Created
December 22, 2015 21:32
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Playing with lazy and "real" flat maps
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| let mixedArray = [1, "2", 3, "4", 5, 6] | |
| let resultA = mixedArray.flatMap({ $0 as? String }) | |
| resultA.first | |
| let resultB = mixedArray.lazy.flatMap({ $0 as? String }) | |
| resultB.first |
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