/// <summary>
/// Returns a range that contains any value from <paramref name="lower"/> to <paramref name="upper"/>, where each
/// endpoint may be either inclusive (closed) or exclusive (open).
/// </summary>
/// <exception cref="ArgumentException"> if <paramref name="lower"/> is greater than <paramref name="upper"/>
/// </exception>
public static Range <C> Bounded <C>(C lower, BoundType lowerType, C upper, BoundType upperType) where C : IComparable
{
Cut <C> lowerBound = (lowerType == BoundType.OPEN) ? Cut.AboveValue(lower) : Cut.BelowValue(lower);
Cut <C> upperBound = (upperType == BoundType.OPEN) ? Cut.BelowValue(upper) : Cut.AboveValue(upper);
return(new Range <C>(lowerBound, upperBound));
}
/// <summary>
/// Returns a range that contains all values strictly less than <paramref name="endpoint"/>.
/// </summary>
public static Range <C> LessThan <C>(C endpoint) where C : IComparable
{
return(new Range <C>(Cut.BelowAll <C>(), Cut.BelowValue(endpoint)));
}
/// <summary>
/// Returns a range that contains all values greater than or equal to <paramref name="lower"/> and strictly
/// less than <paramref name="upper"/>.
/// </summary>
/// <exception cref="ArgumentException"> if <paramref name="lower"/> is greater than <paramref name="upper"/>
/// </exception>
public static Range <C> ClosedOpen <C>(C lower, C upper) where C : IComparable
{
return(new Range <C>(Cut.BelowValue(lower), Cut.BelowValue(upper)));
}
/// <summary>
/// Returns a range that contains all values greater than or equal to <paramref name="endpoint"/>.
/// </summary>
public static Range <C> AtLeast <C>(C endpoint) where C : IComparable
{
return(new Range <C>(Cut.BelowValue(endpoint), Cut.AboveAll <C>()));
}