A Vec of Enums containing different types

vec_enum_example.rs

fn main() {
    // make a type Cell that contains a few different primitive types
    enum Cell {
        Text(String),
        Num(i32),
        Float(f32)
    }

    // make a list of them
    let row = vec![
        Cell::Text(String::from("ItemID")),
        Cell::Text(String::from("CustomerID")),
        Cell::Num(42),
        Cell::Float(99.99),
        Cell::Text(String::from("City"))
    ];

    // iterate over the list and do something with the values
    let mut sum: f32 = 0.0;
    let mut qty: i32 = 1;
    let mut customer_data = String::new();

    for x in row.iter() {
        match x {
            Cell::Text(s) => customer_data.push_str(s),
            Cell::Num(n) => qty *= n,
            Cell::Float(n) => sum += n,
        }
    }

    assert_eq!(customer_data, "ItemIDCustomerIDCity");
    assert_eq!(sum, 99.99);
    assert_eq!(qty, 42);
}