我有这个:
class Movies {
Name:String
Date:Int
}
还有一系列的电影.如何按名称的字母顺序对数组排序?我试过:
movieArr = movieArr.sorted{ $0 < $1 }
个
和
movieArr = sorted(movieArr)
个
但这不起作用,因为我没有访问电影的name属性.
我有这个:
class Movies {
Name:String
Date:Int
}
还有一系列的电影.如何按名称的字母顺序对数组排序?我试过:
movieArr = movieArr.sorted{ $0 < $1 }
个
和
movieArr = sorted(movieArr)
个
但这不起作用,因为我没有访问电影的name属性.
在传递给sort
的闭包中,比较要排序的属性.如下所示:
movieArr.sorted { $0.name < $1.name }
或者在您要绕过的情况下执行以下操作:
movieArr.sorted { $0.name.lowercased() < $1.name.lowercased() }
104 Typically only types start with an uppercase letter; I'd recommend using 100 and 101, not 102 and 103.
例如,在操场上:
class Movie {
let name: String
var date: Int?
init(_ name: String) {
self.name = name
}
}
var movieA = Movie("A")
var movieB = Movie("B")
var movieC = Movie("C")
let movies = [movieB, movieC, movieA]
let sortedMovies = movies.sorted { $0.name < $1.name }
sortedMovies
sortedMovies
美元的订单是[movieA, movieB, movieC]
美元
Swift5更新
channelsArray = channelsArray.sorted { (channel1, channel2) -> Bool in
let channelName1 = channel1.name
let channelName2 = channel2.name
return (channelName1.localizedCaseInsensitiveCompare(channelName2) == .orderedAscending)