public IEnumerable <Article> GetArticlesSorted(IArticleFilter filter)
{
var values = Items.Keys.OrderBy(n => n).Select(n => Items[n]);
return(filter == null ? values : filter.Filter(values));
}
public static Article[] FilterArticles(this IArticleFilter filter, params Article[] articles)
{
return(filter
.Filter(articles)
.ToArray());
}
public IEnumerable <Article> GetArticles(IArticleFilter filter)
{
return(filter == null ? Items.Values : filter.Filter(Items.Values));
}