import Foundation
let pattern = ##"""
(?x)
^(?!.*[\s]) # this excludes whitespaces
(?=.*\d) # this matches at least one digit
(?=.*[a-z]{0,}) # this matches 0 or more lowercase letters
(?=.*[A-Z]) # this matches at least one uppercase character
.{8,}$ # ensuring the minimum length is 8 symbols
# ^(?!.*[\s])(?=.*\d)(?=.*[a-z]{0,})(?=.*[A-Z]).{8,}$ the whole RegEx
"""##
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #""#
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