How do I check if a String includes a specific Character?

Question

How do I check if a String includes a specific Character?

For example:

if !emailString.hasCharacter("@") {
    println("Email must contain at sign.")
}

Note, not a duplicate of [this question](http://stackoverflow.com/q/25957594/3925941) since that is checking if a string contains another string, not a character. — Airspeed Velocity, Jun 23 '15 at 15:51

score 4 · Accepted Answer · edited Jun 25 '15 at 11:52

4

let s = "hello"
if (find(s, "x") != nil) {
    println("Found X")
}
if (find(s, "l") != nil) {
    println("Found L")
}

edited Jun 25 '15 at 11:52

pteofil

answered Jun 23 '15 at 14:35

2

Note for anyone upgrading to Swift 2, this would now be `if s.characters.indexOf("x") != nil { }` (as `find` was renamed to `indexOf` and is now a protocol extension on `CollectionType`, while `String` no longer is and instead has a `characters` collection property) – Airspeed Velocity Jun 23 '15 at 15:46
Now in Swift 4 it is: s.index(of: "x") != nil – CodenameDuchess Dec 31 '17 at 22:06

score 0 · Answer 2 · answered Jun 23 '15 at 14:32

0

Here you go:

if emailString.rangeOfString("@") != nil{
    println("@ exists")
}

answered Jun 23 '15 at 14:32

Daniel

saurabh · Answer 3 · 2016-12-24T07:44:49.810

0

You can use this

if emailString.rangeOfString("@") == nil {
        println("Email must contain at sign.")
}

edited Dec 24 '16 at 07:44

answered Jun 23 '15 at 14:32

saurabh

3 Answers3