Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

iOS Generics in Swift Generics and Protocols Constraints With Where Clauses

eberhapa
eberhapa
51,495 Points

HashableShoppingItem example

Whats the difference between

struct Checkout<Item: Hashable, ShoppingItem> {}

and

typealias HashableShopingItem = Hashable & ShoppingItem
struct Checkout<Item: HashableShopingItem > {}

Both are correct in the Playground?

Will Matthews
Will Matthews
8,127 Points

Just noticed the same thing. Did you find an answer to this?

eberhapa
eberhapa
51,495 Points

No, but i think there is no difference. Just syntactic sugar.