func sayHello(nickname:String,greet:String) -> String
{
let result = greet + "," + nickname + "!"
return result
}
sayHello("tyf", greet: "hello")
// summary : origin function
func sayYes(username nickname:String,golory greetlist:String) -> String
{
let result = nickname + "," + greetlist
return result
}
sayYes(username: "tyf", golory: "ios")
// summary : out function name
var arr :[Int] = []
arr.insert(1, atIndex: 0)
arr.removeAtIndex(0)
arr
arr = [1,2,3]
arr
arr.insert(6, atIndex: 3)
arr[2] = 9
arr
func oneWorld(planet:String, grade:String = "earth",area:Int) -> (String,String,Int)
{
let result_planet = planet
let result_grade = grade
let result_area = area
return (result_planet,result_grade,result_area)
}
oneWorld("earth", grade: "jsd", area: 3)
oneWorld("moon", area: 1)
// summary default element