Swift countElements() return incorrect value when

Question

let str1 = "                

            

标签： ios swift unicode emoji countelements

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Answer 1

Update for Swift 4 (Xcode 9)

As of Swift 4 (tested with Xcode 9 beta) grapheme clusters break after every second regional indicator symbol, as mandated by the Unicode 9 standard:

let str1 = "                                                                    

                                                        
            

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Answer 2

Here's how I solved that problem, for Swift 3:

let str = "                                                                    

                                                        
            

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