Swift Compiler optimization level for unit tests set to -O Apple LLVM 6.0/7.0 Optimization Level set to Fastest, Aggressive Optimizations -Ofast

Tests written in Objective-C

Shuffle 1,000,000 NSNumber objects in NSMutableArray

Version	Objective-C	Bridgeable Swift	Swift	Device (iOS Version)
Swift 1.1	0.304 seconds 5% STDEV	0.376 seconds 1% STDEV	-	iPhone 6 (8.3)
Swift 1.2	0.281 seconds 3% STDEV	0.303 seconds 1% STDEV	-	iPhone 6 (8.3)
Swift 2.0	0.270 seconds 2% STDEV	0.273 seconds 2% STDEV	-	iPhone 6 (8.3)
Swift 2.1	0.313 seconds 2% STDEV	0.318 seconds 3% STDEV	-	iPhone 6 (9.2)
Swift 2.2 Snapshot	0.259 seconds 3% STDEV	0.261 seconds 2% STDEV	-	iPhone 6 (9.2)

Shuffle 1,000,000 NSString objects in NSMutableArray

Version	Objective-C	Bridgeable Swift	Swift	Device (iOS Version)
Swift 1.1	1.091 seconds 2% STDEV	1.290 seconds 3% STDEV	-	iPhone 6 (8.3)
Swift 1.2	1.129 seconds 3% STDEV	1.238 seconds 2% STDEV	-	iPhone 6 (8.3)
Swift 2.0	1.106 seconds 2% STDEV	1.096 seconds 1% STDEV	-	iPhone 6 (8.3)
Swift 2.1	0.307 seconds 2% STDEV	0.312 seconds 2% STDEV	-	iPhone 6 (9.2)
Swift 2.2 Snapshot	0.258 seconds 4% STDEV	0.265 seconds 6% STDEV	-	iPhone 6 (9.2)

Shuffle 1,000,000 ObjcObject objects in NSMutableArray

Version	Objective-C	Bridgeable Swift	Swift	Device (iOS Version)
Swift 1.1	0.839 seconds 4% STDEV	1.014 seconds 4% STDEV	-	iPhone 6 (8.3)
Swift 1.2	0.799 seconds 3% STDEV	0.867 seconds 1% STDEV	-	iPhone 6 (8.3)
Swift 2.0	0.791 seconds 4% STDEV	0.798 seconds 2% STDEV	-	iPhone 6 (8.3)
Swift 2.1	0.877 seconds 2% STDEV	0.862 seconds 1% STDEV	-	iPhone 6 (9.2)
Swift 2.2 Snapshot	0.775 seconds 4% STDEV	0.780 seconds 4% STDEV	-	iPhone 6 (9.2)

Shuffle 1,000,000 SwiftObject objects in NSMutableArray

Version	Objective-C	Bridgeable Swift	Swift	Device (iOS Version)
Swift 1.1	0.818 seconds 1% STDEV	1.015 seconds 1% STDEV	-	iPhone 6 (8.3)
Swift 1.2	0.854 seconds 2% STDEV	0.898 seconds 2% STDEV	-	iPhone 6 (8.3)
Swift 2.0	0.808 seconds 2% STDEV	0.817 seconds 2% STDEV	-	iPhone 6 (8.3)
Swift 2.1	0.861 seconds 3% STDEV	0.853 seconds 3% STDEV	-	iPhone 6 (9.2)
Swift 2.2 Snapshot	0.769 seconds 4% STDEV	0.779 seconds 6% STDEV	-	iPhone 6 (9.2)

Empty loop 1,000,000 objects with NSMutableArray

Version	Objective-C	Bridgeable Swift	Swift	Device (iOS Version)
Swift 1.1	0.006 seconds 2% STDEV	0.005 seconds 9% STDEV	-	iPhone 6 (8.3)
Swift 1.2	0.004 seconds 3% STDEV	0.005 seconds 10% STDEV	-	iPhone 6 (8.3)
Swift 2.0	0.004 seconds 3% STDEV	0.004 seconds 2% STDEV	-	iPhone 6 (8.3)
Swift 2.1	0.005 seconds 8% STDEV	0.005 seconds 11% STDEV	-	iPhone 6 (9.2)
Swift 2.2 Snapshot	0.006 seconds 36% STDEV	0.005 seconds 2% STDEV	-	iPhone 6 (9.2)

Tests written in Swift

Shuffle 1,000,000 Int objects with Swift implementation taking [AnyObject]

Version	Objective-C	Bridgeable Swift	Swift	Device (iOS Version)
Swift 1.1	0.296 seconds 1% STDEV	-	1.616 seconds 2% STDEV	iPhone 6 (8.3)
Swift 1.2	0.262 seconds 1% STDEV	-	0.523 seconds 1% STDEV	iPhone 6 (8.3)
Swift 2.0	0.271 seconds 2% STDEV	-	0.285 seconds 2% STDEV	iPhone 6 (8.3)
Swift 2.1	0.305 seconds 1% STDEV	-	0.336 seconds 5% STDEV	iPhone 6 (9.2)
Swift 2.2 Snapshot	0.256 seconds 1% STDEV	-	0.284 seconds 7% STDEV	iPhone 6 (9.2)

Shuffle 1,000,000 Int objects with Swift implementation taking [Any]

Version	Objective-C	Bridgeable Swift	Swift	Device (iOS Version)
Swift 1.1	Same as above	-	0.537 seconds 3% STDEV	iPhone 6 (8.3)
Swift 1.2	Same as above	-	0.289 seconds 2% STDEV	iPhone 6 (8.3)
Swift 2.0	Same as above	-	0.303 seconds 2% STDEV	iPhone 6 (8.3)
Swift 2.1	Same as above	-	0.378 seconds 6% STDEV	iPhone 6 (9.2)
Swift 2.2 Snapshot	Same as above	-	0.340 seconds 3% STDEV	iPhone 6 (9.2)

