When you dive into .map and .flatMap ocean, you may be confused what is the difference. Consider such example: let arr = [1,2,3,4,5,6] print(arr.map{ return String($0 * 2)+”x” }) […]
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When you dive into .map and .flatMap ocean, you may be confused what is the difference. Consider such example: let arr = [1,2,3,4,5,6] print(arr.map{ return String($0 * 2)+”x” }) […]