Expression to join two intervals
Expression to check if a value is included in a given interval
Expression to check if an interval is valid, e.g.
Expression to check if an interval is valid, e.g. start is before end.
Define lower horizon of the interval axis
Define upper horizon of the interval axis
make sure value is between lower- and upperHorizon
make sure value is between lower- and upperHorizon
Trait to describe interval behaviour