如何重新运行将在字典中切换变量并再次运行其自身的函数？

Posted 2023-02-24

【中文标题】如何重新运行将在字典中切换变量并再次运行其自身的函数？

【英文标题】：How to Rerun a function that will switch variables in a dictionary and run its self again?

【发布时间】：2016-02-26 17:03:36

【问题描述】：

嘿，我有 2 个简单的字符串和数字字典。我希望能够一次运行该函数能够再次运行它，但这次是 barcelonavsRealMadrid1goals2 而不是原来的。所以该函数基本上为第一个运行它，然后将 var goalCount 更改为第二个字典名称并自动再次运行它。看起来很简单任何帮助。谢谢！ 代码：

var barcelonavsRealMadrid1 = [barcelonavsRealMadrid1goals, barcelonavsRealMadrid1penaltys]

var barcelonavsRealMadrid1goals : [String : Int] = ["barcelonaGoal0":14,"RealMadridGoal1":12,"barcelonaGoal2":29,"RealMadridGoal3":30]

var barcelonavsRealMadrid1goals2 : [String : Int] = ["barcelonaGoal0":14,"RealMadridGoal1":12,"barcelonaGoal2":29,"RealMadridGoal3":30]

func run() 

        var goalCount = barcelonavsRealMadrid1goals.reduce(0, combine: 
            (initial:Int, current:(key:String, value:Int)) -> Int in
            var currentCount = initial
            print("\(current.key)\", \((current.value))", terminator:", ")

            defer 

            
            if current.value <= 30 
                ++currentCount // add 1 to the running total
                return currentCount
            

            return currentCount
           // This is where i want to rerun the function but with the second dictionary now
           goalCount = barcelonavsRealMadrid1(index + 1) 
        )

就像让 barcelonavsRealMadrid1 第一个索引槽运行，然后在 func 完成第一个索引槽时运行第二个，所以基本上改变 var 目标计数，然后重新开始

【问题讨论】：

我还是不明白。你能详细说明一下吗？

【参考方案1】：

您可以将变量作为参数传递给函数并以此为基础。

例如（仅供参考，未经测试）：

var barcelonavsRealMadrid1 = [barcelonavsRealMadrid1goals, barcelonavsRealMadrid1penaltys]
var barcelonavsRealMadrid1goals : [String : Int] = ["barcelonaGoal0":14,"RealMadridGoal1":12,"barcelonaGoal2":29,"RealMadridGoal3":30]
var barcelonavsRealMadrid1goals2 : [String : Int] = ["barcelonaGoal0":14,"RealMadridGoal1":12,"barcelonaGoal2":29,"RealMadridGoal3":30]

override func viewDidLoad() 
    super.viewDidLoad()
    run()


func run(goal:[String : Int]?) 
    if let _goal = goal 
        var goalCount = _goal.reduce(0, combine: 
            (initial:Int, current:(key:String, value:Int)) -> Int in
            var currentCount = initial;
            print("KEY: \(current.key) VALUE: \(current.value)")

            if current.value <= 30 
                ++currentCount // add 1 to the running total
                return currentCount
            

            return currentCount
        )
     else 
        var goalCount = barcelonavsRealMadrid1goals.reduce(0, combine: 
            (initial:Int, current:(key:String, value:Int)) -> Int in
            var currentCount = initial;
            print("KEY: \(current.key) VALUE: \(current.value)")

            if current.value <= 30 
                ++currentCount // add 1 to the running total
                return currentCount
            

            run(barcelonavsRealMadrid1goals2)
            return currentCount
        )