Filter array of strings, including "like" condition

Question

If my main array is ["Hello","Bye","Halo"], and I'm searching for "lo", it will filter the array only to ["Hello", "Halo"].

This is what I've tried:

 let matchingTerms = filter(catalogNames) {         $0.rangeOfString(self.txtField.text!, options: .CaseInsensitiveSearch) !=  nil     } 

It throws

Type of expression is ambiguous without more context 

Any suggestions?

Answer 1

Use contains instead:

let arr = ["Hello","Bye","Halo"] let filtered = arr.filter { $0.contains("lo") } print(filtered) 

Output

["Hello", "Halo"]

Thanks to @user3441734 for pointing out that functionality is of course only available when you import Foundation