如何在Swift中将[String]写入文本文件？

func writeStringsToFile(strings: [String], filePath: String) {
    let content = strings.joined(separator: "\n")
    
    if let dir = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first {
        let fileURL = dir.appendingPathComponent(filePath)
        
        do {
            try content.write(to: fileURL, atomically: true, encoding: .utf8)
            print("File saved successfully.")
        } catch {
            print("Error while saving file: \(error)")
        }
    }
}

let strings = ["Hello", "World", "Swift"]
let filePath = "example.txt"

writeStringsToFile(strings: strings, filePath: filePath)