从对象数组中删除选定的元素

Question

我有代码：

struct FilesToDownload {
    var fileInternetUrl: String?
    var fileName: String?
    var savedURL: String?
    var productImageUrl: URL?
    var fileSize: Int
}


var filesToDownload = [FilesToDownload]()

let fileToDelete = "img1000.jpg"

如何从数组中删除一个选定的文件（要删除：fileToDelete）？

Answer 1

您可以尝试

filesToDownload = filesToDownload.filter { $0.fileName != fileToDelete  }

Answer 2

获取要删除的对象的索引并将其删除：

var filesToDownload = [FilesToDownload]()

let fileToDelete = "img1000.jpg"
// get the index or nil if the array does not contain a file with the given name
let fileToDeleteIndex = filesToDownload.index { $0.fileName == fileToDelete }
// if there is a file -> delete it
if let fileToDeleteIndex = fileToDeleteIndex {
    filesToDownload.remove(at: fileToDeleteIndex)
}

Answer 3

首先找到目标商品的索引并删除。简单！

if let index = filesToDownload.index(where: {$0.fileName == fileToDelete} ) {
    filesToDownload.remove(at: index)
}