scalaenum

Type Members

1. abstract class Enum extends Serializable

   

   Defines a finite set of values specific to the enumeration.

   Defines a finite set of values specific to the enumeration. Typically these values enumerate all possible forms something can take and provide a lightweight alternative to case classes.

   Each call to a Value method adds a new unique value to the enumeration. To be accessible, these values are usually defined as val members of the evaluation.

   All values in an enumeration share a common, unique type defined as the abstract Value type member of the enumeration (Value selected on the stable identifier path of the enumeration instance). Besides, in contrast to Scala's built-in Enumeration, the Value type member can be extended in subclasses, such that it is possible to mix-in traits, for example. In this case, make sure to make the constructor of Value private. Example:

   // adding methods to Value
   class Day private extends Day.Val {
     def isWorkingDay: Boolean = this != Day.Saturday && this != Day.Sunday
   }
   object Day extends Enum {
     type Value = Day
     val Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday = new Day
   }
   
   // usage:
   Day.values filter (_.isWorkingDay) foreach println
   // output:
   // Monday
   // Tuesday
   // Wednesday
   // Thursday
   // Friday

   Annotations

   @SerialVersionUID()