public List <DateSpan> GetFreeTime(DateSpan i)
{
List <DateSpan> ld = new List <DateSpan> ();
if (IsHitTo(i.Start))
{
ld.Add(new DateSpan()
{
Start = this.Start, End = I.End
});
if (IsHitTo(i.End))
{
ld.Add(new DateSpan()
{
Start = i.Start, End = i.Start
});
}
}
else
{
if (IsHitTo(i.Start))
{
ld.Add(new DateSpan()
{
Start = i.End, End = this.End
});
}
else
{
if (i.Contains(this))
{
return(new List <DateSpan> ());
}
else
{
ld.Add(this);
}
}
}
return(ld);
}
