public ValuesMetric(BoolSelectorDelegate <T> filterSelector, ValuesSelectorDelegate <T> selector)
{
_filterSelector = filterSelector ?? throw new ArgumentNullException(nameof(filterSelector));
_selector = selector ?? throw new ArgumentNullException(nameof(selector));
ColumnNames = new string[0];
Values = new object[0];
_done = false;
}
public ValuesMetric(ValuesSelectorDelegate <T> selector)
: this((i) => true, selector)
{
}