Adds an each closure to Arrays in Swift.

ArrayExtension.swift

#!/usr/bin/env xcrun swift -i

extension Array {
    func each(closure:(T) -> ()) {
        for item:T in self {
            closure(item)
        }
    }
    func eachWithIndex(closure:(Int, T) -> ()) {
        var i:Int = 0
        for item:T in self {
            closure(i, item)
            i++
        }
    }
}
 
println("program arguments:")
Process.arguments.eachWithIndex { (idx, arg) in
    println("\(idx) : \(arg)")
}

println("my little farm:")
let a:[String] = ["Dog", "Cow", "Horse"]
a.each {
    println($0)
}

println("I'm counting to…")
let b:[Int] = [1,2,3]
b.each { (item:Int) in
    println(item)
}