if let name = option{
greeting = “if=====“
}else{
greeting = "else==="
}for i in 0..3{
println("i===\(i)")//只经历0,1,2三次循环
}func sumOf(numbers:Int...) -> Int{
var sum = 0
for number in numbers{
sum += number
}
return sum
}func returnFifteen() -> Int{
var y = 10
func add(){
y+=5
}
add()
return y
}
2014年06月27日
原文地址:http://blog.csdn.net/u011439689/article/details/35994589