private void AddUser(User user, IEnumerable <User> follows)
{
CreateOrGetUserFeed(user);
foreach (var follow in follows)
{
UserFeed userFeed = CreateOrGetUserFeed(follow);
userFeed.AddFollower(user);
}
}
private void AddTweet(Tweet tweet)
{
if (tweet == null)
{
throw new ArgumentNullException("tweet");
}
UserFeed userFeed = CreateOrGetUserFeed(tweet.Creator);
userFeed.AddTweet(tweet);
foreach (var follower in userFeed.FollowedBy)
{
UserFeed followerFeed = CreateOrGetUserFeed(follower);
followerFeed.AddTweet(tweet);
}
}