hs-rust-learn 0.1.0

hs's rust test learn
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

fn main () {
    let data = "hello world";
    let z = data.to_string();
    
    let mut m = String::from("mdn");
    // m[0] = "f";
    m.push_str("z");
    m.push_str(&z);
    m.push('!');
    println!("{}", m);

    let q = format!("{}{}", m, z);
    println!("{}", q);
    println!("{}", m);

    println!("------");

    let s1 = String::from("uvxy");
    for ch in s1.chars() {
        println!("{}", ch);
    }
    let s1 = &s1[1..4];
    println!("{}", s1);
}