swift4 Archives - IT Nursery

How can I use String substring in Swift 4? ‘substring(to:)’ is deprecated: Please use String slicing subscript with a ‘partial range from’ operator

I have the following simple code written in Swift 3: let str = "Hello, playground" let index = str.index(of: ",")! let newStr = ...

May 13, 2022
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How do I write dispatch_after GCD in Swift 3, 4, and 5?

In Swift 2, I was able to use dispatch_after to delay an action using grand central dispatch: var dispatchTime: dispatch_time_t = dispatch_time(DISPATCH_TIME_NOW, Int64(0.1 ...

May 4, 2022
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The use of Swift 3 @objc inference in Swift 4 mode is deprecated?

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

May 3, 2022
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