new_gist_file_0

func write(url: URL, text: String) -> Bool {
    guard let stream = OutputStream(url: url, append: true) else {
        return false
    }
    stream.open()
    
    defer {
        stream.close()
    }
    
    guard let data = text.data(using: .utf8) else { return false }
    
    let result = data.withUnsafeBytes {
        stream.write($0, maxLength: data.count)
    }
    return (result > 0)
}