Add NA_Date_ and 0-length Date helpers #681
Comments
|
This is a good idea but it's so fundamental that should be tried with base R first. I could add NA_date_ and Date to lubridate but then I will have to add NA_POSIXct_ and POSIXct for consistency. I feel that all these belong in R proper. |
|
I decided to add these. We already do is.Date and is.POSIXct. Even if accepted into the core it almost surely won't be treating the |
|
Hey -- sorry if this is obvious. But what is the workaround to not having NA_Date_ and needing to use if_else? The base R ifelse seems to breaks a lot of lubridate features. |
|
@yakyak462 See the original issue: |
|
@vspinu Would it be possible to also add NA_Duration_ (and possibly the equivalent for other timespan classes)? (I am happy to open a new issue for this, if you prefer.) |
|
@djbirke yes that would be useful. PRs more than welkome. |
netbsd-srcmastr
pushed a commit
to NetBSD/pkgsrc
that referenced
this issue
May 30, 2021
Version 1.7.10 ============== ### NEW FEATURES * `fast_strptime()` and `parse_date_time2()` now accept multiple formats and apply them in turn ### BUG FIXES * [#926](tidyverse/lubridate#926) Fix incorrect division of intervals by months involving leap years * Fix incorrect skipping of digits during parsing of the `%z` format Version 1.7.9.2 =============== ### NEW FEATURES * [#914](tidyverse/lubridate#914) New `rollforward()` function * [#928](tidyverse/lubridate#928) On startup lubridate now resets TZDIR to a proper directory when it is set to non-dir values like "internal" or "macOS" (a change introduced in R4.0.2) * [#630](tidyverse/lubridate#630) New parsing functions `ym()` and `my()` ### BUG FIXES * [#930](tidyverse/lubridate#930) `as.period()` on intervals now returns valid Periods with double fields (not integers) Version 1.7.9 ============= ### NEW FEATURES * [#871](tidyverse/lubridate#893) Add `vctrs` support ### BUG FIXES * [#890](tidyverse/lubridate#890) Correctly compute year in `quarter(..., with_year = TRUE)` * [#893](tidyverse/lubridate#893) Fix incorrect parsing of abbreviated months in locales with trailing dot (regression in v1.7.8) * [#886](tidyverse/lubridate#886) Fix `with_tz()` for POSIXlt objects * [#887](tidyverse/lubridate#887) Error on invalid numeric input to `month()` * [#889](tidyverse/lubridate#889) Export new dmonth function Version 1.7.8 ============= ### NEW FEATURES * (breaking) Year and month durations now assume 365.25 days in a year consistently in conversion and constructors. Particularly `dyears(1) == years(1)` is now `TRUE`. * Format and print methods for 0-length objects are more consistent. * New duration constructor `dmonths()` to complement other duration constructors. * * `duration()` constructor now accepts `months` and `years` arguments. * [#629](tidyverse/lubridate#629) Added `format_ISO8601()` methods. * [#672](tidyverse/lubridate#672) Eliminate all partial argument matches * [#674](tidyverse/lubridate#674) `as_date()` now ignores the `tz` argument * [#675](tidyverse/lubridate#675) `force_tz()`, `with_tz()`, `tz<-` convert dates to date-times * [#681](tidyverse/lubridate#681) New constants `NA_Date_` and `NA_POSIXct_` which parallel built-in primitive constants. * [#681](tidyverse/lubridate#681) New constructors `Date()` and `POSIXct()` which parallel built-in primitive constructors. * [#695](tidyverse/lubridate#695) Durations can now be compared with numeric vectors. * [#707](tidyverse/lubridate#707) Constructors return 0-length inputs when called with no arguments * [#713](tidyverse/lubridate#713) (breaking) `as_datetime()` always returns a `POSIXct()` * [#717](tidyverse/lubridate#717) Common generics are now defined in `generics` dependency package. * [#719](tidyverse/lubridate#719) Negative Durations are now displayed with leading `-`. * [#829](tidyverse/lubridate#829) `%within%` throws more meaningful messages when applied on unsupported classes * [#831](tidyverse/lubridate#831) Changing hour, minute or second of Date object now yields POSIXct. * [#869](tidyverse/lubridate#869) Propagate NAs to all internal components of a Period object ### BUG FIXES * [#682](tidyverse/lubridate#682) Fix quarter extraction with small `fiscal_start`s. * [#703](tidyverse/lubridate#703) `leap_year()` works with objects supported by `year()`. * [#778](tidyverse/lubridate#778) `duration()/period()/make_difftime()` work with repeated units * `c.Period` concatenation doesn't fail with empty components. * Honor `exact = TRUE` argument in `parse_date_time2`, which was so far ignored. Version 1.7.4 ============= ### NEW FEATURES * [#658](tidyverse/lubridate#658) `%within%` now accepts a list of intervals, in which case an instant is checked if it occurs within any of the supplied intervals. ### CHANGES * [#661](tidyverse/lubridate#661) Throw error on invalid multi-unit rounding. * [#633](tidyverse/lubridate#633) `%%` on intervals relies on `%m+` arithmetic and doesn't produce NAs when intermediate computations result in non-existent dates. * `tz()` always returns "UTC" when `tzone` attribute cannot be inferred. ### BUG FIXES * [#664](tidyverse/lubridate#664) Fix lookup of period functions in `as.period` * [#649](tidyverse/lubridate#664) Fix system timezone memoization Version 1.7.3 ============= ### BUG FIXES * [#643](tidyverse/lubridate#643), [#640](tidyverse/lubridate#640), [#645](tidyverse/lubridate#645) Fix faulty caching of system timezone.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Sometimes I find the need to explicitly set a date to NA (or specify an empty Date vector).
The former would be
NA_Date_ <- structure(NA_real_, class = "Date")This is especially useful in conjuction with
dplyr::if_elsewich will error out ondplyr::if_else(FALSE, NA_real_, lubridate::today())and any other NA_...The latter would be
Date <- function(length = 0L)structure(rep(NA_real_, length), class = "Date")wich is very useful in allocating an empty data.frame with a date column.
The text was updated successfully, but these errors were encountered: