Lulu Enums — Count and Iteration

Introduction

The Enum class has two methods that allow you to count and iterate over the enumerators.

Enum:count

The Enum:count() method returns the number of enumerators in the Enum.

Example

ENUM 'Suit' { 'Clubs', 'Diamonds', 'Hearts', 'Spades' }
putln("There are %d enumerators in the enum %q.", Suit:count(), Suit:type())

This outputs:

There are 4 enumerators in the enum "Suit".

Enum:iter

The Enum:iter() method returns an iterator that traverses the enumerators of the Enum in sorted order.

Example

ENUM 'Suit' { 'Clubs', 'Diamonds', 'Hearts', 'Spades' }
for e in Suit:iter() do
    putln("Enumerator: %s has ordinal value %d", e, e:tonumber())
end

This outputs:

Enumerator: Clubs has ordinal value 1
Enumerator: Diamonds has ordinal value 2
Enumerator: Hearts has ordinal value 3
Enumerator: Spades has ordinal value 4

See Also

Enum:new
ENUM