Enum

Enum is a type that has a fixed set of values. It is useful to represent a set of related constants.

TODO: Explain in some language it is only integer while in some language it can be string and include user defined fields.

• Java Enum
• Dart Enum
• TypeScript Enum
• Go Enum
• C Enum
• Rust Enum

Java

public enum Color {
    RED, GREEN, BLUE
}

Dart

enum Color { red, green, blue }

Go

Go does not have builtin enum.

type Color int

const (  // iota is reset to 0
        Red Color = iota  // Red == 0
        Yellow
        Blue
)