Iterating over enumeration values

Question

Say I have this enum in Ceylon:

abstract class Suit()
        of hearts | diamonds | clubs | spades {}

object hearts extends Suit() {}
object diamonds extends Suit() {}
object clubs extends Suit() {}
object spades extends Suit() {}

I would like to iterate over the values. In Java, I would do Suit.values(). Is there something similar in Ceylon?

I tried to define it my self, but that didn't work because there are no static members in Ceylon? Should I just define at the top level:

Suit[4] suites= [hearts, diamonds, clubs, spades];

http://stackoverflow.com/questions/19402031/ceylon-iterate-enumerated-instances — gdejohn, Jan 18 '16 at 21:10
I am at a loss as to how that question did not come up in my searches as it is as duplicate as any question could possibly be. Embarrassingly identical... — drhagen, Jan 18 '16 at 21:51

score 2 · Accepted Answer · answered Jan 18 '16 at 21:13

2

for (suit in `Suit`.caseValues) {
    // ...
}

Try online

Note: since this uses the metamodel, it’s somewhat slow – certainly not as fast as Enum.values(). Cache the result if you’re going to use it a lot.

answered Jan 18 '16 at 21:13

Lucas Werkmeister

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Iterating over enumeration values

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