Helpers #

A set of helpers that extends various classes.

extension on DateTime class #

The following additional functionality are provided in this extension:

• belongsTo(). Returns true if this date belongs to a date-time range.
• isAfterOrAtSameMomentAs(). Returns true if this date is after or at same moment as other.
• isBeforeOrAtSameMomentAs(). Returns true if this date is before or at same moment as other.
• isBetween(). Returns true if this date is between start and end (start < this < end).
• isBetweenOrAtSameMomentAs(). Returns true if this date is between start and end or at same moment as start or as end (start ⩽ this ⩽ end).

extension on DateTimeRange class #

The following additional functionality are provided in this extension:

• belongsTo(). Returns true if this date-time range belongs to another one, that is, it’s completely included in the another.
• overlapWith(). Returns true if this date-time range overlaps, in part or completely, with another one.

extension on List<DateTimeRange> #

The following additional functionality are provided in this extension:

• duration. Returns the sum of all date-time ranges by counting overlapping ranges once. It uses the minimize() method in order to eliminate duplicate ranges where there are overlaps.
• minimize(). Returns a list of date-time ranges that cover the totality of the period of the sum of the ranges of this list, but without repeating any overlaps.