Feb 3, 2022 · 77 I'm bridging the sync/async worlds in Swift and doing incremental adoption of async/await. I'm trying to invoke an async function that returns a value from a non async …

8 Swift’s nil is not the same as nil in Objective-C. In Objective-C, nil is a pointer to a non-existent object. In Swift, nil is not a pointer—it is the absence of a value of a certain type. Optionals of …

May 21, 2015 · The question of what purpose in serves has been well-answered by other users here; in summary: in is a keyword defined in the Swift closure syntax as a separator between …

415 In Swift 2 and onwards it's possible to add default implementations of a protocol. This creates a new way of optional methods in protocols.

The Swift Docs on Control Flow explain the idea behind that: Using a guard statement for requirements improves the readability of your code, compared to doing the same check with …

Jul 3, 2014 · 0 SWIFT 4.2 Sometimes this happened just because there is space in slug OR absence of URL encoding for parameters passing through API URL.

I need to read and write data to/from a text file, but I haven't been able to figure out how. I found this sample code in the Swift's iBook, but I still don't know how to write or read data. import...

2 Swift 5.5 But this might work in earlier versions. I'm frequently replacing because I want to replace "any whitespace or -" with a _ or something like that. This extension on string lets me …

With Swift 5, Foundation offers many ways to get the hour value from a Date object. According to your needs, you may choose one of the four following Playground code snippets.

Jun 5, 2014 · surprising Swift doesn't seem to support native string formatting in print (). Although this might seem trivial, this type of solution has some efficiency concerns that it create a String …