iOS Swift4 how to check if string is not nil and not empty? [duplicate]

Question

How do I check if an optional string object is neither empty string "" nor nil in Swift4? I end up having to write weird checks like these, because

 //object has instance variable     
 var title: String?

 //invalid comparison - cannot compare optional and non optional
 if object.title?.count > 0
 {

 }

 //valid but ugly
 if object.titleString == nil {
      //has nil title
 }
 if let title = object.title
 {
    if title.count == 0
    {
        //has a "" string
    }
 }

see this may be it helps you stackoverflow.com/questions/29381994/check-string-for-nil-empty — Anbu.Karthik
– Anbu.Karthik, Commented May 31, 2018 at 13:25
there's something to be said for spelling it out in full: if title != nil && !title!.isEmpty — Fattie
– Fattie, Commented Nov 16, 2021 at 22:14

pstued · Accepted Answer · 2018-05-31 13:26:30Z

12

I would go with something like

if let title = object.title, !title.isEmpty {
  // it's not nil nor an empty string
}

answered May 31, 2018 at 13:26

pstued

3811 silver badge9 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

iOS Swift4 how to check if string is not nil and not empty? [duplicate]

1 Answer 1

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Linked

Related