public IEnumerable <IDuratedItem <T> > Intersecting(Time point) =>
elements_start
.BeforeOrAt(point)
.Select(kvp => kvp.Value)
.Intersect(
elements_end
.After(point)
.Select(kvp => kvp.Value)
);
public IEnumerable <KeyValuePair <Time, V> > BeforeOrAt(Time bar)
{
if (pivot <= bar)
{
foreach (var item in items)
{
yield return(new KeyValuePair <Time, V>(pivot, item));
}
}
if (left != null)
{
if (pivot <= bar)
{
foreach (var item in left.All())
{
yield return(item);
}
}
else
{
foreach (var item in left.BeforeOrAt(bar))
{
yield return(item);
}
}
}
if (right != null)
{
foreach (var item in right.BeforeOrAt(bar))
{
yield return(item);
}
}
}
