Khoa Nguyen ndkhoa96
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| import Foundation | |
| // used in map5 | |
| let queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0) | |
| let group = dispatch_group_create() | |
| extension Array { | |
| func map2<U>(transform: Element ->U) -> [U] { | |
| return reduce([]) { | |
| $0 + [transform($1)] |