Adds a duration or date fields to a date.
Computes the difference between dates.
Subtracts a duration or date fields from a date.
date->- is a member in the Durations group; call it on the receiver shown before the arrow.
date->+ is a member in the Durations group; call it on the receiver shown before the arrow.
date->businessDaysBetween is a member in the Durations group; call it on the receiver shown before the arrow.
date->daysBetween is a member in the Durations group; call it on the receiver shown before the arrow.
date->hoursBetween is a member in the Durations group; call it on the receiver shown before the arrow.
date->minutesBetween is a member in the Durations group; call it on the receiver shown before the arrow.
date->roll is a member in the Durations group; call it on the receiver shown before the arrow.
date->secondsBetween is a member in the Durations group; call it on the receiver shown before the arrow.
Creates a duration.
Returns duration days.
Returns duration hours.
duration->minute is a member in the Durations group; call it on the receiver shown before the arrow.
duration->month is a member in the Durations group; call it on the receiver shown before the arrow.
duration->second is a member in the Durations group; call it on the receiver shown before the arrow.
duration->week is a member in the Durations group; call it on the receiver shown before the arrow.
duration->year is a member in the Durations group; call it on the receiver shown before the arrow.