let values = #{};
values["first"] = "bar";
values["second"] = 42;

dbg!(values["first"]);
dbg!(values.second); // items be accessed like struct fields.

if let Some(key) = values.get("not a key") {
    dbg!(key);
} else {
    println!("key did not exist");
}

for entry in values {
    dbg!(entry);
}
