对CLLocationDegrees对象进行排序(Sorting Array of CLLocationDegrees Objects)

对CLLocationDegrees对象进行排序(Sorting Array of CLLocationDegrees Objects)

我正在尝试排序2个CLLocationDegrees对象数组，以便我可以确定使用Swift使地图居中的最小和最大纬度和经度。

var latitudes = [CLLocationDegrees]() var longditudes = [CLLocationDegrees]() self.latitudes.append(mylocation.coordinate.latitude) self.longditudes.append(mylocation.coordinate.longitude) latitudes = latitudes.sort({ $0 < $1 }) longditudes = longditudes.sort({ $0 < $1 })

当我去排序数组时，我得到错误：“（）不能转换为类型[（CLLocationDegrees）]”

我不确定我是否理解这一点，CLLocationDegree对象存储为Double值，为什么我不能以这种方式对它们进行排序？

I'm trying to sort 2 arrays of CLLocationDegrees Objects such that I can determine a minimum and maximum latitude and longitude to centre a map with Swift.

var latitudes = [CLLocationDegrees]() var longditudes = [CLLocationDegrees]() self.latitudes.append(mylocation.coordinate.latitude) self.longditudes.append(mylocation.coordinate.longitude) latitudes = latitudes.sort({ $0 < $1 }) longditudes = longditudes.sort({ $0 < $1 })

When I go to sort the arrays I get the error: "() is not convertible to type [(CLLocationDegrees)]"

I'm not sure that I understand this, CLLocationDegree objects are stored as Double values, why can I not sort them in this manner?

最满意答案

把它放进游乐场，看看你想要做的事情的两种方式

import UIKit import CoreLocation var latitudes : [CLLocationDegrees] = [] var longditudes :[CLLocationDegrees] = [] latitudes.append(100.0) // Just using a Double as an example longditudes.append(120.0) latitudes.sort() { $0 < $1 } longditudes.sort({ $0 < $1 })

sort执行排序，因此您无法将其分配给自身。

Put this into a playground to see two ways of doing what you are trying to do

import UIKit import CoreLocation var latitudes : [CLLocationDegrees] = [] var longditudes :[CLLocationDegrees] = [] latitudes.append(100.0) // Just using a Double as an example longditudes.append(120.0) latitudes.sort() { $0 < $1 } longditudes.sort({ $0 < $1 })

sort performs the sort in place so you can't assign it to itself.