ &str)

String + &str

fn main() {
    let mut owned_string: String = "hello ".to_owned();
    let borrowed_string: &str = "world";
    
    owned_string.push_str(borrowed_string);
    println!("{owned_string}");
}

String + String

fn main() {
    let mut owned_string: String = "hello ".to_owned();
    let another_owned_string: String = "world".to_owned();
    
    owned_string.push_str(&another_owned_string);
    println!("{owned_string}");
}

use + operator to combine String and &str

fn main() {
    let owned_string: String = "hello ".to_owned();
    let borrowed_string: &str = "world";
    
    let new_owned_string = owned_string + borrowed_string;
    println!("{new_owned_string}");
}

Concate 2 %str by format macro

fn main() {
    let borrowed_string: &str = "hello ";
    let another_borrowed_string: &str = "world";
    
    let together = format!("{borrowed_string}{another_borrowed_string}");
    println!("{}", together);
}

Concate 2String by format macro

fn main() {
    let owned_string: String = "hello ".to_owned();
    let another_owned_string: String = "world".to_owned();
    
    let together = format!("{owned_string}{another_owned_string}");
    println!("{}", together);
}

use + operator to combine String and &str

fn main() {
    let owned_string: String = "hello ".to_owned();
    let borrowed_string: &str = "world";
    
    let together = owned_string.clone() + borrowed_string;
    println!("{together}");
}

String Concatenation​

String Concatenation