public static object Calculate <T>(IEnumerable <T> source, Func <T, object> selector)
{
var summator = new SumAggregator <object>(new IdentityAccessor());
foreach (var i in source.Select(selector))
{
summator.Step(i, null);
}
return(summator.Finish());
}
public override void Step(T container, string selector)
{
_counter.Step(container, selector);
_summator.Step(container, selector);
}
public override void Step(T container, string selector)
{
_countAggregator.Step(container, AnonType.IndexToField(1 + AnonType.FieldToIndex(selector)));
_valueAggregator.Step(container, selector);
}