/// <summary>
/// Creates an unbounded interval with closed upper bound.
/// </summary>
public Interval <A> UnboundedClosedInterval(A upperBound)
{
return(Interval(upperBound: IntervalBound.Closed(upperBound)));
}
/// <summary>
/// Creates a closed interval with the specified bounds.
/// </summary>
public Interval <A> ClosedInterval(A lowerBound, A upperBound)
{
return(Interval(IntervalBound.Closed(lowerBound), IntervalBound.Closed(upperBound)));
}
/// <summary>
/// Creates an unbounded interval with closed lower bound.
/// </summary>
public Interval <A> ClosedUnboundedInterval(A lowerBound)
{
return(Interval(lowerBound: IntervalBound.Closed(lowerBound)));
}
/// <summary>
/// Creates a new degenerate interval that consists of just one value.
/// </summary>
public Interval <A> SingleValueInterval(A value)
{
var bound = IntervalBound.Closed(value).ToOption();
return(new Interval <A>(bound, bound, isEmpty: false));
}