Writing an Int-Array to a text file

Question

I need to write a dictionary to a text file. I couldn't find anything handy. But writing an array is solved only for strings:

let pieces = [ "1", "5", "1", "4" ]
let joined = "\n".join(pieces)

How could I join integers without creating my own loop?

If there is a simple solution for dictionary itself, that would be better! ;-)

Read and write on file is pretty easy http://stackoverflow.com/questions/24097826/read-and-write-data-from-text-file. — Luca Davanzo, Aug 04 '15 at 08:18
Here usefull tip http://stackoverflow.com/questions/25581324/swift-how-can-string-join-work-custom-types — Luca Davanzo, Aug 04 '15 at 08:20
Excellent. Exactly what I searched for. Thank you very much. — Peter71, Aug 04 '15 at 09:59

score 1 · Accepted Answer · answered Aug 04 '15 at 10:58

So you have an array of Int

let numbers = [1,2,3,4,5]

And you want to concatenate the text representations of these numbers without writing a loop right?

You can write this:

let joined = "\n".join( numbers.map { "\($0)" } )

Now joined has this value: "1\n2\n3\n4\n5"

Hope this helps.

1 Answers1