McarePlus_iPhone/MCPlus/SwiftExtension/ExtensionArray.swift

import Foundation

extension Array {
    
    func shuffled() -> [Element] {
        var results = [Element]()
        var indexes = (0 ..< count).map { $0 }
        while indexes.count > 0 {
            let indexOfIndexes = Int(arc4random_uniform(UInt32(indexes.count)))
            let index = indexes[indexOfIndexes]
            results.append(self[index])
            indexes.remove(at: indexOfIndexes)
        }
        return results
    }
    
}

extension Array where Element == UInt8 {
    var data : Data{
        return Data(bytes:(self))
    }
}

extension Array{
    func json() throws -> Data {
        return try JSONSerialization.data(withJSONObject: self, options: .prettyPrinted)
    }
}