[Rust] String 예제 (17일차)

 

<String 예제_1>

fn main() {
    let mut a = String::new();

    a = a + "Rust on running";

    println!("{}", a);

    let data = "initial contents";

    let s = data.to_string();

    println!("{}", s);

    // the method also works on a literal directlys:
    let s = "finale contents".to_string();

    println!("{}", s);
}

 

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<String 예제_2>

fn main() {
    let mut s = String::from("foo");
    s.push_str("bar");

    println!("{}", s);

    let mut s1 = String::from("foo");
    let s2 = "bar";
    s1.push_str(&s2);

    println!("s2 is {}", s2);

    let mut dm = String::from("lo");
    dm.push('l');

    println!("{}", dm);
}

 

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<String 예제_3>

fn main() {
    // Creating a new string
    let my_string = String::new();
    println!("{}", my_string);

    // Creating a string from a string literal
    let my_string = "hello".to_string();
    println!("{}", my_string);

    // Concatenating two strings
    let hello = "hello".to_string();
    let world = "world".to_string();
    let hello_world = hello + " " + &world;
    println!("{}", hello_world);

    // Iterating over the characters in a string
    let hello = "hello".to_string();
    for c in hello.chars() {
        println!("{}", c);
    }

    // Accessing a specific character in a string
    let hello = "hello".to_string();
    let _c = hello.chars().nth(1);

    // Splitting a string into a vector of substrings
    let s = "a b c d e".to_string();
    let v : Vec<&str> = s.split(' ').collect();
    println!("{}", v[0]);
}

 

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<참조 1> https://rinthel.github.io/rust-lang-book-ko/ch08-02-strings.html

<참조 2> chatGPT