Value of type 'String' has no member 'substringToIndex'

Question

I'm not sure what I'm missing here, but all I'm trying to do is get a substring from a string. I'm messing around in a playground, and my code is only three lines long lines long, I declare a string, get an index, then try and get a substring from it, and I get this error. This is all I have for my code...

var name = "Stephen"
var index = name.startIndex.advancedBy(3)
var substring = name.substringToIndex(index)

Am I doing this wrong? I don't see any other ways to get a substring from a string.

In an unrelated question, if I want to grab a substring from a string between indices 2 and 5 how would I go about that in Swift 2?

score 14 · Answer 1 · answered Oct 21 '16 at 14:42

14

For anyone who is searching for Swift 3 solution:

var name = "Stephen"
var index = name.index(name.startIndex, offsetBy:3)
var substring = name.substring(to:index)

answered Oct 21 '16 at 14:42

carmine

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score 12 · Accepted Answer · answered Feb 25 '16 at 16:00

12

Since substringToIndex is defined into the Foundation module, you need to add

import Foundation

answered Feb 25 '16 at 16:00

Luca Angeletti

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It's always the simplest things that you miss... I will accept your answer in 6 minutes! Do you know how I would grab a substring that doesn't start the beginning? – Bill L Feb 25 '16 at 16:04
I had the same issue some time ago ;-) – Luca Angeletti Feb 25 '16 at 16:04

score 0 · Answer 3 · edited May 23 '17 at 10:31

0

about the unrelated question..

var name = "Stephen"
var substring = name.substringWithRange(Range<String.Index>(start: name.startIndex.advancedBy(3),end: name.startIndex.advancedBy(5)))

Value of type 'String' has no member 'substringToIndex'

3 Answers3