import Foundation
let pattern = #"(at)(?:.(?!at))*(.*)\s([A-Z]{1,2}[0-9][A-Z0-9]? [0-9][ABD-HJLNP-UW-Z]{2})"#
let regex = try! NSRegularExpression(pattern: pattern)
let testString = #"""
The AGM will be held at the Company's registered office at Unity House, Telford Road, Basingstoke, Hampshire, RG21 6YJ on 13 January 2016 at 10.00 a.m.
The Company announces that its 2016 Annual General Meeting will be held on 11 February 2016 at 10.00 a.m. at Hangar 89, London Luton Airport, Luton, Bedfordshire, LU2 9PF.
"""#
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