/// <summary>
/// Creates an empty unary relation, using the supplied <see cref="IEqualityComparer{T}"/>.
/// This is a degenerated case, since it's principally the same as on ordinary hash set.
/// </summary>
/// <typeparam name="T">Type of elements to be stored in the relation</typeparam>
public static ImmutableRelation <T> Create <T>(IEqualityComparer <T> ec)
{
return(ImmutableRelation <T> .Create(new TupleProjector <T>(ec)));
}
/// <summary>
/// Creates an empty unary relation, using the default <see cref="EqualityComparer{T}"/>.
/// This is a degenerated case, since it's principally the same as on ordinary hash set.
/// </summary>
/// <typeparam name="T">Type of elements to be stored in the relation</typeparam>
public static ImmutableRelation <T> Create <T>()
{
return(ImmutableRelation <T> .Create(new TupleProjector <T>(null)));
}
