使用FileManager类来获取文件的路径和创建文件。 使用write(to:atomically:encoding:)方法将字符串写入文件。 下面是一个示例代码: 代码语言:txt 复制 func writeStringsToFile(strings: [String], filePath: String) { let content = strings.joined(separator: "\n") if let dir = FileManager.default.urls(fo...
print("Error writing file: \(error)") } In the above code, you first create the full path of the file by appending the filename to the path of the Documents directory. Then, you write the string “Hello, World!” to this file. The write(to:atomically:encoding:) method is a throwin...
importFoundationfuncwriteStringToFile(content:String,fileName:String){letdocumentsDirectory=FileManager.default.urls(for:.documentDirectory,in:.userDomainMask).first!letfileURL=documentsDirectory.appendingPathComponent(fileName)do{trycontent.write(to:fileURL,atomically:true,encoding:.utf8)print("文件写入成功...
func write(toFile path: String, atomically useAuxiliaryFile: Bool, encoding enc: UInt) throws 其中,参数说明如下: path:用来指定写入到文件的路径。 useAuxiliaryFile:用来指定是否先将字符串写入到辅助文档。 enc:用来指定编码格式。 【示例1-100】以下将字符串中的字符写入到File空文件中。 import Foundation...
可以通过writeToFile方法,可以创建文件并将对象写入,对象包括String,NSString,UIImage,NSArray,NSDictionary等。 (1)把String保存到文件 let hfilepath:String = NSHomeDirectory() + "/Documents/hero.txt" let info = "欢迎来到hero11223.com" try! info.write(toFile: hfilepath, atomically: true, encoding...
"") Exception call stack: \(exception.callStackSymbols.joined(separator: "\n")) Date: \(dateString) """ do { try exceptionInfo.write(toFile: filePath, atomically: true, encoding: .utf8) print("Crash log written to: \(filePath)") } catch { print("Failed to write crash log: \...
imageName = NSUUID().uuidString let imagePath = getDocumentsDirectory().appendingPathComponent(imageName) if let jpegData = UIImageJPEGRepresentation(newImage, 80) { jpegData.write(toFile: imagePath, atomically: true) } dismiss(animated: true,...
let urlstring = URL(string: "https://dldir1.qq.com/qqfile/QQforMac/QQ_V6.5.5.dmg")! // 第一步:初始化一个background后台模式的会话配置configuration let configuration = URLSessionConfiguration.background(withIdentifier: "com.Henry.cn") ...
所以如果将这个数据放到上面的图表中,你会发现真正的业务代码在 File Size 轴上的比重真的太微不足道了。 所以这就是拓展性差带来的问题之一! 很明显,我们不可能用这样的方式引入代码,假设你有 M 个源文件且每个文件会引入 N 个头文件,按照刚才的解释,编译它们的时间就会是 M * N,这是非常可怕的!
Write Swift macros WWDC23 iOS, iPadOS, macOS, tvOS, watchOS Discover how you can use Swift macros to make your codebase more expressive and easier to read. Code along as we explore how macros can help you avoid writing repetitive code and find out how to use them in your app. We'...