sample.swift

// Playground - noun: a place where people can play

import Cocoa

var str = "Hello, playground"
println(str)

var foo = 1
var bar = 2
var baz = foo + bar

for i in 1...10 {
    i + 1
}

func f() -> Int {
    return 10
}

var g = f

g()

func f2(a: Int) -> Int -> Int {
    func internal(b: Int) -> Int {
        return a * b
    }
    return internal
}

var g2 = f2(10)
g2(100)

let c = 10

func makeCounter() -> () -> Int {
    var c = 0
    func counter () -> Int {
        return c++
    }
    return counter
}

let counter = makeCounter()
let counter2 = makeCounter()
counter()
counter()
counter()
counter2()
counter2()
counter2()

var name = "furuyama"
var greeting = "Hello \(name)"

let oneMillion = 1_000_000

var num = [1,2,3,4,5]
var num2 = num.map({ (n: Int) -> Int in
    return n * 2
})
var num3 = num.map({ n -> Int in
    return n * 2
})

func f3 (a: Int = 10) -> Int {
    return a * 2
}

f3()
f3(a: 100)