Swift - Sort array of objects with multiple criteria

Question

I have an array of Contact objects:

var contacts:[Contact] = [Contact]()

Contact class:

Class Contact:NSOBjec         


        

Answer 1

Another simple approach for sorting with 2 criteria is shown below.

Check for the first field, in this case it is lastName, if they are not equal sort by lastName, if lastName's are equal, then sort by the second field, in this case firstName.

contacts.sort { $0.lastName == $1.lastName ? $0.firstName < $1.firstName : $0.lastName < $1.lastName  }