swift5 – Page 3 – Tarik Billa

What is the “some” keyword in Swift(UI)?

September 23, 2022 by Tarik

some View is an opaque result type as introduced by SE-0244 and is available in Swift 5.1 with Xcode 11. You can think of this as being a “reverse” generic placeholder. Unlike a regular generic placeholder which is satisfied by the caller: protocol P {} struct S1 : P {} struct S2 : P {} … Read more

How do I write dispatch_after GCD in Swift 3, 4, and 5?

September 15, 2022 by Tarik

The syntax is simply: // to run something in 0.1 seconds DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) { // your code here } Note, the above syntax of adding seconds as a Double seems to be a source of confusion (esp since we were accustomed to adding nsec). That “add seconds as Double” syntax works because deadline … Read more