Check for child duplicates
- by ebb
My console app will loop through each User to get their Websites, so that it can take new screenshots of them. However, to prevent taking screenshot of the same website twice I have to check whether there already has been taken screenshot of the website, while looping through another users websites.
My current solution is:
Database:
User
|--> ID: 1
|--> FirstName: Joe
|--> ID: 2
|--> FirstName: Stranger
Websites
|--> ID: 1
|--> UserID: 1
|--> URL: http://site.com
|--> ID: 2
|--> UserID: 2
|--> URL: http://site.com
Console app:
static void RenewWebsiteThumbNails()
{
Console.WriteLine("Starting renewal process...");
using (_repository)
{
var websitesUpdated = new List<string>();
foreach (var user in _repository.GetAll())
{
foreach (var website in user.Websites.Where(website => !websitesUpdated.Contains(website.URL)))
{
_repository.TakeScreenDumpAndSave(website.URL);
websitesUpdated.Add(website.URL);
Console.WriteLine(new string('-', 50));
Console.WriteLine("{0} has successfully been renewed", website.URL);
}
}
}
}
However, it seems wrong to declare a List for such a scenario, just to check whether a specific URL already has been added... any suggestions for an alternative way?
