Assuming regularly spaced time, the interval_pull() returns a list of time
components as the "interval" class.
Usage
interval_pull(x)
Arguments
x
A vector of index-like class.
Value
An "interval" class (a list) includes "year",
"quarter", "month", "week", "day", "hour", "minute", "second", "millisecond",
"microsecond", "nanosecond", "unit".
Details
Extend tsibble to support custom time indexes by defining S3 generics
index_valid() and interval_pull() for them.