如何从字典中删除某个CGPoint [英] How can I remove a certain CGPoint from a dictionaries

问题描述

我已经看到了一些循环字典的帖子，但在我看来，它们与我想要实现的不同而且简单。我有以下数组：

  pt1.array = [0：[pt2.point]，
 1：[ pt8.point，pt12.point，pt4.point]，
 2：[pt20.point，pt14.point，pt3.point]，
 3：[pt7.point，pt8.point，pt9。点]] 
 pt2.array = [0：[pt5.point]，
 1：[pt8.point，pt11.point，pt1.point]，
 2：[pt10.point ，pt9.point，pt3.point]，
 3：[pt6.point，pt1.point，pt4.point]] 
 pt3.array = [0：[pt13.point]，
 1：[pt1.point，pt15.point，pt7.point]，
 2：[pt19.point，pt14.point，pt2.point]，
 3：[pt10.point，pt11。 point，pt12.point]] 
 pt4.array = [0：[pt8.point]，
 1：[pt9.point，pt11.point，pt13.point]，
 2： [pt14.point，pt15.point，pt6.point]，
 3：[pt3.point，pt2.point，pt1.point]] 
 pt5.array = [0：[pt18.point] ，
 1：[pt8.point，pt6.point，pt1.point]，
 2：[pt3.point，pt17.p oint，pt4.point]，
 3：[pt16.point，pt15.point，pt14.point]] 
 
 allPoints = [pt1，pt2，pt3，pt4，pt5] 
  

如何迭代去除 pt3.point 是来自所有 Int - [CGPoint] 字典的 allPoints

在pt.array中为pt {
为pt.arrays中的ptArrIndex {
 $ b $为ptArrIndex中的（key，value）{
 //从此处的字典中删除点
} 
 
 
 $ / code $ / pre 
 
 
但是我得到错误：$ b （key：Int，value：[CGPoint]）'（aka'（key：Int，value：Array< CGPoint>）'）的作用是
 $ b 
 不符合协议'序列'
  
在行：
 
 $ b $ p $  for（key，value）in ptArrIndex {
  

编辑

创建每个点的结构如下所示：

$ $ p $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ var点：CGPoint
var arrays：[Int：[CGPoint]]
}

UPDATED QUESTION

基于Rob Napier的建议，我更新了这个问题：

：

  struct位置{
 var point：CGPoint 
 var changedLoc：[Int：[CGPoint]] 
 
  

其中点表示 Location 和 changedLoc 表示所有可能的组 CGPoint CGPoints Location 可以变成。

我有以下地点：$ b​​
$ b

  var （点：initialBallPosition，changedLoc：[0：[CGPoint（x：421.0，y：43.0），CGPoint（x：202.0，y：69.0）]，1：[CGPoint（x：121.0，y：198.0） ]]）
 var location2 = Location（point：initialBallPosition，changedLoc：[CGPoint（x：421.0，y：43.0），CGPoint（x：123.0，y：254.0）]，1：[CGPoint x：90.0，y：104.0）]]）
 
 var allLocations = [location1，location2] 
  

从 allLocations 如何删除点 CGPoint（x：421.0，y：43.0）它位于 location1 和 location2 changedLoc 解析方法

func locationsRemoving（changedLoc removePoint：CGPoint，from locations：[Location]） - > location.changedLoc {$ b $ return location.map {location in
var changedLoc：[Int：[CGPoint]] = [：]
for（key，values） $ b $ changedLoc [key] = values.filter {$ 0！= removePoint}
}
return位置（point：location.point，changedLoc：changedLoc）
}
}
$ b $ let removePoint = CGPoint（x：421.0，y：43.0）
print（allLocations）
print（locationsRemoving（changedLoc：removePoint，from：allLocations））




I have seen a number of posts on looping through a dictionary but they are a different and simpler than what I want to achieve here, in my opinion. I have the following arrays:

pt1.array = [0:[pt2.point], 
             1:[pt8.point, pt12.point, pt4.point],  
             2:[pt20.point, pt14.point, pt3.point], 
             3:[pt7.point, pt8.point, pt9.point]]
pt2.array = [0:[pt5.point], 
             1:[pt8.point, pt11.point, pt1.point], 
             2:[pt10.point, pt9.point, pt3.point], 
             3:[pt6.point, pt1.point, pt4.point]]
pt3.array = [0:[pt13.point], 
             1:[pt1.point, pt15.point, pt7.point], 
             2:[pt19.point, pt14.point, pt2.point], 
             3:[pt10.point, pt11.point, pt12.point]]
pt4.array = [0:[pt8.point], 
             1:[pt9.point, pt11.point, pt13.point],
             2:[pt14.point, pt15.point, pt6.point], 
             3:[pt3.point, pt2.point, pt1.point]]
pt5.array = [0:[pt18.point], 
             1:[pt8.point, pt6.point, pt1.point], 
             2:[pt3.point, pt17.point, pt4.point], 
             3:[pt16.point, pt15.point, pt14.point]]

allPoints = [pt1, pt2, pt3, pt4, pt5]

How can I iterate to remove pt3.point which is a CGPoint from all the Int-[CGPoint] dictionaries in the allPoints array?

I tried the following:

for pt in allPoints {
    for ptArrIndex in pt.arrays    {

        for (key, value) in ptArrIndex   {
            //remove point from dict here
        }
    }
}

but I got the error:

Type '(key: Int, value:[CGPoint])' (aka'(key: Int, value: Array<CGPoint>)') does not conform to protocol 'Sequence'

at the line:

for (key, value) in ptArrIndex   {

EDIT

The struct that creates each of the points is below:

struct Point {
    var point: CGPoint
    var arrays: [Int: [CGPoint]]
}

UPDATED QUESTION

Based on Rob Napier’s suggestion I’ve updated the question:

I have a struct below:

struct Location {
    var point: CGPoint
    var changedLoc: [Int: [CGPoint]]
}

where point represents a CGPoint for Location and changedLoc represents all the possible groups of CGPoints Location can change to. I calculate this randomly.

I have the following Locations

var location1 = Location(point: initialBallPosition, changedLoc: [0: [CGPoint(x: 421.0, y: 43.0), CGPoint(x: 202.0, y: 69.0)], 1: [CGPoint(x: 121.0, y: 198.0)]])
var location2 = Location(point: initialBallPosition, changedLoc: [0: [CGPoint(x: 421.0, y: 43.0), CGPoint(x: 123.0, y: 254.0)], 1: [CGPoint(x: 90.0, y: 104.0)]])

var allLocations = [location1, location2]

From allLocations how can I remove the point CGPoint(x: 421.0, y: 43.0) which is in both location1 and location2 changedLoc?

解决方案

func locationsRemoving(changedLoc removePoint: CGPoint, from locations: [Location]) -> [Location] {
    return locations.map { location in
        var changedLoc: [Int: [CGPoint]] = [:]
        for (key, values) in location.changedLoc {
            changedLoc[key] = values.filter{ $0 != removePoint }
        }
        return Location(point: location.point, changedLoc: changedLoc)
    }
}

let removePoint = CGPoint(x: 421.0, y: 43.0)
print(allLocations)
print(locationsRemoving(changedLoc: removePoint, from: allLocations))

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