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 Structs Stored Properties

Raymond Espinoza
Raymond Espinoza
1,989 Points

stored properties

How do you write out a double for the amount : "500.0" ?

1 Answer

Nathan Tallack
Nathan Tallack
22,160 Points

Consider the code below.

struct Expense {
    var description: String  // Stored property
    var amount: Double  // Stored property
}

var travel = Expense(description: "Flight to Cupertino", amount:500.00)

The great thing about struct types is that you can reference the stored properties easily, and change them too.

Consider the following examples.

print(travel.description)  // This would print out "Flight to Cupertino"
travel.amount = 550.00  // This would change the amount property to 550.00

This makes it really easy to have a single value (travel in this case) hold multiple stored values. :)