Shuffle 1,000,000 Int objects with Swift implementation taking [Int]

Version	Objective-C	Bridgeable Swift	Swift	Device (iOS Version)
Swift 1.1	Same as above	-	0.181 seconds 2% STDEV	iPhone 6 (8.3)
Swift 1.2	Same as above	-	0.189 seconds 2% STDEV	iPhone 6 (8.3)
Swift 2.0	Same as above	-	0.197 seconds 5% STDEV	iPhone 6 (8.3)
Swift 2.1	Same as above	-	0.240 seconds 2% STDEV	iPhone 6 (9.2)
Swift 2.2 Snapshot	Same as above	-	0.198 seconds 6% STDEV	iPhone 6 (9.2)

Shuffle 1,000,000 Int objects with Swift implementation taking [T]

Version	Objective-C	Bridgeable Swift	Swift	Device (iOS Version)
Swift 1.1	Same as above	-	32.627 seconds 1% STDEV	iPhone 6 (8.3)
Swift 1.2	Same as above	-	2.155 seconds 1% STDEV	iPhone 6 (8.3)
Swift 2.0	Same as above	-	1.478 seconds 2% STDEV	iPhone 6 (8.3)
Swift 2.1	Same as above	-	2.025 seconds 1% STDEV	iPhone 6 (9.2)
Swift 2.2 Snapshot	Same as above	-	2.185 seconds 2% STDEV	iPhone 6 (9.2)

Shuffle 1,000,000 String objects with Swift implementation taking [String]

Version	Objective-C	Bridgeable Swift	Swift	Device (iOS Version)
Swift 1.1	1.137 seconds 2% STDEV	-	0.829 seconds 2% STDEV	iPhone 6 (8.3)
Swift 1.2	1.112 seconds 3% STDEV	-	0.891 seconds 3% STDEV	iPhone 6 (8.3)
Swift 2.0	1.114 seconds 2% STDEV	-	0.925 seconds 1% STDEV	iPhone 6 (8.3)
Swift 2.1	1.253 seconds 3% STDEV	-	1.010 seconds 3% STDEV	iPhone 6 (9.2)
Swift 2.2 Snapshot	1.138 seconds 2% STDEV	-	0.878 seconds 2% STDEV	iPhone 6 (9.2)

Shuffle 1,000,000 ObjcObject objects with Swift implementation taking [ObjcObject]

Version	Objective-C	Bridgeable Swift	Swift	Device (iOS Version)
Swift 1.1	0.816 seconds 3% STDEV	-	2.529 seconds 1% STDEV	iPhone 6 (8.3)
Swift 1.2	0.794 seconds 2% STDEV	-	1.252 seconds 1% STDEV	iPhone 6 (8.3)
Swift 2.0	0.794 seconds 2% STDEV	-	0.820 seconds 2% STDEV	iPhone 6 (8.3)
Swift 2.1	0.827 seconds 4% STDEV	-	0.895 seconds 2% STDEV	iPhone 6 (9.2)
Swift 2.2 Snapshot	0.748 seconds 4% STDEV	-	0.810 seconds 1% STDEV	iPhone 6 (9.2)

Shuffle 1,000,000 SwiftObject objects with Swift implementation taking [SwiftObject]

Version	Objective-C	Bridgeable Swift	Swift	Device (iOS Version)
Swift 1.1	0.826 seconds 2% STDEV	-	2.527 seconds 1% STDEV	iPhone 6 (8.3)
Swift 1.2	0.795 seconds 2% STDEV	-	1.352 seconds 1% STDEV	iPhone 6 (8.3)
Swift 2.0	0.796 seconds 2% STDEV	-	0.830 seconds 3% STDEV	iPhone 6 (8.3)
Swift 2.1	0.835 seconds 4% STDEV	-	0.887 seconds 3% STDEV	iPhone 6 (9.2)
Swift 2.2 Snapshot	0.755 seconds 3% STDEV	-	0.809 seconds 3% STDEV	iPhone 6 (9.2)

Shuffle 1,000,000 SwiftStructObject objects with Swift implementation taking [SwiftStructObject]

Version	Objective-C	Bridgeable Swift	Swift	Device (iOS Version)
Swift 1.1	-	-	0.070 seconds 1% STDEV	iPhone 6 (8.3)
Swift 1.2	-	-	0.065 seconds 3% STDEV	iPhone 6 (8.3)
Swift 2.0	-	-	0.067 seconds 2% STDEV	iPhone 6 (8.3)
Swift 2.1	-	-	0.067 seconds 5% STDEV	iPhone 6 (9.2)
Swift 2.2 Snapshot	-	-	0.069 seconds 17% STDEV	iPhone 6 (9.2)

Empty loop 1,000,000 Int objects in [Int]

Version	Objective-C	Bridgeable Swift	Swift	Device (iOS Version)
Swift 1.1	0.010 seconds 38% STDEV	-	0.003 seconds 49% STDEV	iPhone 6 (8.3)
Swift 1.2	0.005 seconds 10% STDEV	-	0.001 seconds 20% STDEV	iPhone 6 (8.3)
Swift 2.0	0.005 seconds 23% STDEV	-	0.001 seconds 10% STDEV	iPhone 6 (8.3)
Swift 2.1	0.005 seconds 35% STDEV	-	0.001 seconds 9% STDEV	iPhone 6 (9.2)
Swift 2.2 Snapshot	0.005 seconds 24% STDEV	-	0.000 seconds 106% STDEV	iPhone 6 (9.2)