import Foundation
let pattern = ##"""
(?x)
\d+ # at least one digit
\. # a period
\s # a space
[^\d]++ # not a digit, 1 or more of them
(?=\d) # until we see a digit ahead
"""##
let regex = try! NSRegularExpression(pattern: pattern)
let testString = #" 1. Which is your primary browser for development 2. Which of the following technologies have you made use of? 2. Which of the following technologies have you made use of? 3. How old "#
let stringRange = NSRange(location: 0, length: testString.utf16.count)
let matches = regex.matches(in: testString, range: stringRange)
var result: [[String]] = []
for match in matches {
var groups: [String] = []
for rangeIndex in 1 ..< match.numberOfRanges {
let nsRange = match.range(at: rangeIndex)
guard !NSEqualRanges(nsRange, NSMakeRange(NSNotFound, 0)) else { continue }
let string = (testString as NSString).substring(with: nsRange)
groups.append(string)
}
if !groups.isEmpty {
result.append(groups)
}
}
print(result)
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Swift 5.2, please visit: https://developer.apple.com/documentation/foundation/nsregularexpression