/// <summary>
/// Atomically decrements the value of the specified reference.
/// </summary>
/// <param name="r">The reference.</param>
public static void Decrement(this IRef <int> r)
{
r.Adjust(n => n - 1);
}
/// <summary>
/// Atomically increments the value of the specified reference.
/// </summary>
/// <param name="r">The reference.</param>
public static void Increment(this IRef <int> r)
{
r.Adjust(n => n + 1);
}