/// <summary>
/// Removes the specified element.
/// </summary>
/// <typeparam name="T">Type of elements stored in the relation</typeparam>
/// <param name="rel">Unary relation</param>
/// <param name="x">Element to remove</param>
/// <returns>Updated relation</returns>
public static ImmutableRelation <T> Remove <T>(this ImmutableRelation <T> rel, T?x)
where T : struct
{
return(rel.Remove(x == null ? ItemMatcher <T> .Any : new ItemMatcher <T>(x.Value)));
}
/// <summary>
/// Removes the specified element.
/// </summary>
/// <typeparam name="T">Type of elements stored in the relation</typeparam>
/// <param name="rel">Unary relation</param>
/// <param name="x">Element to remove</param>
/// <returns>Updated relation</returns>
public static ImmutableRelation <T> Remove <T>(this ImmutableRelation <T> rel, T x)
where T : class
{
return(rel.Remove(x == null ? ItemMatcher <T> .Any : new ItemMatcher <T>(x)));
}
