public static IEnumerable <T> Top <T>(IEnumerable <T> source, TopResult topResult)
{
double top = topResult.Amount;
if (topResult.Percent)
{
//TODO: if source is infinite, this will freeze
int size = source.Count();
top = top * size / 100;
top = Math.Round(top);
}
int returned = 0;
foreach (var item in source)
{
if (returned >= top)
{
break;
}
returned++;
yield return(item);
}
}
internal static IEnumerable <T> From <T>(IEnumerable <T> rows, Func <T, bool> predicate, TopResult top)
{
var result = Where(rows, predicate);
if (top != null)
{
result = Top(result, top);
}
return(result);
}