enum SpreadsheetCell {
    Int(i32),
    Float(f32),
    Text(String),
}

fn main() {
    println!("Hello, world!");
    let mut v = vec![1, 2, 3, 4];

    v.push(5);
    v.push(6);
    v.push(7);

    let Some(&x) = v.get(3) else {
        println!("index not found");
        return;
    };

    for i in &v {
        print!("{i}");
    }
    println!("");

    for i in &mut v {
        *i = *i * 10;
    }

    for i in &v {
        print!("{i}");
    }
    println!("");

    println!("this is the value of the 100th index {x}");

    let _row = vec![
        SpreadsheetCell::Int(3),
        SpreadsheetCell::Float(3.14),
        SpreadsheetCell::Text("bodo".into()),
    ];

    let _s1 = String::from("Hello");
    let _s2 = "World".to_string();
    let _s1: String = _s1 + &_s2;
    println!("THis is: {_s1}");
    let _s3 = "FooBar".to_string();
    let _s = format!("{_s1} {_s3}");
    println!("{}", _s);

    use std::collections::HashMap;

    let mut scores = HashMap::new();

    scores.insert("blue".to_string(), 1);
    scores.insert("red".to_string(), 3);

    let score_blue = scores.get(&"blue".to_string()).copied().unwrap_or(0);
    let score_red = scores.get(&"red".to_string()).copied().unwrap_or(0);

    println!("this is blue: {}, this is red {}", score_blue, score_red);
    for (k, v) in &scores {
        println!("team {k}: {v} scores");
    }

    scores.insert("green".to_string(), 10);

    scores.insert(String::from("Blue"), 10);
    scores.insert(String::from("Blue"), 25);

    println!("{scores:?}");

    scores.entry("blue".to_string()).or_insert(100);
    scores.entry("yellow".to_string()).or_insert(100);

    println!("{scores:?}");
}