swift 3 - search result also with diacritics

Question

In my application I use a search that works well but I need advice. I do not know how to do that when I search for text without diacritics that the result also with diacriti

Answer 1

You can use range(of:, options:) with options for a diacritic insensitive (and optionally case insensitive) search. Example:

let list = ["holesovice", "holešovice"]
let searchTerm = "sovi"

let filtered = list.filter {
    $0.range(of: searchTerm, options: [.diacriticInsensitive, .caseInsensitive]) != nil
}

print(filtered) // ["holesovice", "holešovice"]