Represents the components of a time delta.
Formats a TimeDelta as a verbose string showing all non-zero components. Example: delta.toLongString() → "65 days, 3 hours"
delta.toLongString()
"65 days, 3 hours"
Formats a TimeDelta showing only the two most significant components. Example: delta.toShortString() → "2 months, 5 days"
delta.toShortString()
"2 months, 5 days"