serialization - Saving Arrays in Swift -


i have question saving arrays in apple's new programming language swift. in objective-c saved data nsfilemanager... doesn't work anymore in swift. wanted ask how should save array without using nsuserdefaults isn't suited storing big amount of data. appreciate :]

first (if array not of string type) change string:

var notstringarray = [1, 2, 3, 4] var array: [string] = []  value in notstringarray{     array.append(string(value)) } 

then reduce array 1 string:

var array = ["1", "2", "3", "4", "5"] //ignore line if array wasn't of type string , did step above var stringfromarray = reduce(array, "") { $0.isempty ? $1 : "\($0)\n\($1)" } 

this create string looks this:

"1  2  3  4  5" 

and write , read file add class @ top of file:

class file {     class func open (path: string, utf8: nsstringencoding = nsutf8stringencoding) -> string? {         var error: nserror?   //          return nsfilemanager().fileexistsatpath(path) ? string(contentsoffile: path, encoding: utf8, error: &error)! : nil     }     class func save (path: string, filecontent: string, utf8: nsstringencoding = nsutf8stringencoding) -> bool {         var error: nserror?   //          return filecontent.writetofile(path, atomically: true, encoding: utf8, error: &error)     }  } 

(don't forget import uikit)

to save file:

let didsave = file.save("directoryoffile", content: stringfromarray)  if didsave {     println("file saved")  } else {     println("error saving file")  }  

to back:

var stringfromfile = ""  if let loaddata = file.open("directoryoffile") {     stringfromfile = loaddata } else {     println("error reading file") }   

to put in array:

var newarray: [string] = [] //creates empty string array newarray = stringfromfile.componentsseparatedbystring("\n") 

and there have it


Comments

Popular posts from this blog

python - mat is not a numerical tuple : openCV error -

c# - MSAA finds controls UI Automation doesn't -

wordpress - .htaccess: RewriteRule: bad flag delimiters -