Created
March 16, 2017 13:55
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| // Declare non-optionals variable | |
| var notToday : String = "Tomorrow" | |
| // Can't set non-optionals variable to nil | |
| notToday = nil // Compile error | |
| // Declare optionals variables | |
| var dafug : String? = "Dafug" | |
| var steps : Int? = 10 | |
| // Set to nil | |
| dafug = nil | |
| steps = nil |
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