Norwae

class ConcurrentModification {
    public static void main(String[] args) {
        var list = new ArrayList<>(Arrays.asList("A", "B", "C"));

        for (var str : list) {
            System.out.println("Doubling " + str);
            list.add(str + str);
        }
    }
}

Norwae

fn reference() -> u32 {
    let x: u32 = 10;
    let ref y = &x; // reference to x
    let z: &u32;

    {
        let short_lived: u32 = 82;
        z = &short_lived;
    }

Norwae

fn destruction() -> String{
    let string1 = String::from("Hello World");
    let string2 = String::new();
    let string3 = string2; // string2 moved to string3, no longer valid

    for i in 0..32 {
        let another_string = String::from("Yellow Submarine");
        do_something(another_string); // another_string "given away" here, no longer our concern
    }

Norwae

fn match_it(x: Option<i32>, flag: bool) -> i32 {
    match x {
        None => 0,
        Some(3) => 3,
        Some(_) if !flag => 450,
        Some(x) if x > 900 => 900,
        _ => -1
    }
}

Norwae

fn loops(limit: u32, values: Vec<i32>, condition: bool) {
    // while (condition)
    while condition {
        
    }
    
    // for (var i: values)  
    for i in values {
        
    }

Norwae

fn calculate(x: i64, y: f64, z: i32) -> f64 {
    let x = x + (if x < z as i64 { 2 } else { -5 });
    let q = y * x;

    q + z
}

Norwae

class Foo {
  double calculate(long x, double y, int z) {
    var delta = x < z ? 2 : -5;
    x += delta;

    var q = y * x;

    return q + z;
  }
}

Norwae

trait Stringify {
    fn stringify(self) -> String;
}

impl Stringify for String {
    fn stringify(self) -> String {
        self
    }
}

Norwae

pub struct Person {
    name: String,
    age: u32
}

impl Person {
    pub fn new(name: String) -> Self {
        Person { name, age: 18 }
    }
}

Norwae

public class Person implements Named {
  private String name;
  private int age;
  
  public Person(String name) {
    this.name = name;
    this.age = 18;
  }
  
  @Override public String getName() {