Swift 4 How can I get the first 30 of a string

Question

I have just updated to Swift 4 and I am finding it difficult to show the first 30 characters of a string. I have a TableView that gets data via Json and that is populating a label. Now since Substrings can not be used anymore I am having a hard time getting this to work. I am essentially checking if the string returned has 30 or more characters and if it does then I want to show only those 30 characters else show everything since it's under 30 characters .... This is my code

 if streamsModel.Posts[indexPath.row].count >= 30
       {
        // Show 30 characters here
        cell.post.text = streamsModel.Posts[indexPath.row]   
       //.substringFromIndex(cell.post.text.endIndex.advancedBy(-4))

        }
        else
       {
        cell.post.text = streamsModel.Posts[indexPath.row]
        }
        cell.post.tag = indexPath.row

The duplicate works also with *first*: `String(streamsModel.Posts[indexPath.row].prefix(30))` — vadian, Feb 25 '18 at 21:16
If this is not longer a duplicate then you need to explain why it is different — New Alexandria, Feb 26 '18 at 02:59

score 1 · Accepted Answer · answered Feb 25 '18 at 21:16

1

Use prefix:

cell.post.text = String(streamsModel.Posts[indexPath.row].prefix(30))

answered Feb 25 '18 at 21:16

rmaddy

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Swift 4 How can I get the first 30 of a string

1 Answers1