32 lines
768 B
Swift
32 lines
768 B
Swift
import Foundation
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var greeting = "Hello, playground"
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let sss = ["1", "2", "3"].map({ "'\($0)'"
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}).joined(separator: ",")
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print("value in (\(sss))")
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let number = NSNumber(7.0)
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let number2 = NSNumber(7)
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print("number is double: \(number is Double)")
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print("number is int: \(number is Int)")
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print("number value: \(number)")
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print("number type: \(number.objCType)")
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extension NSNumber {
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var type: CFNumberType {
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return CFNumberGetType(self as CFNumber)
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}
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}
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print("number type: \(number.type)")
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print("number2 type: \(number2.type)")
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let number3 = 7.0
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print("number3 is Double: \(number3 is Double)")
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print("number3 is Int: \(number3 is Int)")
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print("number3 is NSNumber: \(number3 is NSNumber)")
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