How to Sort an array in an ascending order swift 2.3

let array=[        [            "msg":"Hi This is Jecky",            "name":"Susheel",            "sender":77,            "timestamp":1464241769520,            "username":"susheel",        ],        [            "msg":"Dubai",            "name":"Jecky",            "sender":78,            "timestamp":1464246547147,            "username":"Jecky",        ],        [            "msg":"How are you ?",            "name":"Susheel",            "sender":77,            "timestamp":1464243480381,            "username":"susheel",        ],        [            "msg":"Aje dekhai nai",            "name":"Jecky",            "sender":78,            "timestamp":1464244974198,            "username":"Jecky",        ],    ]    print("array = \(array)")    let sortedArray=array.sort { (obj1, obj2) -> Bool in        return (obj1["timestamp"] as! Double) < (obj2["timestamp"] as! Double)    }    print("sortedArray = \(sortedArray)")

If your array is mutable you can user sortInPlace

yourArray.sortInPlace{$0.timestamp < $1.timestamp}

and if not, you can create a new array from sort, like suggested by Kristijan (although no need for parentheses on trailing closures):

let newArray = yourArray.sort{$0.timestamp < $1.timestamp}

You can get this functionality using extension:

extension NSArray{ //sorting- ascending  func ascendingArrayWithKeyValue(key:String) -> NSArray{    let ns = NSSortDescriptor.init(key: key, ascending: true)    let aa = NSArray(object: ns)    let arrResult = self.sortedArray(using: aa as! [NSSortDescriptor])    return arrResult as NSArray  }  //sorting - descending  func discendingArrayWithKeyValue(key:String) -> NSArray{    let ns = NSSortDescriptor.init(key: key, ascending: false)    let aa = NSArray(object: ns)    let arrResult = self.sortedArray(using: aa as! [NSSortDescriptor])    return arrResult as NSArray  }}

use like this:

 let array=[      [        "msg":"Hi This is Jecky",        "name":"Susheel",        "sender":77,        "timestamp":1464241769520,        "username":"susheel",        ],      [        "msg":"Dubai",        "name":"Jecky",        "sender":78,        "timestamp":1464246547147,        "username":"Jecky",        ],      [        "msg":"How are you ?",        "name":"Susheel",        "sender":77,        "timestamp":1464243480381,        "username":"susheel",        ],      [        "msg":"Aje dekhai nai",        "name":"Jecky",        "sender":78,        "timestamp":1464244974198,        "username":"Jecky",        ],      ]    let a = NSArray.init(array: array)    let filArray = a.ascendingArrayWithKeyValue(key: "timestamp")    print(filArray)