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 Enum Members and Raw Values

what exactly is an instance ?

I want to know what exactly means the creation of a instance from a enum

3 Answers

In this case an instance is a constant or variable that you can assign to some enum value.

enum Day {
    case Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
}

Now you can assign some variable or constant to your enum's value using var or let:

var today = Day.Sunday

Now today is an instance assigned to enum value.

Then you can also reassign your (already existing) instance to a different value:

today = .Saturday

Thanks for the explanation.

A simple answer would be that it is a single member of given enum/class.

Thank you !!!