Enums

Enums represent a set of named constants. They can have an underlying type (default is int) and even support inheritance.

Basic Enums

enum Thing {
    Fruit,
    Veg
}

var t = Thing.Fruit
if (t == Thing.Fruit) {
    printf("It's a fruit!\n")
}

Underlying Types

Specify a different underlying type for memory efficiency:

enum Color : u8 {
    Red,    // 0

    Green,  // 1

    Blue    // 2

}

enum LargeEnum : ushort {
    Value1,
    Value2,
    Value3
}

Custom Values

Set explicit values for enum members:

enum StartingValue {
    First = 50,   // 50

    Second,       // 51

    Third,        // 52

    Fourth = 10,  // 10

    Fifth,        // 11

    Sixth         // 12

}

Negative Values

Enums can have negative values:

enum SignedValues {
    NegFirst = -10,  // -10

    NegSecond,       // -9

    NegThird         // -8

}

Member Aliasing

Reference other enum members:

enum MultiNum {
    First,
    Second,
    AnotherFirst = First,   // Same value as First

    AnotherSecond = Second  // Same value as Second

}

Enum Inheritance

Extend an existing enum with new values:

enum Thing {
    Fruit,  // 0

    Veg     // 1

}

// Extends Thing, continues numbering

enum Anything : Thing {
    Space,     // 2

    Universe,  // 3

    Garbage    // 4

}

// Anything has all values from Thing plus its own

Anything.Fruit     // 0

Anything.Universe  // 3

Enums in Namespaces

namespace colors {
    enum favorite {
        red,
        green,
        blue
    }
}

var c = colors::favorite.red