Sort NSArray with sortedArrayUsingComparator

Question

In Objective-C I can sort an NSArray using this statement:

NSArray *sortedArray = [persons sortedArrayUsingComparator:^NSComparisonResult(Person *p1, Person *p2) {     return [p1.name compare:p2.name]; }]; 

I'm unable to reproduce the same statement with Swift. All I found was using Array.

Answer 1

You can either use Swift's built in sort functions or, since a Swift array is bridged to NSArray you can call sortedArrayUsingComparator from swift directly.

Using Swift's sorted function:

var sortedArray = sorted(persons) {     (obj1, obj2) in      // The downcast to Person is only needed if persons is an NSArray or a Swift Array of AnyObjects     let p1 = obj1 as Person     let p2 = obj2 as Person     return p1.name < p2.name } 

Or, using NSArray's sortedArrayUsingComparator:

var sortedArray = persons.sortedArrayUsingComparator {     (obj1, obj2) -> NSComparisonResult in      let p1 = obj1 as Person     let p2 = obj2 as Person     let result = p1.name.compare(p2.name)     return result }