swift Archives - Page 6 of 8

I’ve been updating some of my old code and answers with Swift 3 but when I got to Swift Strings and Indexing with ...

How do I get a reference to the app delegate in Swift? Ultimately, I want to use the reference to access the managed ...

My Swift program is crashing with EXC_BAD_INSTRUCTION and one of the following similar errors. What does this error mean, and how do I ...

How can I get the nth character of a string? I tried bracket(...

Briefly, while using Xcode 9 Beta, I have run into the following warning: The use of Swift 3 @objc inference in Swift 4 ...

In WWDC 2014 session 403 Intermediate Swift and transcript, there was the following slide The speaker said in that case, if we don’t ...

I realize the Swift book provided an implementation of a random number generator. Is the best practice to copy and paste this implementation ...

Why would you create a “Implicitly Unwrapped Optional” vs creating just a regular variable or constant? If you know that it can be ...

Can anyone tell me how to round a double value to x number of decimal places in Swift? I have: var totalWorkTimeInHours = ...

What’s the difference between print, NSLog and println and when should I use each? For example, in Python if I wanted to print ...