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June 9, 2020 16:51
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Generate an emoji using an object's memory address.
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| import Foundation | |
| // 1056 emoji in the range | |
| let emoji: [UnicodeScalar] = (0x1F300...0x1F9FF).compactMap { | |
| if let scalar = UnicodeScalar($0), scalar.properties.isEmoji { // see also: isEmojiPresentation | |
| return scalar | |
| } | |
| return nil | |
| } | |
| /// Generates an emoji using the object's memory address. | |
| func emoji<T: AnyObject>(from object: T) -> String { | |
| let address = Int(bitPattern: Unmanaged.passUnretained(object).toOpaque()) | |
| return String(emoji[address % emoji.count]) | |
| } | |
| // sample object: <UIViewController: 0x7ff4ffc.....> | |
| // output: 🍫 | |
| /* first attempt | |
| func emoji<T: AnyObject>(from x: T) -> String { | |
| let address = Int(bitPattern: Unmanaged.passUnretained(x).toOpaque()) | |
| if let scalar = UnicodeScalar(0x1F300 + address % (0x1F9FF - 0x1F300)) { | |
| return String(scalar) | |
| } | |
| return "" | |
| } */ | |
| // from the the range, 1044 are real emoji, the rest will show as [?] |
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