Created
June 9, 2014 10:35
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| import Foundation | |
| class GrayShark { | |
| var name:String | |
| var howSwim:String | |
| init(name:String, howSwim:String) { | |
| self.name = name | |
| self.howSwim = howSwim; | |
| } | |
| } | |
| func letSharkSwim(shark:GrayShark) -> String { | |
| return "\(shark.name) swims like '\(shark.howSwim)'." | |
| } | |
| // OK, "The Average Shark swims like Swim Swim Swim Lurk" | |
| letSharkSwim(GrayShark(name:"The Average Shark", howSwim:"Swim Swim Swim Lurk")) | |
| // Error | |
| // Could not find an overload for '__conversion' that accepts the supplied arguments | |
| //letSharkSwim(nil) | |
| // Custom Conversion Example | |
| extension NilType { | |
| @conversion func __conversion() -> (GrayShark) { | |
| return GrayShark(name:"Gray Shark", howSwim:"UNBELIEVABLE POWERRRRRRRR") | |
| } | |
| } | |
| // OK, "Gray Shark swims like UNBELIEVABLE POWERRRRRRRR" | |
| letSharkSwim(nil) |
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