Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Swift Enums and Structs Enums Review Enums

Posted by Sahil Gangele
Sahil Gangele
6,851 Points

Explanation of a Question

I don't understand this question:

What is the data type of the constant today? let today = Day(rawValue: 1)

I thought when you create an enum, you give it a type by doing this:

enum Day { // member variables } I don't understand how it is an optional type. Could you give an in-depth explanation of this?

Thanks, Sahil Gangele

1 Answer

anthonypaulino2
anthonypaulino2
2,068 Points
anthonypaulino2
anthonypaulino2
2,068 Points

When you create an Enum you are making a new data type. In this case the data type would be Day, and all the members of Day, are data type Day. Hope that makes sense to you.