Since this question has gained a lot of attention lately, for anyone interested on the subject there are very exiting news: the Writable Files API (it is now called the File System Access API). At this time the proposed new APIs are merely in the design phase, and there is a vivid discussion about the … Read more
I’d recommend NPOI. NPOI is FREE and works exclusively with .XLS files. It has helped me a lot. Detail: you don’t need to have Microsoft Office installed on your machine to work with .XLS files if you use NPOI. Check these blog posts: Creating Excel spreadsheets .XLS and .XLSX in C# NPOI with Excel Table … Read more
Simply by searching in the app bundle for the resource var filePath = NSBundle.mainBundle().URLForResource(“file”, withExtension: “txt”) However you can’t write to it because it is in the app resources directory and you have to create it in the document directory to write to it var documentsDirectory: NSURL? var fileURL: NSURL? documentsDirectory = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask).last! … Read more
Some 2+ years after I asked this question I’d like to explain it the way I’d want it explained back when I was still a complete newb and would be most beneficial to people who want to understand the process. First of all, forget the “11111111” example value, which is not really all that suited … Read more
Update for Swift The recommended pattern for thread-safe access is using dispatch barrier: let queue = DispatchQueue(label: “thread-safe-obj”, attributes: .concurrent) // write queue.async(flags: .barrier) { // perform writes on data } // read var value: ValueType! queue.sync { // perform read and assign value } return value
t refers to the text mode. There is no difference between r and rt or w and wt since text mode is the default. Documented here: Character Meaning ‘r’ open for reading (default) ‘w’ open for writing, truncating the file first ‘x’ open for exclusive creation, failing if the file already exists ‘a’ open for … Read more