Q:

string replace phone number iOS swift

I import a phone-number  from "Contacts" and save in NSString.
this string contains white-space and I try to delete them using the method:
numero = numero.stringByReplacingOccurrencesOfString(" ", withString: "")

this method doesn't work.

func sostituisci( stringa: NSString! ) -> NSString     
{         
var numero: NSString = ""         
NSLog(stringa) 
numero = ((stringa as String).stringByReplacingOccurrencesOfString(" ", withString: "") as NSString) 
NSLog(numero)

return numero
}

the output unchanged

log
2014-11-05 17:54:50.734 HappyRicarica[33438:3119446] (327) 124-3503
2014-11-05 17:54:50.737 HappyRicarica[33438:3119446] (327) 124-3503

A:

I suspect that the space character in your string is not really a space.  Try adding this after NSLog(string) to see what the unicode scalar values are for the characters in your string:
for uni in (stringa as String).unicodeScalars {
    println("\(uni) = \(uni.value)")
}

The expected output for "(327) 124-3503" is:
( = 40
3 = 51
2 = 50
7 = 55
) = 41
  = 32
1 = 49
2 = 50
4 = 52
- = 45
3 = 51
5 = 53
0 = 48
3 = 51

From your comment, your space has value 160 instead of 32.  You could remove that with:
numero = stringa.stringByReplacingOccurrencesOfString(String(Character(UnicodeScalar(160))), withString: "")

