date_build: Building: date

Description Usage Arguments Details Value Examples

View source: R/date.R

Description

date_build() builds a Date from it's individual components.

Usage

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date_build(year, month = 1L, day = 1L, ..., invalid = NULL)

Arguments

year

[integer]

The year. Values [-32767, 32767] are generally allowed.

month

[integer]

The month. Values [1, 12] are allowed.

day

[integer / "last"]

The day of the month. Values [1, 31] are allowed.

If "last", then the last day of the month is returned.

...

These dots are for future extensions and must be empty.

invalid

[character(1) / NULL]

One of the following invalid date resolution strategies:

  • "previous": The previous valid instant in time.

  • "previous-day": The previous valid day in time, keeping the time of day.

  • "next": The next valid instant in time.

  • "next-day": The next valid day in time, keeping the time of day.

  • "overflow": Overflow by the number of days that the input is invalid by. Time of day is dropped.

  • "overflow-day": Overflow by the number of days that the input is invalid by. Time of day is kept.

  • "NA": Replace invalid dates with NA.

  • "error": Error on invalid dates.

Using either "previous" or "next" is generally recommended, as these two strategies maintain the relative ordering between elements of the input.

If NULL, defaults to "error".

If getOption("clock.strict") is TRUE, invalid must be supplied and cannot be NULL. This is a convenient way to make production code robust to invalid dates.

Details

Components are recycled against each other.

Value

A Date.

Examples

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date_build(2019)
date_build(2019, 1:3)

# Generating invalid dates will trigger an error
try(date_build(2019, 1:12, 31))

# You can resolve this with `invalid`
date_build(2019, 1:12, 31, invalid = "previous")

# But this particular case (the last day of the month) is better
# specified as:
date_build(2019, 1:12, "last")

clock documentation built on July 23, 2021, 1:06 a.m.