swift array method "starts(with:)" causing value of type "Range<Int>" has no number "starts"

Question

I'm learning functions in swift's array and have encountered the following problem.

I copied the code directly from swift's API so didn't expect to have any problem. Can someone please tell me why is it giving out error message when typed in playground?

Swift 2 or Swift 3?

tktsubota
– tktsubota

2016-07-21 22:30:23 +00:00
Commented Jul 21, 2016 at 22:30 — tktsubota
– tktsubota, Commented Jul 21, 2016 at 22:30
i believe the API i'm looking at is for swift 3

Thor
– Thor

2016-07-21 22:33:34 +00:00
Commented Jul 21, 2016 at 22:33 — Thor
– Thor, Commented Jul 21, 2016 at 22:33
Are you in Xcode 8?

tktsubota
– tktsubota

2016-07-21 22:34:48 +00:00
Commented Jul 21, 2016 at 22:34 — tktsubota
– tktsubota, Commented Jul 21, 2016 at 22:34
You need Xcode 8 for Swift 3.

tktsubota
– tktsubota

2016-07-21 23:06:49 +00:00
Commented Jul 21, 2016 at 23:06 — tktsubota
– tktsubota, Commented Jul 21, 2016 at 23:06

paulvs · Accepted Answer · 2016-07-21 22:39:17Z

1

I believe you're using Swift 2.2 and the syntax you're using is for Swift 3. Try:

print(a.startsWith(b))

answered Jul 21, 2016 at 22:39

paulvs

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paulvs Over a year ago

Best way to figure these out is to start typing a.star and see what Xcode autocomplete offers.

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