外部引数名を使って関数を定義する

gistfile1.swift

//外部引数名を定義
func convertSeconds(hour h:Int , minutes m:Int) -> Int{
    return 60 * (60 * h + m )
}
//外部引数名と引数名が同じ場合
func convertSeconds2(#hour:Int , #minutes:Int) -> Int{
    return 60 * (60 * hour + minutes )
}

//
convertSeconds(hour: 3, minutes: 25)    //12,300
convertSeconds2(hour: 3, minutes: 25)    //12,300