Rust 1.29.2

# Match

There is a new edition of the book and this is an old link.

> `match` allows us to compare a value against a series of patterns and then execute code based on which pattern matches. Patterns can be made up of literal values, variable names, wildcards, and many other things.

    enum Coin {
        Penny,
        Nickel,
        Dime,
        Quarter,
    }

    fn value_in_cents(coin: Coin) -> u32 {
        match coin {
            Coin::Penny => 1,
            Coin::Nickel => 5,
            Coin::Dime => 10,
            Coin::Quarter => 25,
        }
    }Run

Here are the relevant sections in the new and old books:

- In the second edition: Ch 6.02 — The `match` Control Flow Operator
- In the second edition: Ch 18.00 — Patterns
- In the first edition: Ch 3.14 — Match