public static LocalTime operator -(LocalTime t, TimeSpan span) => t.AddDuration(Duration.FromTimeSpan(span).Negate());
public LocalTime AddDuration(Duration duration) { long ms = duration.TotalMilliseconds % MS_PerDayL; return(new LocalTime((int)((MS_PerDayL + msOfDay + ms) % MS_PerDayL))); }
public static LocalTime operator +(LocalTime t, TimeSpan span) => t.AddDuration(Duration.FromTimeSpan(span));
public LocalDate AddDuration(Duration duration) => FromJavaTicks(ticks + duration.TotalMilliseconds);
public LocalDateTime AddDuration(Duration duration) => new LocalDateTime(ticks + duration.TotalMilliseconds);
public static Duration operator -(Timestamp t1, Timestamp t2) { return(Duration.FromMilliseconds(t1.ticks - t2.ticks)); }
public Timestamp AddDuration(Duration duration) { return(new Timestamp(ticks + duration.TotalMilliseconds)); }