Swift write to file

writeToFile

import Foundation

let dir = "~/Desktop"
let file = "test.txt"
let path = dir.stringByExpandingTildeInPath
let filePath:NSString = path.stringByAppendingPathComponent(file)

var text: NSString = "random text with no meaning"
var textData: NSData = text.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)
var f: CMutablePointer = fopen(filePath.UTF8String, "w".UTF8String)
let success = fwrite(textData.bytes, UInt(1), UInt(textData.length), f)
fsync(fileno(f))
fclose(f)
println("success: \(success)")