Functions and Properties in enums

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Enum classes can also declare members (i.e. properties and functions). A semicolon (;) must be placed between the last enum object and the first member declaration.

If a member is abstract, the enum objects must implement it.

enum class Color {
    RED {
        override val rgb: Int = 0xFF0000
    },
    GREEN {
        override val rgb: Int = 0x00FF00
    },
    BLUE {
        override val rgb: Int = 0x0000FF
    }

    ;

    abstract val rgb: Int

    fun colorString() = "#%06X".format(0xFFFFFF and rgb)
}

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