Get Specific URLQueryItem from URLComponents

get-specific-urlqueryitem-from-urlcomponents.swift

// https://hashaam.com/2017/09/02/get-specific-urlqueryitem-from-urlcomponents

func queryParam(urlString: String?, param: String) -> String? {
        
    guard let urlString = urlString else { return nil }
    guard let urlComponents = URLComponents(string: urlString) else { return nil }
    guard let queryItems = urlComponents.queryItems else { return nil }
    return queryItems.filter { queryItem in
        return queryItem.name == param
    }.first?.value
    
}