Rust 1.78.0
9b00956e5

Enums

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

Enums allow you to define a type by enumerating its possible values.

enum IpAddrKind {
    V4,
    V6,
}

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

• in the current edition: Ch 6.01 — Defining an Enum
• In the first edition: Ch 3.13 — Enums