Enum (Enumerated Types)
Data type consisting of a set of named values called elements, members, enumeral, or enumerators of the type. The enumerator names are usually identifiers that behave as constants in the language.
Usage
Where fixed set of constants or ranges are required
Examples
- the four suits in a deck of playing cards may be four enumerators named Club, Diamond, Heart, and Spade, belonging to an enumerated type named suit. If a variable V is declared having suit as its data type, one can assign any of those four values to it.
- range of phones/laptops, colors, seasons, days of week.
Isn't it Literal Type?
While enums, like literal limit the set of values possible for a variable, they are not literal.
Enums group together Literal Types and give them semantic meaning.
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