How do I fetch the last element of an array in Swift?

Question

I can do this:

var a = [1,5,7,9,22] a.count               // 5 a[a.count - 1]        // 22 a[a.endIndex - 1]     // 22 

but surely there's a prettier way?

Answer 1

As of beta5 there is now a first and last property

In addition to Array acquiring first and last, the lazy collections also implement first (and last if they can index bidirectionally), as well as isEmpty.

Answer 2

Update: Swift 2.0 now includes first:T? and last:T? properties built-in.

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When you need to you can make the built-in Swift API's prettier by providing your own extensions, e.g:

extension Array {     var last: T {         return self[self.endIndex - 1]     } } 

This lets you now access the last element on any array with:

[1,5,7,9,22].last