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doc: describe what enums are in docs.md (#23750)

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Delyan Angelov 2025-02-17 18:54:19 +02:00 • committed by GitHub
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@ -3466,11 +3466,14 @@ This is a special case of a [sum type](#sum-types) declaration.
### Enums ### Enums
An enum is a group of constant integer values, each having its own name,
whose values start at 0 and increase by 1 for each name listed.
For example:
```v ```v
enum Color as u8 { enum Color as u8 {
red red // the default start value is 0
green green // the value is automatically incremented to 1
blue blue // the final value is now 2
} }
mut color := Color.red mut color := Color.red
@ -3482,6 +3485,7 @@ match color {
.green { println('the color was green') } .green { println('the color was green') }
.blue { println('the color was blue') } .blue { println('the color was blue') }
} }
println(int(color)) // prints 1
``` ```
The enum type can be any integer type, but can be omitted, if it is `int`: `enum Color {`. The enum type can be any integer type, but can be omitted, if it is `int`: `enum Color {`.