gistfile1.swift

import Foundation

extension SequenceType {
    func each(@noescape block: (element: Self.Generator.Element) -> Void) {
        for item in self {
            block(element: item)
        }
    }
    
    func eachWithIndex(@noescape block: (Int, Self.Generator.Element) -> Void) {
        for (index, element) in self.enumerate() {
            block(index, element)
        }
    }
}

let arr = ["1 goat", 2, "3"]

arr.each { print($0) }

arr.eachWithIndex { print("index:\($0), value: \($1)") }