Created
May 3, 2021 07:13
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Flatten exampe 1
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| var dict = [Int: Int?]() | |
| let val = dict[0] // Int?? | |
| func f(_ optionalInt: Int?) -> Int { optionalInt ?? 0 } | |
| //f(val) // compiler error | |
| f(val.flatten()) // works |
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