Sorting of an array alphabetically in swift

Question

I am new to swift.I am trying one sample app in which I need to implement the sorting of an array in alphabetical order.I getting the json data and I am adding the titles in

Answer 1

Swift 4(working code)

JSON response -> Stored in aryNameList

"DATA": [
{
        email = "iosworker@gmail.com";
        firstname = Harvey
},
{
        email = "poonam@openxcell.com";
        firstname = poonam
},
{
        email = "t@t.com";
        firstname = rahul
},
{
        email = "android.testapps@gmail.com";
        firstname = Chulbulx
},
{
        email = "t@t2.com";
        firstname = rahul
},
{
        email = "jaystevens32@gmail.com";
        firstname = Jay
},
{
        email = "royronald47@gmail.com";
        firstname = Roy
},
{
        email = "regmanjones@hotmail.com";
        firstname = Regan
},
{
        email = "jd@gmail.com";
        firstname = Jaydip
}
]

Code

    self.aryNameList = self.aryNameList.sorted(by: { (Obj1, Obj2) -> Bool in
       let Obj1_Name = Obj1.firstname ?? ""
       let Obj2_Name = Obj2.firstname ?? ""
       return (Obj1_Name.localizedCaseInsensitiveCompare(Obj2_Name) == .orderedAscending)
    })

working every case (for ex: lowerCase, upperCase..)