enumerateObjectsUsingBlock in Swift

Question

I am trying to iterate through an array using enumerateObjectsUsingBlock to fetch data. How to use enumerateObjectsUsingBlock in Swift ? Please help me with an example.

Answer 1

The new enumerate function returns a tuple with indexer and value so you can get similar functionality to enumerateObjectsUsingBlock.

func myBlock (index: Int, value: Int, inout stop: Bool) -> Void {
    println("Index: \(index) Value: \(value)")
    if index == 3 {
        stop = true
    }
}

var array = [1,2,3,4,5]

for (index, value) in enumerate(array) {
    var stop = false;
    myBlock(index, value, &stop)
    if stop  {
        break;
    }
}

//Output...
//Index: 0 Value: 1
//Index: 1 Value: 2
//Index: 2 Value: 3
//Index: 3 Value: 4

I imagine they haven't exposed enumerateObjectsUsingBlock as you can replicate the functionality with the above code.

EDIT: Anonymous function was crashing my playground so used an inline function. Also added using stop variable for illustrative purposes.