getting to decent place now

nirvana-ios/Globals/StringExtension.swift

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+//
+//  StringExtension.swift
+//  nirvana-ios
+//
+//  Created by Arjun Patel on 12/20/21.
+//
+
+import Foundation
+
+extension String {
+    func matchingStrings(regex: String) -> [[String]] {
+        guard let regex = try? NSRegularExpression(pattern: regex, options: []) else { return [] }
+        let nsString = self as NSString
+        let results  = regex.matches(in: self, options: [], range: NSMakeRange(0, nsString.length))
+        return results.map { result in
+            (0..<result.numberOfRanges).map {
+                result.range(at: $0).location != NSNotFound
+                    ? nsString.substring(with: result.range(at: $0))
+                    : ""
+            }
+        }
+    }
+    
+    var digits: String {
+        return components(separatedBy: CharacterSet.decimalDigits.inverted)
+            .joined()
+    }
+}