Number of occurrences of substring in string in Swift

Question

My main string is \"hello Swift Swift and Swift\" and substring is Swift. I need to get the number of times the substring \"Swift\" occurs in the mentioned string.

T

Answer 1

For the sake of completeness – and because there is a regex tag – this is a solution with Regular Expression

let string = "hello Swift Swift and Swift"
let regex = try! NSRegularExpression(pattern: "swift", options: .caseInsensitive)
let numberOfOccurrences = regex.numberOfMatches(in: string, range: NSRange(string.startIndex..., in: string))

The option .caseInsensitive is optional.