true if this duration is non-zero.Duration.opCast
deprecated
TickDuration is Deprecated
Returns a TickDuration with the same number of hnsecs as this Duration. Note that the conventional way to convert between Duration and TickDuration is using to, e.g.: duration.to!TickDuration()
bool opCast(T : bool)() const nothrow @nogcAllow Duration to be used as a boolean.